$480+ Cheap flights from London (LON) to Dulles Intl (IAD)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/21. Fares are subject to change and may not be available on all flights or dates of travel.
LON — IAD
Oct 12 — Oct 191
Round-trip
1 adult, Economy
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Find cheap flights from London to Dulles Intl with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from London to Washington, D.C. Dulles Intl are usually found in September or March, booked 84 days in advance, depart on a Wednesday or Thursday and return on a Wednesday
Cheap flight deals from London to Dulles Intl
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Cheapest flights from London to Dulles IntlExplore the most affordable flight options available from London to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 12, 2026.
Explore the most affordable flight options available from London to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 12, 2026.
This United Airlines deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/28:40 am -
1 stop13h 05m
Mon 10/56:35 pm -
Nonstop7h 20m
Deal found 9/12![United Airlines logo]()
$543
This Trip.com deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/24:00 pm -
Nonstop8h 25m
Mon 10/510:05 pm -
Nonstop7h 35m
Deal found 9/12![Virgin Atlantic logo]()
$545
This Delta deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/189:55 am -
1 stop10h 40m
Thu 9/2412:25 pm -
1 stop12h 55m
Deal found 9/10![Delta logo]()
$564
This Gotogate deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/310:25 am -
1 stop14h 10m
Tue 10/69:45 pm -
1 stop13h 15m
Deal found 9/11![Virgin Atlantic logo]()
$564
This Expedia deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/214:25 pm -
Nonstop8h 30m
Tue 12/16:05 pm -
Nonstop7h 10m
Deal found 9/10![British Airways logo]()
$565
This Flightnetwork deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/149:25 am -
1 stop12h 20m
Thu 11/58:10 pm -
1 stop16h 40m
Deal found 9/11![SWISS logo]()
$565
This BYOjet deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BYOjet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:45 pm -
2 stops26h 25m
Wed 10/216:05 am -
1 stop20h 05m
Deal found 9/9![Virgin Atlantic logo]()
$566
This Booking.com deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1910:25 am -
1 stop14h 10m
Sat 10/36:15 pm -
1 stop10h 05m
Deal found 9/12![Virgin Atlantic logo]()
$566
This Booking.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/184:00 pm -
Nonstop8h 25m
Sat 10/310:05 pm -
Nonstop7h 35m
Deal found 9/11![Virgin Atlantic logo]()
$567
This TravelUp deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/139:15 am -
1 stop11h 50m
Sun 10/188:20 pm -
1 stop17h 20m
Deal found 9/12![Multiple Airlines logo]()
$567
This Delta deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/198:40 am -
1 stop11h 55m
Mon 9/216:26 pm -
1 stop10h 54m
Deal found 9/10![Delta logo]()
$568
This Mytrip deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/216:00 am -
2 stops17h 30m
Tue 12/17:40 pm -
2 stops20h 15m
Deal found 9/10![Multiple Airlines logo]()
$568
Best flights from London to Dulles IntlDiscover carefully curated flight deals from London to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 12, 2026.
Discover carefully curated flight deals from London to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 12, 2026.
This Delta deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/306:15 am -
1 stop14h 50m
Sun 10/412:25 pm -
1 stop15h 25m
Deal found 9/9![Delta logo]()
$570
This KLM deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/103:50 pm -
Nonstop8h 25m
Sat 1/306:55 pm -
Nonstop7h 25m
Deal found 9/7![KLM logo]()
$580
This Virgin Atlantic deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/132:00 pm -
Nonstop8h 40m
Mon 11/2311:25 am -
1 stop14h 40m
Deal found 9/8![Virgin Atlantic logo]()
$581
This United Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/34:40 pm -
Nonstop8h 40m
Wed 10/78:20 pm -
1 stop15h 05m
Deal found 9/11![United Airlines logo]()
$581
This British Airways deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/24:25 pm -
Nonstop8h 30m
Sun 12/66:05 pm -
Nonstop7h 10m
Deal found 9/8![British Airways logo]()
$605
This TAP AIR PORTUGAL deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1810:40 am -
1 stop14h 50m
Wed 12/210:30 pm -
1 stop11h 35m
Deal found 9/11![TAP AIR PORTUGAL logo]()
$621
This Mytrip deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/309:00 am -
2 stops35h 55m
Tue 11/36:40 pm -
2 stops20h 20m
Deal found 9/10![Multiple Airlines logo]()
$638
This SWISS deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/267:05 pm -
1 stop24h 25m
Mon 11/95:25 pm -
1 stop14h 25m
Deal found 9/8![SWISS logo]()
$650
This Lufthansa deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/164:20 pm -
Nonstop8h 55m
Mon 11/306:20 pm -
Nonstop7h 20m
Deal found 9/8![Austrian Airlines logo]()
$668
This Turkish Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/245:20 pm -
1 stop31h 05m
Wed 12/21:30 pm -
1 stop21h 50m
Deal found 9/8![Turkish Airlines logo]()
$928
This Delta deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/66:15 am -
1 stop14h 50m
Tue 10/2012:30 pm -
1 stop12h 50m
Deal found 9/10![Delta logo]()
$571
This Virgin Atlantic deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/241:20 pm -
Nonstop8h 40m
Wed 12/26:55 pm -
Nonstop7h 25m
Deal found 9/8![Virgin Atlantic logo]()
$581
This United Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/112:05 pm -
Nonstop8h 35m
Sun 11/2210:15 pm -
Nonstop7h 35m
Deal found 9/11![United Airlines logo]()
$581
This KLM deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1810:00 am -
1 stop10h 55m
Mon 1/186:15 pm -
1 stop10h 15m
Deal found 9/7![KLM logo]()
$602
This Virgin Atlantic deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/610:00 am -
1 stop11h 30m
Mon 11/163:00 pm -
2 stops19h 45m
Deal found 9/11![Virgin Atlantic logo]()
$584
This Delta deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1510:25 am -
1 stop14h 10m
Sun 10/186:15 pm -
1 stop10h 10m
Deal found 9/11![Delta logo]()
$584
This KLM deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2010:00 am -
1 stop10h 35m
Tue 10/276:45 pm -
1 stop10h 05m
Deal found 9/7![KLM logo]()
$602
This United Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/39:00 am -
1 stop13h 00m
Mon 11/1610:15 pm -
Nonstop7h 35m
Deal found 9/11![United Airlines logo]()
$629
This Virgin Atlantic deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2910:00 am -
1 stop11h 30m
Wed 11/116:20 pm -
2 stops16h 25m
Deal found 9/11![Virgin Atlantic logo]()
$584
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/279:00 am -
1 stop11h 45m
Sun 10/48:55 pm -
1 stop11h 30m
Deal found 9/8![Multiple Airlines logo]()
$709
This TAP AIR PORTUGAL deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/29:35 am -
2 stops34h 40m
Sun 12/610:30 pm -
2 stops17h 05m
Deal found 9/8![TAP AIR PORTUGAL logo]()
$712
This SWISS deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/27:05 pm -
1 stop25h 25m
Thu 11/195:25 pm -
1 stop14h 25m
Deal found 9/11![SWISS logo]()
$717
This KLM deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/210:00 am -
1 stop10h 35m
Sun 10/45:30 pm -
1 stop9h 25m
Deal found 9/9![KLM logo]()
$603
This Virgin Atlantic deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3010:00 am -
1 stop14h 20m
Tue 11/312:20 pm -
2 stops22h 25m
Deal found 9/10![Virgin Atlantic logo]()
$585
This United Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2611:05 am -
1 stop32h 25m
Sun 1/310:09 pm -
1 stop29h 21m
Deal found 9/11![United Airlines logo]()
$644
This Virgin Atlantic deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1011:20 am -
1 stop11h 13m
Sat 1/306:30 pm -
1 stop11h 00m
Deal found 9/7![Virgin Atlantic logo]()
$586
This Connections by easyJet deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Connections by easyJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/227:00 am -
1 stop16h 30m
Sun 12/277:40 pm -
1 stop21h 50m
Deal found 9/8![Multiple Airlines logo]()
$795
This Turkish Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1810:55 am -
1 stop37h 30m
Wed 12/29:20 pm -
1 stop31h 35m
Deal found 9/7![Turkish Airlines logo]()
$929
This Virgin Atlantic deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/310:00 am -
2 stops18h 16m
Mon 11/163:00 pm -
2 stops19h 45m
Deal found 9/11![Virgin Atlantic logo]()
$589
This British Airways deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/217:45 am -
1 stop13h 00m
Sun 11/298:50 pm -
1 stop10h 50m
Deal found 9/10![British Airways logo]()
$951
Last-minute flights from London to Dulles IntlDiscover last-minute flight deals from London to Dulles Intl. Data last updated September 12, 2026 and is based on user searches.
Discover last-minute flight deals from London to Dulles Intl. Data last updated September 12, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/186:30 am -
1 stop14h 05m
Mon 9/2111:10 am -
1 stop15h 00m
Deal found 9/10![Delta logo]()
$564
This Booking.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/184:00 pm -
Nonstop8h 25m
Sat 10/310:05 pm -
Nonstop7h 35m
Deal found 9/11![Virgin Atlantic logo]()
$567
This Orbitz deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/199:30 am -
2 stops16h 38m
Sat 10/34:02 pm -
1 stop11h 28m
Deal found 9/12![Multiple Airlines logo]()
$565
This Booking.com deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1910:25 am -
1 stop14h 10m
Sat 10/36:15 pm -
1 stop10h 05m
Deal found 9/12![Virgin Atlantic logo]()
$566
This Delta deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/198:40 am -
1 stop11h 55m
Mon 9/216:26 pm -
1 stop10h 54m
Deal found 9/10![Delta logo]()
$568
This United Airlines deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/28:40 am -
1 stop13h 05m
Mon 10/56:35 pm -
Nonstop7h 20m
Deal found 9/12![United Airlines logo]()
$543
This Trip.com deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/24:00 pm -
Nonstop8h 25m
Mon 10/510:05 pm -
Nonstop7h 35m
Deal found 9/12![Virgin Atlantic logo]()
$545
This TravelUp deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/29:15 am -
1 stop11h 50m
Sun 10/48:20 pm -
1 stop17h 20m
Deal found 9/11![Multiple Airlines logo]()
$568
This Gotogate deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/310:25 am -
1 stop14h 10m
Tue 10/69:45 pm -
1 stop13h 15m
Deal found 9/11![Virgin Atlantic logo]()
$564
This BYOjet deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BYOjet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:45 pm -
2 stops26h 25m
Wed 10/216:05 am -
1 stop20h 05m
Deal found 9/9![Virgin Atlantic logo]()
$566
This TravelUp deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/139:15 am -
1 stop11h 50m
Sun 10/188:20 pm -
1 stop17h 20m
Deal found 9/12![Multiple Airlines logo]()
$567
This Flightnetwork deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/149:25 am -
1 stop12h 20m
Thu 11/58:10 pm -
1 stop16h 40m
Deal found 9/11![SWISS logo]()
$565
One-way flights from London to Dulles IntlSearch for one-way flight options from London to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 12, 2026.
Search for one-way flight options from London to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 12, 2026.
This Iberia deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/214:25 pm -
Nonstop8h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Iberia logo]()
$480
This Trip.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/69:45 pm -
2 stops22h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Multiple Airlines logo]()
$480
This Orbitz deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/104:25 pm -
Nonstop8h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![British Airways logo]()
$481
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/228:00 am -
2 stops36h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$481
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2710:10 am -
1 stop28h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$481
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/107:00 am -
3 stops36h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$481
This Kiwi.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/1112:15 pm -
1 stop33h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Multiple Airlines logo]()
$481
This Mytrip deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/288:35 pm -
1 stop26h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Icelandair logo]()
$482
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2212:15 pm -
3 stops54h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$482
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/252:00 pm -
3 stops52h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$482
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/78:50 pm -
3 stops24h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$483
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/215:15 pm -
3 stops32h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Multiple Airlines logo]()
$483
Find flight deals from London to Dulles Intl
Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $543 (United Airlines) |
One-way from | $480 (Iberia) |
Popular in | May |
Cheapest in | September |
Average price | $640 |
Good round-trip deal | $593 or less |
Good one-way deal | $557 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from London to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 12, 2026.
Use the filters below to find and compare flights from London to Washington, D.C. Dulles Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
LondonWashington, D.C.
SEN London Southend - IAD Washington, D.C. Dulles Intl
SENIAD
London Southend
Thu 1/21
5:20 pm-8:35 pm
2 stops32h 15m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$481
LondonWashington, D.C.
SEN London Southend - IAD Washington, D.C. Dulles Intl
SENIAD
London Southend
Tue 10/6
7:00 am-3:45 pm
3 stops37h 45m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$483
LondonWashington, D.C.
SEN London Southend - IAD Washington, D.C. Dulles Intl
SENIAD
London Southend
Thu 10/29
6:35 am-5:20 pm
2 stops38h 45m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$483
LondonWashington, D.C.
STN London Stansted - IAD Washington, D.C. Dulles Intl
STNIAD
London Stansted
Wed 10/21
6:00 am-6:20 am
3 stops53h 20m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$484
LondonWashington, D.C.
LCY London City - IAD Washington, D.C. Dulles Intl
LCYIAD
London City
Thu 12/10
7:40 am-4:20 pm
1 stop13h 40m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$488
LondonWashington, D.C.
LHR London Heathrow - IAD Washington, D.C. Dulles Intl
LHRIAD
London Heathrow
Sun 12/6
4:25 pm-7:55 pm
Nonstop8h 30m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$496
Quickest round-trip
LondonWashington, D.C.
LHR London Heathrow - IAD Washington, D.C. Dulles Intl
LHRIAD
London Heathrow
Fri 12/11
12:15 pm-3:40 pm
Nonstop8h 25m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$497
LondonWashington, D.C.
SEN London Southend - IAD Washington, D.C. Dulles Intl
SENIAD
London Southend
Sat 1/23
5:00 pm-7:05 pm
2 stops31h 05m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$499
LondonWashington, D.C.
LHR London Heathrow - IAD Washington, D.C. Dulles Intl
LHRIAD
London Heathrow
Mon 12/21
4:25 pm-7:55 pm
Nonstop8h 30m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$500
LondonWashington, D.C.
SEN London Southend - IAD Washington, D.C. Dulles Intl
SENIAD
London Southend
Mon 11/23
7:20 am-7:20 pm
2 stops41h 00m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$500
Showing 1-10 of 60 resultsSorted by cheapest first
Compare providers for flights from London to Dulles Intl
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from London to Dulles Intl in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*1 star |
- Most accurate provider: When it comes to deals on London-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on London-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from London to Dulles Intl
Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from London with our price prediction graph.
LON-IAD
LHR-IAD
LGW-IAD
LCY-IAD
SEN-IAD
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from London to Washington, D.C. Dulles Intl Airport
LON-IAD
LHR-IAD
LGW-IAD
LCY-IAD
SEN-IAD
What is the cheapest month to book a flight from London to Washington, D.C. Dulles Intl Airport?
Currently, February is the cheapest month in which you can book a flight from London to Washington, D.C. Dulles Intl Airport (average of $649). Flying from London to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $776). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from LON to IAD?
Find hourly flight availability from London to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 12, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London to Washington, D.C. Dulles Intl Airport as you normally would.
Weekly flight availability from London to Washington, D.C. Dulles Intl Airport
Explore weekly flight availability from London to Dulles Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 12, 2026.
The most flights from LON to IAD are scheduled on a Friday (29 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (22 on average).
How much does it cost to fly round-trip from London to Washington, D.C. Dulles Intl Airport?
Airfare is below average for this route at the moment.
London to Washington, D.C. Dulles Intl Airport flights typically cost between $547 and $741 in October.The cheapest round-trip price found within the last 5 days was $543 on United Airlines (Oct 2-Oct 5).
What’s the top layover airport for flights from London to Washington, D.C. Dulles Intl Airport?
Share of 1-stop round-trip flights from London to Washington, D.C. Dulles Intl Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.
Dublin (DUB) – chosen by Cheapflights users on 50% of 1-stop itineraries from London to Washington, D.C. Dulles Intl Airport on Cheapflights.
What’s the cheapest layover airport for flights from London to Washington, D.C. Dulles Intl Airport?
Average round-trip fare for 1-stop flights from London to Washington, D.C. Dulles Intl Airport, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Reykjavik (KEF) is the most affordable 1-stop option, with an average round-trip price of $587.
What’s the fastest layover option from London to Washington, D.C. Dulles Intl Airport?
Shortest average travel time for 1-stop one-way flights from London to Washington, D.C. Dulles Intl Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Reykjavik (KEF) have the shortest average one-way travel time for 1-stop routes: 11h 30m.
Which airport typically offers the quickest layover for flights from London to Washington, D.C. Dulles Intl Airport?
Average layover duration for 1-stop one-way flights from London to Washington, D.C. Dulles Intl Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Reykjavik (KEF) offer the fastest connection on this route, with an average layover time of 1h 33m.
How often are flights from London to Washington, D.C. delayed?
About 16% of weekly flights between London and Washington, D.C. have experienced delays in the past year, with the average delay time being 141 minutes.
What is the most punctual flight time for London to Washington, D.C. flights?
Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Monday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on London to Washington, D.C. flights?
Over the last year, United Airlines have had the lowest number of delays on this route, with just 10% of flights being delayed.
How far ahead should I book a flight from London to Washington, D.C. Dulles Intl Airport?
The price you pay for your flight from London to Washington, D.C. Dulles Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 81 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
The best insider tips for London to Washington, D.C. Dulles Intl Airport flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your London to Washington, D.C. Dulles Intl Airport trip
Our travel experts
Reviews of airlines servicing Dulles Intl
Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated September 12, 2026.
Read reviews from past customers who have flown United Airlines,Virgin Atlantic, andIcelandair from London to Washington, D.C. Dulles Intl Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.4
Entertainment
7.1
Crew
8.1
Comfort
7.3
Food
6.7
Boarding
7.7
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Overall
7.4
Entertainment
7.1
Crew
8.1
Comfort
7.3
Food
6.7
Boarding
7.7
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Overall
7.4
Entertainment
7.1
Crew
8.1
Comfort
7.3
Food
6.7
Boarding
7.7
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Overall
7.4
Entertainment
7.1
Crew
8.1
Comfort
7.3
Food
6.7
Boarding
7.7
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Overall
7.4
Entertainment
7.1
Crew
8.1
Comfort
7.3
Food
6.7
Boarding
7.7
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Overall
7.4
Entertainment
7.1
Crew
8.1
Comfort
7.3
Food
6.7
Boarding
7.7
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Related info for your journey
Find useful and relevant information for your journey from London to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Washington, D.C. Dulles Intl Airport?
Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locationsAlexandria
Arlington
Owings Mills
Tysons
Lanham
Reston
Chantilly
Herndon
Rockville
Hyattsville
Fredericksburg
Woodbridge
Falls Church
Sterling
Hanover
Laurel
Oxon Hill
Clinton
Hunt Valley
Silver Spring
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London and Dulles Intl flights
Browse other London and Dulles Intl flight options. Last updated on September 12, 2026.
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Top 9 airlines flying from London to Dulles Intl
Discover the top 9 airlines that operate flights from London to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$556 | Average$740 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$559 | Average$775 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$563 | Average$818 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$566 | Average$680 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$567 | Average$822 | FlexibilityNo cancel fee | On-time78% | |
| Cheapest$581 | Average$750 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$581 | Average$872 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$582 | Average$730 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$658 | Average$783 | FlexibilityNo cancel fee | On-timeN/A |