$484+ 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 11/29. Fares are subject to change and may not be available on all flights or dates of travel.
LON — IAD
Nov 10 — Nov 171
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 March or September, booked 84 days in advance, depart on a Wednesday or Friday 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 October 11, 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 October 11, 2026.
This TravelUp deal was found by Cheapflights users on 10/6. 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.
Mon 12/148:35 pm -
1 stop26h 55m
Mon 12/217:40 pm -
1 stop18h 50m
Deal found 10/6![Icelandair logo]()
$528
This ResecentrumGruppen deal was found by Cheapflights users on 10/9. 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 ResecentrumGruppen is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/196:00 am -
1 stop14h 15m
Sat 12/55:25 pm -
1 stop14h 15m
Deal found 10/9![TAP AIR PORTUGAL logo]()
$531
This deal was found by Cheapflights users on 10/10. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/234:25 pm -
Nonstop8h 30m
Wed 1/66:05 pm -
Nonstop7h 10m
Deal found 10/10![British Airways logo]()
$534
This oojo deal was found by Cheapflights users on 10/7. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/911:55 am -
1 stop11h 35m
Sat 11/217:40 pm -
1 stop10h 15m
Deal found 10/7![Icelandair logo]()
$535
This Flightnetwork deal was found by Cheapflights users on 10/10. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/127:55 pm -
1 stop29h 35m
Thu 11/265:25 pm -
1 stop19h 05m
Deal found 10/10![TAP AIR PORTUGAL logo]()
$536
This oojo deal was found by Cheapflights users on 10/8. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3011:55 am -
1 stop11h 35m
Thu 11/57:40 pm -
1 stop10h 15m
Deal found 10/8![Icelandair logo]()
$536
This Justfly.com deal was found by Cheapflights users on 10/6. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/138:35 pm -
1 stop26h 55m
Tue 12/227:40 pm -
1 stop10h 10m
Deal found 10/6![Icelandair logo]()
$537
This lol.travel deal was found by Cheapflights users on 10/6. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/136:00 am -
1 stop19h 30m
Thu 11/265:25 pm -
1 stop14h 15m
Deal found 10/6![TAP AIR PORTUGAL logo]()
$539
This Justfly.com deal was found by Cheapflights users on 10/7. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/911:55 am -
1 stop11h 35m
Sun 11/157:40 pm -
1 stop10h 15m
Deal found 10/7![Icelandair logo]()
$540
This Mytrip deal was found by Cheapflights users on 10/9. 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.
Mon 11/237:45 am -
2 stops35h 55m
Mon 11/305:25 pm -
2 stops22h 25m
Deal found 10/9![Multiple Airlines logo]()
$541
This Gotogate deal was found by Cheapflights users on 10/11. 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.
Thu 10/2911:55 am -
1 stop11h 35m
Thu 11/57:40 pm -
1 stop10h 15m
Deal found 10/11![Icelandair logo]()
$541
This Flightnetwork deal was found by Cheapflights users on 10/10. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/124:00 pm -
1 stop33h 30m
Thu 11/265:25 pm -
1 stop17h 25m
Deal found 10/10![TAP AIR PORTUGAL logo]()
$542
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 October 11, 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 October 11, 2026.
This Mytrip deal was found by Cheapflights users on 10/9. 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.
Mon 11/237:45 am -
2 stops35h 55m
Mon 11/305:25 pm -
2 stops22h 25m
Deal found 10/9![Multiple Airlines logo]()
$545
This Delta deal was found by Cheapflights users on 10/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/198:40 am -
1 stop12h 05m
Sat 12/511:30 am -
1 stop15h 15m
Deal found 10/8![Delta logo]()
$630
This Virgin Atlantic deal was found by Cheapflights users on 10/9. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1210:00 am -
1 stop11h 30m
Thu 11/2611:37 am -
2 stops23h 08m
Deal found 10/9![Virgin Atlantic logo]()
$647
This United Airlines deal was found by Cheapflights users on 10/6. 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.
Wed 12/29:00 am -
1 stop13h 00m
Sun 12/610:15 pm -
Nonstop7h 35m
Deal found 10/6![United Airlines logo]()
$656
This SWISS deal was found by Cheapflights users on 10/11. 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.
Wed 11/117:05 pm -
1 stop25h 25m
Mon 11/165:25 pm -
1 stop14h 25m
Deal found 10/11![SWISS logo]()
$672
This Icelandair deal was found by Cheapflights users on 10/10. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/208:35 pm -
1 stop26h 55m
Wed 1/67:40 pm -
1 stop18h 50m
Deal found 10/10![Icelandair logo]()
$681
This KLM deal was found by Cheapflights users on 10/8. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2310:00 am -
1 stop10h 55m
Tue 12/15:45 pm -
1 stop9h 25m
Deal found 10/8![KLM logo]()
$682
This TAP AIR PORTUGAL deal was found by Cheapflights users on 10/8. 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.
Mon 11/239:35 pm -
2 stops22h 05m
Sun 11/2910:30 pm -
1 stop12h 15m
Deal found 10/8![TAP AIR PORTUGAL logo]()
$683
This Austrian Airlines deal was found by Cheapflights users on 10/6. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/94:20 pm -
Nonstop8h 55m
Sat 11/215:29 pm -
1 stop33h 26m
Deal found 10/6![Austrian Airlines logo]()
$700
This British Airways deal was found by Cheapflights users on 10/10. 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.
Wed 12/27:15 pm -
1 stop26h 05m
Sun 12/65:15 pm -
1 stop14h 25m
Deal found 10/10![British Airways logo]()
$952
This Mytrip deal was found by Cheapflights users on 10/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/312:15 pm -
2 stops30h 55m
Tue 12/810:55 pm -
2 stops18h 30m
Deal found 10/8![Multiple Airlines logo]()
$571
This Delta deal was found by Cheapflights users on 10/6. 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 11/248:40 am -
1 stop12h 05m
Sun 11/296:55 pm -
Nonstop7h 25m
Deal found 10/6![Delta logo]()
$633
This Mytrip deal was found by Cheapflights users on 10/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1212:15 pm -
2 stops30h 55m
Wed 11/256:00 pm -
2 stops18h 35m
Deal found 10/11![Multiple Airlines logo]()
$597
This Virgin Atlantic deal was found by Cheapflights users on 10/6. 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 11/249:20 am -
1 stop11h 25m
Tue 12/15:45 pm -
1 stop9h 25m
Deal found 10/6![Virgin Atlantic logo]()
$663
This United Airlines deal was found by Cheapflights users on 10/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2212:05 pm -
Nonstop8h 35m
Sun 11/296:20 pm -
Nonstop7h 20m
Deal found 10/8![United Airlines logo]()
$695
This TAP AIR PORTUGAL deal was found by Cheapflights users on 10/11. 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 11/116:30 pm -
1 stop25h 45m
Tue 11/175:25 pm -
1 stop14h 15m
Deal found 10/11![TAP AIR PORTUGAL logo]()
$696
This Delta deal was found by Cheapflights users on 10/10. 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 12/1810:00 am -
1 stop10h 55m
Fri 1/1511:05 am -
1 stop14h 45m
Deal found 10/10![Delta logo]()
$639
This Mytrip deal was found by Cheapflights users on 10/9. 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.
Thu 11/55:00 pm -
2 stops27h 55m
Fri 11/138:10 pm -
2 stops16h 25m
Deal found 10/9![Multiple Airlines logo]()
$603
This Virgin Atlantic deal was found by Cheapflights users on 10/8. 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.
Wed 11/1110:00 am -
2 stops19h 41m
Wed 11/256:15 pm -
1 stop17h 20m
Deal found 10/8![Virgin Atlantic logo]()
$687
This Delta deal was found by Cheapflights users on 10/9. 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.
Thu 11/191:20 pm -
Nonstop8h 40m
Tue 12/16:55 pm -
Nonstop7h 25m
Deal found 10/9![Delta logo]()
$652
This Virgin Atlantic deal was found by Cheapflights users on 10/9. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1410:00 am -
1 stop14h 20m
Sun 11/226:40 pm -
1 stop16h 05m
Deal found 10/9![Virgin Atlantic logo]()
$694
This KLM deal was found by Cheapflights users on 10/10. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2410:00 am -
1 stop10h 45m
Sun 11/295:45 pm -
1 stop9h 25m
Deal found 10/10![KLM logo]()
$858
This Icelandair deal was found by Cheapflights users on 10/11. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2011:55 am -
1 stop11h 35m
Sat 12/267:40 pm -
1 stop10h 15m
Deal found 10/11![Icelandair logo]()
$875
This Delta deal was found by Cheapflights users on 10/11. 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.
Wed 12/2310:00 am -
1 stop11h 30m
Thu 1/286:40 pm -
1 stop16h 05m
Deal found 10/11![Delta logo]()
$663
This Kiwi.com deal was found by Cheapflights users on 10/9. 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.
Thu 11/56:50 am -
1 stop14h 40m
Thu 11/125:50 pm -
1 stop14h 55m
Deal found 10/9![Multiple Airlines logo]()
$680
This Virgin Atlantic deal was found by Cheapflights users on 10/7. 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.
Wed 11/48:40 am -
2 stops21h 02m
Wed 11/116:20 pm -
2 stops17h 15m
Deal found 10/7![Virgin Atlantic logo]()
$699
This TAP AIR PORTUGAL deal was found by Cheapflights users on 10/11. 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.
Thu 11/124:00 pm -
1 stop33h 30m
Thu 11/2612:37 pm -
2 stops16h 13m
Deal found 10/11![TAP AIR PORTUGAL logo]()
$872
This SWISS deal was found by Cheapflights users on 10/9. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/37:05 pm -
1 stop25h 25m
Sat 11/75:25 pm -
1 stop14h 25m
Deal found 10/9![SWISS logo]()
$965
This Delta deal was found by Cheapflights users on 10/6. 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.
Mon 11/2310:00 am -
1 stop10h 55m
Tue 12/15:45 pm -
1 stop10h 05m
Deal found 10/6![Delta logo]()
$663
This Lufthansa deal was found by Cheapflights users on 10/9. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/64:20 pm -
Nonstop8h 55m
Mon 12/1410:15 pm -
Nonstop7h 35m
Deal found 10/9![Multiple Airlines logo]()
$694
Last-minute flights from London to Dulles IntlDiscover last-minute flight deals from London to Dulles Intl. Data last updated October 11, 2026 and is based on user searches.
Discover last-minute flight deals from London to Dulles Intl. Data last updated October 11, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 10/8. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/216:00 am -
1 stop14h 10m
Thu 12/105:25 pm -
1 stop13h 00m
Deal found 10/8![TAP AIR PORTUGAL logo]()
$545
This Gotogate deal was found by Cheapflights users on 10/11. 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.
Thu 10/2911:55 am -
1 stop11h 35m
Thu 11/57:40 pm -
1 stop10h 15m
Deal found 10/11![Icelandair logo]()
$541
This oojo deal was found by Cheapflights users on 10/8. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3011:55 am -
1 stop11h 35m
Thu 11/57:40 pm -
1 stop10h 15m
Deal found 10/8![Icelandair logo]()
$536
This oojo deal was found by Cheapflights users on 10/7. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/911:55 am -
1 stop11h 35m
Sat 11/217:40 pm -
1 stop10h 15m
Deal found 10/7![Icelandair logo]()
$535
This Justfly.com deal was found by Cheapflights users on 10/7. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/911:55 am -
1 stop11h 35m
Sun 11/157:40 pm -
1 stop10h 15m
Deal found 10/7![Icelandair logo]()
$540
This Flightnetwork deal was found by Cheapflights users on 10/10. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/127:55 pm -
1 stop29h 35m
Thu 11/265:25 pm -
1 stop19h 05m
Deal found 10/10![TAP AIR PORTUGAL logo]()
$536
This Flightnetwork deal was found by Cheapflights users on 10/10. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/124:00 pm -
1 stop33h 30m
Thu 11/265:25 pm -
1 stop17h 25m
Deal found 10/10![TAP AIR PORTUGAL logo]()
$542
This lol.travel deal was found by Cheapflights users on 10/6. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/136:00 am -
1 stop19h 30m
Thu 11/265:25 pm -
1 stop14h 15m
Deal found 10/6![TAP AIR PORTUGAL logo]()
$539
This ResecentrumGruppen deal was found by Cheapflights users on 10/9. 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 ResecentrumGruppen is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/196:00 am -
1 stop14h 15m
Sat 12/55:25 pm -
1 stop14h 15m
Deal found 10/9![TAP AIR PORTUGAL logo]()
$531
This Flightnetwork deal was found by Cheapflights users on 10/9. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/194:00 pm -
1 stop33h 30m
Sat 12/55:25 pm -
1 stop11h 25m
Deal found 10/9![TAP AIR PORTUGAL logo]()
$543
This Ticket deal was found by Cheapflights users on 10/8. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2012:25 pm -
1 stop13h 05m
Sun 12/610:30 pm -
1 stop14h 00m
Deal found 10/8![TAP AIR PORTUGAL logo]()
$543
This Mytrip deal was found by Cheapflights users on 10/9. 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.
Mon 11/237:45 am -
2 stops35h 55m
Mon 11/305:25 pm -
2 stops22h 25m
Deal found 10/9![Multiple Airlines logo]()
$541
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 October 11, 2026.
Search for one-way flight options from London to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated October 11, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/9. 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 11/299:55 am -
2 stops57h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![Multiple Airlines logo]()
$484
This Kiwi.com deal was found by Cheapflights users on 10/9. 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 1/199:30 pm -
1 stop23h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![Multiple Airlines logo]()
$484
This Gotogate deal was found by Cheapflights users on 10/7. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/611:55 am -
1 stop11h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![Icelandair logo]()
$484
This Mytrip deal was found by Cheapflights users on 10/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/209:25 pm -
1 stop29h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/11![Icelandair logo]()
$485
This Kiwi.com deal was found by Cheapflights users on 10/8. 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.
Wed 10/289:50 am -
2 stops17h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Multiple Airlines logo]()
$485
This British Airways deal was found by Cheapflights users on 10/9. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/84:25 pm -
Nonstop8h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![British Airways logo]()
$486
This Kiwi.com deal was found by Cheapflights users on 10/7. 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.
Thu 10/2911:00 am -
1 stop27h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![Multiple Airlines logo]()
$486
This Finnair deal was found by Cheapflights users on 10/9. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/227:15 pm -
1 stop26h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![Multiple Airlines logo]()
$486
This Kiwi.com deal was found by Cheapflights users on 10/6. 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.
Wed 10/215:10 pm -
3 stops51h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![Multiple Airlines logo]()
$487
This Trip.com deal was found by Cheapflights users on 10/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/77:40 pm -
1 stop25h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![Iberia logo]()
$487
This Kiwi.com deal was found by Cheapflights users on 10/9. 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 11/89:45 pm -
3 stops25h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![Multiple Airlines logo]()
$488
This Kiwi.com deal was found by Cheapflights users on 10/9. 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.
Mon 10/267:15 pm -
3 stops48h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![Multiple Airlines logo]()
$488
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 October 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $528 (TravelUp) |
One-way from | $484 (Kiwi.com) |
Popular in | April |
Cheapest in | March |
Average price | $726 |
Good round-trip deal | $636 or less |
Good one-way deal | $609 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 October 11, 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 12/31
5:20 pm-4:30 am
2 stops40h 10m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$502
LondonWashington, D.C.
LTN London Luton - IAD Washington, D.C. Dulles Intl
LTNIAD
London Luton
Sun 12/13
8:40 am-7:20 pm
1 stop15h 40m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$516
LondonWashington, D.C.
LTN London Luton - IAD Washington, D.C. Dulles Intl
LTNIAD
London Luton
Sun 12/20
8:25 pm-2:40 pm
3 stops47h 15m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$518
LondonWashington, D.C.
LTN London Luton - IAD Washington, D.C. Dulles Intl
LTNIAD
London Luton
Mon 12/7
6:10 am-3:45 pm
1 stop14h 35m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$519
LondonWashington, D.C.
LTN London Luton - IAD Washington, D.C. Dulles Intl
LTNIAD
London Luton
Mon 10/26
8:25 pm-3:45 pm
3 stops47h 20m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$519
LondonWashington, D.C.
SEN London Southend - IAD Washington, D.C. Dulles Intl
SENIAD
London Southend
Sun 11/29
5:15 pm-2:40 pm
2 stops50h 25m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$520
LondonWashington, D.C.
LTN London Luton - IAD Washington, D.C. Dulles Intl
LTNIAD
London Luton
Thu 12/17
6:15 am-3:45 pm
1 stop14h 30m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$525
LondonWashington, D.C.
SEN London Southend - IAD Washington, D.C. Dulles Intl
SENIAD
London Southend
Wed 10/28
5:20 pm-5:30 am
3 stops40h 10m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$533
LondonWashington, D.C.
LTN London Luton - IAD Washington, D.C. Dulles Intl
LTNIAD
London Luton
Mon 11/23
7:45 am-2:40 pm
2 stops35h 55m
Washington, D.C. Dulles Intl
Mon 11/30
5:25 pm-8:50 pm
2 stops22h 25m
$545
LondonWashington, D.C.
LTN London Luton - IAD Washington, D.C. Dulles Intl
LTNIAD
London Luton
Thu 12/3
12:15 pm-2:10 pm
2 stops30h 55m
Washington, D.C. Dulles Intl
Tue 12/8
10:55 pm-10:25 pm
2 stops18h 30m
$571
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 October.
| 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
LTN-IAD
LHR-IAD
LGW-IAD
LCY-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
LTN-IAD
LHR-IAD
LGW-IAD
LCY-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 $657). Flying from London to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $777). 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 October 11, 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 October 11, 2026.
The most flights from LON to IAD are scheduled on a Monday (31 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (26 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 $589 and $790 in December.The cheapest round-trip price found within the last 5 days was $528 on Icelandair (Dec 14-Dec 21).
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 140 minutes.
What is the most punctual flight time for London to Washington, D.C. flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Saturday 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 47 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 October 11, 2026.
Read reviews from past customers who have flown Virgin Atlantic,United Airlines, 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
7.5
Boarding
7.7
Entertainment
7.5
Food
6.9
Comfort
7.3
Crew
8.1
Reviews
1 / 20
10.0
ExcellentEdwin,May 2026
LHR - LAX
Overall
7.5
Boarding
7.7
Entertainment
7.5
Food
6.9
Comfort
7.3
Crew
8.1
Reviews
1 / 20
10.0
ExcellentEdwin,May 2026
LHR - LAX
Overall
7.5
Boarding
7.7
Entertainment
7.5
Food
6.9
Comfort
7.3
Crew
8.1
Reviews
1 / 20
10.0
ExcellentEdwin,May 2026
LHR - LAX
Overall
7.5
Boarding
7.7
Entertainment
7.5
Food
6.9
Comfort
7.3
Crew
8.1
Reviews
1 / 20
10.0
ExcellentEdwin,May 2026
LHR - LAX
Overall
7.5
Boarding
7.7
Entertainment
7.5
Food
6.9
Comfort
7.3
Crew
8.1
Reviews
1 / 20
10.0
ExcellentEdwin,May 2026
LHR - LAX
Overall
7.5
Boarding
7.7
Entertainment
7.5
Food
6.9
Comfort
7.3
Crew
8.1
Reviews
1 / 20
10.0
ExcellentEdwin,May 2026
LHR - LAX
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
Chantilly
Arlington
Woodbridge
Owings Mills
Lanham
Sterling
Tysons
Herndon
Reston
Hyattsville
Rockville
Springfield
Fredericksburg
Falls Church
Oxon Hill
Laurel
Towson
Clinton
Hunt Valley
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London and Dulles Intl flights
Browse other London and Dulles Intl flight options. Last updated on October 11, 2026.
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Top 10 airlines flying from London to Dulles Intl
Discover the top 10 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 October 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$528 | Average$831 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$556 | Average$740 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$563 | Average$813 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$566 | Average$686 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$567 | Average$750 | FlexibilityNo cancel fee | On-time78% | |
| Cheapest$581 | Average$757 | 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$583 | Average$836 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$658 | Average$783 | FlexibilityNo cancel fee | On-timeN/A |