$496+ 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 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
LON — IAD
Nov 24 — Dec 11
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 February, 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 25, 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 25, 2026.
This Travelis deal was found by Cheapflights users on 10/22. 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/610:40 am -
1 stop33h 35m
Sun 12/1310:30 pm -
1 stop12h 15m
Deal found 10/22![TAP AIR PORTUGAL logo]()
$539
This Gotogate deal was found by Cheapflights users on 10/21. 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 10/298:35 pm -
1 stop26h 55m
Fri 12/47:40 pm -
1 stop18h 50m
Deal found 10/21![Icelandair logo]()
$540
This Gotogate deal was found by Cheapflights users on 10/21. 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.
Tue 12/18:35 pm -
1 stop26h 55m
Sun 12/67:40 pm -
1 stop18h 50m
Deal found 10/21![Icelandair logo]()
$541
This Trip.com deal was found by Cheapflights users on 10/24. 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.
Wed 11/1811:55 am -
1 stop11h 35m
Sun 11/227:40 pm -
1 stop10h 15m
Deal found 10/24![Icelandair logo]()
$541
This Flightnetwork deal was found by Cheapflights users on 10/23. 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.
Mon 11/236:30 pm -
1 stop25h 10m
Sun 12/610:30 pm -
1 stop19h 10m
Deal found 10/23![TAP AIR PORTUGAL logo]()
$542
This Gotogate deal was found by Cheapflights users on 10/20. 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 10/288:35 pm -
1 stop26h 55m
Thu 12/107:40 pm -
1 stop18h 50m
Deal found 10/20![Icelandair logo]()
$543
This Mytrip deal was found by Cheapflights users on 10/21. 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 12/58:35 pm -
1 stop26h 55m
Sat 12/127:40 pm -
1 stop18h 50m
Deal found 10/21![Icelandair logo]()
$545
This oojo deal was found by Cheapflights users on 10/22. 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
Sun 11/157:40 pm -
1 stop10h 15m
Deal found 10/22![Icelandair logo]()
$545
This lastminute.com deal was found by Cheapflights users on 10/23. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/812:15 pm -
1 stop11h 15m
Fri 12/117:40 pm -
1 stop18h 50m
Deal found 10/23![Icelandair logo]()
$546
This Justfly.com deal was found by Cheapflights users on 10/21. 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.
Wed 11/1111:55 am -
1 stop11h 35m
Tue 12/157:40 pm -
1 stop10h 15m
Deal found 10/21![Icelandair logo]()
$546
This Booking.com deal was found by Cheapflights users on 10/22. 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.
Thu 12/38:35 pm -
1 stop26h 55m
Wed 12/97:40 pm -
1 stop18h 50m
Deal found 10/22![Icelandair logo]()
$547
This Justfly.com deal was found by Cheapflights users on 10/22. 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.
Fri 11/611:55 am -
1 stop11h 35m
Thu 11/127:40 pm -
1 stop10h 15m
Deal found 10/22![Icelandair logo]()
$547
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 25, 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 25, 2026.
This Mytrip deal was found by Cheapflights users on 10/22. 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 12/29:30 pm -
2 stops22h 00m
Thu 12/104:30 pm -
2 stops23h 20m
Deal found 10/22![Multiple Airlines logo]()
$602
This British Airways deal was found by Cheapflights users on 10/23. 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.
Mon 4/199:50 am -
1 stop10h 55m
Tue 5/410:25 pm -
Nonstop7h 25m
Deal found 10/23![British Airways logo]()
$610
This Delta deal was found by Cheapflights users on 10/20. 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 12/256:30 am -
2 stops16h 01m
Wed 1/134:00 pm -
1 stop12h 00m
Deal found 10/20![Delta logo]()
$631
This KLM deal was found by Cheapflights users on 10/21. 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.
Sun 12/138:40 am -
1 stop12h 00m
Thu 1/78:45 pm -
Nonstop7h 25m
Deal found 10/21![KLM logo]()
$632
This TAP AIR PORTUGAL deal was found by Cheapflights users on 10/20. 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.
Sun 11/159:25 pm -
2 stops46h 15m
Mon 11/305:25 pm -
1 stop17h 20m
Deal found 10/20![TAP AIR PORTUGAL logo]()
$641
This Virgin Atlantic deal was found by Cheapflights users on 10/20. 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 12/2510:00 am -
1 stop11h 30m
Wed 1/134:00 pm -
2 stops18h 45m
Deal found 10/20![Virgin Atlantic logo]()
$647
This United Airlines deal was found by Cheapflights users on 10/21. 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 12/27:30 am -
1 stop12h 05m
Sun 12/66:20 pm -
Nonstop7h 20m
Deal found 10/21![United Airlines logo]()
$670
This Turkish Airlines deal was found by Cheapflights users on 10/20. 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 stop29h 50m
Tue 11/249:20 pm -
1 stop38h 00m
Deal found 10/20![Turkish Airlines logo]()
$973
This TAP AIR PORTUGAL deal was found by Cheapflights users on 10/22. 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.
Sat 3/610:10 am -
2 stops39h 25m
Tue 3/166:25 pm -
1 stop17h 20m
Deal found 10/22![TAP AIR PORTUGAL logo]()
$644
This Delta deal was found by Cheapflights users on 10/24. 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 11/238:40 am -
1 stop12h 15m
Sun 12/66:55 pm -
Nonstop7h 25m
Deal found 10/24![Delta logo]()
$648
This Virgin Atlantic deal was found by Cheapflights users on 10/22. 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.
Mon 11/237:45 am -
2 stops14h 43m
Wed 12/96:20 pm -
2 stops17h 15m
Deal found 10/22![Virgin Atlantic logo]()
$679
This United Airlines deal was found by Cheapflights users on 10/22. 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 12/2512:05 pm -
Nonstop8h 35m
Fri 1/810:05 am -
1 stop14h 50m
Deal found 10/22![United Airlines logo]()
$702
This Delta deal was found by Cheapflights users on 10/23. 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 11/236:30 am -
1 stop14h 25m
Thu 12/38:45 pm -
Nonstop7h 25m
Deal found 10/23![Delta logo]()
$650
This Mytrip deal was found by Cheapflights users on 10/24. 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 12/87:00 am -
2 stops16h 30m
Tue 12/157:40 pm -
2 stops21h 20m
Deal found 10/24![Multiple Airlines logo]()
$737
This TAP AIR PORTUGAL deal was found by Cheapflights users on 10/20. 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 12/24:35 pm -
1 stop27h 40m
Sun 12/610:30 pm -
1 stop12h 15m
Deal found 10/20![TAP AIR PORTUGAL logo]()
$673
This Virgin Atlantic deal was found by Cheapflights users on 10/22. 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.
Mon 11/237:45 am -
2 stops14h 43m
Sun 12/65:35 pm -
1 stop18h 45m
Deal found 10/22![Virgin Atlantic logo]()
$682
This United Airlines deal was found by Cheapflights users on 10/25. 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.
Mon 12/287:50 am -
1 stop21h 48m
Sat 1/165:28 pm -
2 stops36h 47m
Deal found 10/25![United Airlines logo]()
$705
This Delta deal was found by Cheapflights users on 10/24. 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 stop11h 30m
Sun 12/69:30 pm -
1 stop13h 15m
Deal found 10/24![Delta logo]()
$669
This Virgin Atlantic deal was found by Cheapflights users on 10/22. 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 3/610:00 am -
2 stops18h 02m
Tue 3/166:45 pm -
1 stop9h 25m
Deal found 10/22![Virgin Atlantic logo]()
$683
This Mytrip deal was found by Cheapflights users on 10/23. 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 11/232:20 pm -
2 stops29h 10m
Sun 12/64:30 pm -
2 stops17h 45m
Deal found 10/23![Multiple Airlines logo]()
$768
This TAP AIR PORTUGAL deal was found by Cheapflights users on 10/20. 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.
Fri 11/209:35 pm -
2 stops22h 40m
Fri 11/2710:30 pm -
2 stops28h 50m
Deal found 10/20![TAP AIR PORTUGAL logo]()
$700
This United Airlines deal was found by Cheapflights users on 10/20. 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.
Thu 3/412:05 pm -
Nonstop8h 35m
Sun 5/26:25 pm -
Nonstop7h 30m
Deal found 10/20![United Airlines logo]()
$713
This Delta deal was found by Cheapflights users on 10/22. 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 12/2510:00 am -
1 stop11h 30m
Sun 1/316:40 pm -
1 stop16h 05m
Deal found 10/22![Delta logo]()
$690
This Virgin Atlantic deal was found by Cheapflights users on 10/20. 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 11/207:45 am -
2 stops21h 56m
Fri 11/276:15 pm -
1 stop10h 15m
Deal found 10/20![Virgin Atlantic logo]()
$710
This TAP AIR PORTUGAL deal was found by Cheapflights users on 10/23. 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.
Fri 11/209:35 pm -
2 stops22h 40m
Wed 12/910:30 pm -
1 stop11h 35m
Deal found 10/23![TAP AIR PORTUGAL logo]()
$711
This Mytrip deal was found by Cheapflights users on 10/22. 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.
Sun 2/287:45 am -
2 stops16h 20m
Sun 3/78:50 pm -
1 stop13h 20m
Deal found 10/22![Multiple Airlines logo]()
$784
This Turkish Airlines deal was found by Cheapflights users on 10/20. 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.
Mon 3/110:55 am -
1 stop29h 50m
Thu 4/291:15 pm -
1 stop22h 30m
Deal found 10/20![Turkish Airlines logo]()
$973
This Mytrip deal was found by Cheapflights users on 10/20. 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 11/106:20 am -
2 stops17h 10m
Sat 11/145:25 pm -
2 stops15h 50m
Deal found 10/20![Multiple Airlines logo]()
$790
This Virgin Atlantic deal was found by Cheapflights users on 10/24. 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 12/310:00 am -
1 stop10h 45m
Wed 12/96:20 pm -
2 stops17h 15m
Deal found 10/24![Virgin Atlantic logo]()
$723
This Turkish Airlines deal was found by Cheapflights users on 10/22. 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.
Mon 11/2310:55 am -
1 stop37h 30m
Wed 12/99:20 pm -
1 stop38h 00m
Deal found 10/22![Turkish Airlines logo]()
$974
Last-minute flights from London to Dulles IntlDiscover last-minute flight deals from London to Dulles Intl. Data last updated October 25, 2026 and is based on user searches.
Discover last-minute flight deals from London to Dulles Intl. Data last updated October 25, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 10/20. 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 10/288:35 pm -
1 stop26h 55m
Thu 12/107:40 pm -
1 stop18h 50m
Deal found 10/20![Icelandair logo]()
$543
This Gotogate deal was found by Cheapflights users on 10/21. 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 10/298:35 pm -
1 stop26h 55m
Fri 12/47:40 pm -
1 stop18h 50m
Deal found 10/21![Icelandair logo]()
$540
This oojo deal was found by Cheapflights users on 10/22. 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
Sun 11/157:40 pm -
1 stop10h 15m
Deal found 10/22![Icelandair logo]()
$545
This FlightHub deal was found by Cheapflights users on 10/22. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3012:15 pm -
1 stop11h 15m
Mon 11/167:40 pm -
1 stop10h 10m
Deal found 10/22![Icelandair logo]()
$551
This FlightHub deal was found by Cheapflights users on 10/22. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/3111:55 am -
1 stop11h 35m
Sat 11/147:40 pm -
1 stop10h 15m
Deal found 10/22![Icelandair logo]()
$551
This FlightHub deal was found by Cheapflights users on 10/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/411:55 am -
1 stop11h 35m
Thu 11/127:40 pm -
1 stop10h 15m
Deal found 10/21![Icelandair logo]()
$549
This Kiwi.com deal was found by Cheapflights users on 10/24. 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 11/411:55 am -
1 stop11h 35m
Sat 11/147:40 pm -
1 stop10h 15m
Deal found 10/24![Icelandair logo]()
$555
This Justfly.com deal was found by Cheapflights users on 10/22. 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.
Fri 11/611:55 am -
1 stop11h 35m
Thu 11/127:40 pm -
1 stop10h 15m
Deal found 10/22![Icelandair logo]()
$547
This Justfly.com deal was found by Cheapflights users on 10/21. 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.
Wed 11/1111:55 am -
1 stop11h 35m
Tue 12/157:40 pm -
1 stop10h 15m
Deal found 10/21![Icelandair logo]()
$546
This Trip.com deal was found by Cheapflights users on 10/24. 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.
Wed 11/1811:55 am -
1 stop11h 35m
Sun 11/227:40 pm -
1 stop10h 15m
Deal found 10/24![Icelandair logo]()
$541
This Trip.com deal was found by Cheapflights users on 10/20. 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.
Thu 11/196:00 am -
1 stop14h 15m
Mon 11/305:25 pm -
1 stop19h 05m
Deal found 10/20![TAP AIR PORTUGAL logo]()
$556
This Flightnetwork deal was found by Cheapflights users on 10/23. 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.
Mon 11/236:30 pm -
1 stop25h 10m
Sun 12/610:30 pm -
1 stop19h 10m
Deal found 10/23![TAP AIR PORTUGAL logo]()
$542
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 25, 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 25, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/20. 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 11/187:40 pm -
2 stops24h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Multiple Airlines logo]()
$496
This Kiwi.com deal was found by Cheapflights users on 10/20. 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 12/279:45 am -
2 stops47h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Multiple Airlines logo]()
$497
This Mytrip deal was found by Cheapflights users on 10/20. 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 11/246:00 am -
1 stop13h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![TAP AIR PORTUGAL logo]()
$499
This Booking.com deal was found by Cheapflights users on 10/20. 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 12/1110:40 am -
1 stop14h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![TAP AIR PORTUGAL logo]()
$499
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 11/68:45 pm -
3 stops26h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$500
This Kiwi.com deal was found by Cheapflights users on 10/23. 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 11/87:45 am -
3 stops59h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Multiple Airlines logo]()
$500
This Kiwi.com deal was found by Cheapflights users on 10/24. 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.
Sat 12/196:45 pm -
3 stops49h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Multiple Airlines logo]()
$501
This Booking.com deal was found by Cheapflights users on 10/20. 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.
Mon 11/236:30 pm -
1 stop25h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![TAP AIR PORTUGAL logo]()
$501
This Kiwi.com deal was found by Cheapflights users on 10/24. 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 11/37:45 pm -
3 stops48h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Multiple Airlines logo]()
$501
This Kiwi.com deal was found by Cheapflights users on 10/20. 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 11/207:15 am -
3 stops37h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Multiple Airlines logo]()
$501
This Booking.com deal was found by Cheapflights users on 10/21. 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 11/206:00 am -
1 stop19h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![TAP AIR PORTUGAL logo]()
$502
This Booking.com deal was found by Cheapflights users on 10/20. 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.
Mon 1/114:35 pm -
1 stop27h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![TAP AIR PORTUGAL logo]()
$502
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 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $539 (Justfly.com) |
One-way from | $496 (Kiwi.com) |
Popular in | April |
Cheapest in | March |
Average price | $726 |
Good round-trip deal | $693 or less |
Good one-way deal | $565 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 25, 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.
LGW London Gatwick - IAD Washington, D.C. Dulles Intl
LGWIAD
London Gatwick
Thu 12/17
11:55 am-6:30 pm
1 stop11h 35m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$506
LondonWashington, D.C.
LTN London Luton - IAD Washington, D.C. Dulles Intl
LTNIAD
London Luton
Sat 11/7
9:45 pm-3:15 pm
3 stops46h 30m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$507
LondonWashington, D.C.
LTN London Luton - IAD Washington, D.C. Dulles Intl
LTNIAD
London Luton
Sun 3/28
1:25 pm-8:35 pm
2 stops36h 10m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$509
LondonWashington, D.C.
LTN London Luton - IAD Washington, D.C. Dulles Intl
LTNIAD
London Luton
Thu 11/26
2:55 pm-7:05 pm
2 stops33h 10m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$510
LondonWashington, D.C.
LTN London Luton - IAD Washington, D.C. Dulles Intl
LTNIAD
London Luton
Fri 11/13
6:00 am-8:30 pm
2 stops19h 30m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$511
LondonWashington, D.C.
LTN London Luton - IAD Washington, D.C. Dulles Intl
LTNIAD
London Luton
Wed 12/16
6:10 am-4:20 pm
1 stop15h 10m
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
Sun 3/7
4:20 pm-4:20 pm
1 stop29h 00m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$523
LondonWashington, D.C.
LGW London Gatwick - IAD Washington, D.C. Dulles Intl
LGWIAD
London Gatwick
Wed 1/20
4:35 pm-3:15 pm
1 stop27h 40m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$524
LondonWashington, D.C.
LGW London Gatwick - IAD Washington, D.C. Dulles Intl
LGWIAD
London Gatwick
Fri 1/15
10:40 am-8:30 pm
1 stop14h 50m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$524
LondonWashington, D.C.
LHR London Heathrow - IAD Washington, D.C. Dulles Intl
LHRIAD
London Heathrow
Fri 1/15
8:15 am-8:30 pm
1 stop17h 15m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-6:00 am
Nonstop0h 00m
$528
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 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
STN-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
STN-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 $653). Flying from London to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $778). 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 25, 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.
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 $616 and $838 in January.The cheapest round-trip price found within the last 5 days was $539 on Icelandair (Jan 13-Jan 20).
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 25, 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.
Boarding
7.7
Overall
7.5
Crew
8.1
Food
6.9
Entertainment
7.5
Comfort
7.3
Reviews
1 / 20
10.0
ExcellentEdwin,May 2026
LHR - LAX
Boarding
7.7
Overall
7.5
Crew
8.1
Food
6.9
Entertainment
7.5
Comfort
7.3
Reviews
1 / 20
10.0
ExcellentEdwin,May 2026
LHR - LAX
Boarding
7.7
Overall
7.5
Crew
8.1
Food
6.9
Entertainment
7.5
Comfort
7.3
Reviews
1 / 20
10.0
ExcellentEdwin,May 2026
LHR - LAX
Boarding
7.7
Overall
7.5
Crew
8.1
Food
6.9
Entertainment
7.5
Comfort
7.3
Reviews
1 / 20
10.0
ExcellentEdwin,May 2026
LHR - LAX
Boarding
7.7
Overall
7.5
Crew
8.1
Food
6.9
Entertainment
7.5
Comfort
7.3
Reviews
1 / 20
10.0
ExcellentEdwin,May 2026
LHR - LAX
Boarding
7.7
Overall
7.5
Crew
8.1
Food
6.9
Entertainment
7.5
Comfort
7.3
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
Woodbridge
Arlington
Owings Mills
Lanham
Sterling
Reston
Herndon
Hyattsville
Rockville
Springfield
Fredericksburg
Falls Church
Tysons
Towson
Oxon Hill
Laurel
Clinton
Hunt Valley
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London and Dulles Intl flights
Browse other London and Dulles Intl flight options. Last updated on October 25, 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 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$528 | Average$831 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$544 | Average$803 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$556 | Average$740 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$566 | Average$689 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$567 | Average$750 | FlexibilityNo cancel fee | On-time78% | |
| Cheapest$581 | Average$754 | 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 |