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Dulles Intl

$558+ Cheap flights from Gatwick (LGW) to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/23. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — IAD
May 20 — May 271
Wed 5/20
Wed 5/27
1 adult, Economy
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Cheap flight deals from Gatwick to Dulles Intl

Cheapest flights from Gatwick to Dulles Intl
Explore the most affordable flight options available from Gatwick to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 20, 2026.

This deal was found by Cheapflights users on 4/17. 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.
Thu 4/301:00 pm
LGW
-
IAD
1 stop11h 20m
Icelandair
Sat 5/168:30 pm
IAD
-
LGW
1 stop10h 15m
Icelandair
Deal found 4/17$563
This deal was found by Cheapflights users on 4/18. 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.
Fri 5/83:40 pm
LGW
-
IAD
1 stop11h 35m
Icelandair
Sat 5/168:30 pm
IAD
-
LGW
1 stop10h 15m
Icelandair
Deal found 4/18$569
This deal was found by Cheapflights users on 4/17. 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 5/273:40 pm
LGW
-
IAD
1 stop11h 35m
Icelandair
Mon 6/18:30 pm
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 4/17$595
This deal was found by Cheapflights users on 4/17. 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.
Thu 5/141:00 pm
LGW
-
IAD
1 stop11h 20m
Icelandair
Mon 6/18:30 pm
IAD
-
LGW
1 stop10h 15m
Icelandair
Deal found 4/17$597
This Gotogate deal was found by Cheapflights users on 4/16. 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 9/303:40 pm
LGW
-
IAD
1 stop32h 40m
Icelandair
Wed 10/148:30 pm
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 4/16$615
This Gotogate deal was found by Cheapflights users on 4/20. 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 10/213:40 pm
LGW
-
IAD
1 stop32h 40m
Icelandair
Wed 10/288:40 pm
IAD
-
LGW
1 stop10h 15m
Icelandair
Deal found 4/20$616
This The Travel House deal was found by Cheapflights users on 4/19. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/13:40 pm
LGW
-
IAD
1 stop32h 40m
Icelandair
Mon 10/58:30 pm
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 4/19$617
This The Travel House deal was found by Cheapflights users on 4/18. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/93:40 pm
LGW
-
IAD
1 stop32h 40m
Icelandair
Fri 10/1611:20 pm
IAD
-
LGW
1 stop10h 20m
Icelandair
Deal found 4/18$618
This The Travel House deal was found by Cheapflights users on 4/20. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/281:00 pm
LGW
-
IAD
1 stop11h 20m
Icelandair
Tue 5/58:30 pm
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 4/20$621
This The Travel House deal was found by Cheapflights users on 4/20. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/281:00 pm
LGW
-
IAD
1 stop11h 20m
Icelandair
Sat 5/28:30 pm
IAD
-
LGW
1 stop10h 15m
Icelandair
Deal found 4/20$622
This Gotogate deal was found by Cheapflights users on 4/19. 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 7/83:40 pm
LGW
-
IAD
1 stop11h 35m
Icelandair
Wed 7/1511:20 pm
IAD
-
LGW
1 stop10h 20m
Icelandair
Deal found 4/19$623
This The Travel House deal was found by Cheapflights users on 4/19. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/301:00 pm
LGW
-
IAD
1 stop11h 20m
Icelandair
Mon 5/48:30 pm
IAD
-
LGW
1 stop10h 15m
Icelandair
Deal found 4/19$624

Find flight deals from Gatwick to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Gatwick (LGW) 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 April 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$563

One-way from

$558
(Kiwi.com)

Popular in

July

Cheapest in

November

Average price

$711
Provider with most accurate pricing for London Gatwick-Washington, D.C. Dulles Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for London Gatwick-Washington, D.C. Dulles Intl flights.
Search Deals
From London Gatwick to Washington, D.C. Dulles Intl
Search Deals
One-way flight from London Gatwick to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($229 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Gatwick 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 2,558,603 searches. Data last updated April 20, 2026.
Use the filters below to find and compare flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 6/30

3:40 pm-7:20 pm

1 stop32h 40m

Washington, D.C. Dulles Intl

Wed 7/15

11:20 pm-2:40 pm

1 stop10h 20m

$666
Quickest round-trip

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 9/10

1:00 pm-7:20 pm

1 stop11h 20m

Washington, D.C. Dulles Intl

Tue 9/22

11:20 pm-2:40 pm

1 stop10h 20m

$670

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Wed 7/22

10:25 am-7:35 pm

1 stop14h 10m

Washington, D.C. Dulles Intl

Wed 8/5

9:45 pm-4:00 pm

1 stop13h 15m

$722

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Wed 6/24

10:25 am-7:35 pm

1 stop14h 10m

Washington, D.C. Dulles Intl

Thu 7/9

6:15 pm-9:25 am

1 stop10h 10m

$723

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 7/23

10:25 am-11:14 pm

2 stops17h 49m

Washington, D.C. Dulles Intl

Mon 7/27

6:15 pm-9:40 am

1 stop10h 25m

$732

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 5/5

8:40 pm-3:30 pm

1 stop23h 50m

Washington, D.C. Dulles Intl

Sun 5/17

5:00 pm-8:00 pm

1 stop22h 00m

$741

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Fri 5/1

8:40 pm-3:30 pm

1 stop23h 50m

Washington, D.C. Dulles Intl

Tue 5/12

5:00 pm-8:00 pm

1 stop22h 00m

$741

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Fri 5/1

10:25 am-11:03 pm

2 stops17h 38m

Washington, D.C. Dulles Intl

Thu 5/14

9:45 pm-4:00 pm

1 stop13h 15m

$741

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Sat 8/8

10:25 am-11:14 pm

2 stops17h 49m

Washington, D.C. Dulles Intl

Wed 8/26

6:15 pm-9:25 am

1 stop10h 10m

$759

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 9/3

10:25 am-12:10 am

2 stops18h 45m

Washington, D.C. Dulles Intl

Thu 9/10

6:15 pm-4:00 pm

1 stop16h 45m

$768

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

Showing 1-10 of 22 resultsSorted by cheapest first
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  • Most accurate provider: When it comes to deals on London Gatwick Airport-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 Gatwick Airport-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 Gatwick Airport-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 Gatwick Airport-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 Gatwick Airport-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 Gatwick to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Gatwick with our price prediction graph.
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.

Related info for your journey

Find useful and relevant information for your journey from Gatwick to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport?

    There are many flights that can get you from London Gatwick Airport to Washington, D.C. Dulles Intl Airport in 14h 10m. Fly via Icelandair, Delta, or Virgin Atlantic to get the fastest option. Airlines will cover a distance of 3683 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Gatwick to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Gatwick to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Gatwick to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Gatwick to Dulles Intl.

  • Can I find deals for business class flights from Gatwick to Dulles Intl?

    Yes. Cheapflights offers flight deals from Gatwick to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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 locations
Alexandria
Tysons
Owings Mills
Springfield
Arlington
Woodbridge
Silver Spring
Herndon
Rockville
Hyattsville
Fredericksburg
Hanover
Laurel
Manassas
Largo
Upper Marlboro
Waldorf
Bowie
Clinton
Hunt Valley

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Alternative routes for Gatwick to Dulles Intl

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