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Dulles Intl

$544+ 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 7/3. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — IAD
May 1 — May 81
Fri 5/1
Fri 5/8
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 1, 2026.

This Gotogate deal was found by Cheapflights users on 3/29. 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 5/213:40 pm
LGW
-
IAD
1 stop32h 40m
Icelandair
Sun 5/2411:20 pm
IAD
-
LGW
1 stop31h 25m
Icelandair
Deal found 3/29$548
This Expedia deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/286:35 pm
LGW
-
IAD
1 stop25h 40m
SWISS
Tue 5/510:25 pm
IAD
-
LGW
2 stops14h 25m
SWISS
Deal found 3/29$557
This deal was found by Cheapflights users on 4/1. 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 5/71:00 pm
LGW
-
IAD
1 stop11h 20m
Icelandair
Tue 5/198:30 pm
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 4/1$558
This FlightHub deal was found by Cheapflights users on 3/29. 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 6/243:40 pm
LGW
-
IAD
1 stop11h 35m
Icelandair
Sun 6/2811:20 pm
IAD
-
LGW
1 stop10h 20m
Icelandair
Deal found 3/29$560
This Mytrip deal was found by Cheapflights users on 3/30. 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 4/298:50 am
LGW
-
IAD
2 stops15h 30m
Multiple Airlines
Mon 5/48:30 pm
IAD
-
LGW
2 stops16h 25m
Multiple Airlines
Deal found 3/30$580
This Mytrip deal was found by Cheapflights users on 3/30. 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 4/308:40 am
LGW
-
IAD
2 stops15h 40m
Multiple Airlines
Wed 5/68:30 pm
IAD
-
LGW
2 stops19h 10m
Multiple Airlines
Deal found 3/30$584
This Expedia deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/209:25 am
LGW
-
IAD
1 stop12h 20m
SWISS
Fri 4/248:20 pm
IAD
-
LGW
1 stop16h 30m
SWISS
Deal found 3/28$588
This Expedia deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/39:25 am
LGW
-
IAD
1 stop12h 20m
SWISS
Tue 9/88:20 pm
IAD
-
LGW
1 stop16h 30m
SWISS
Deal found 3/29$593
This SWISS deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/279:25 am
LGW
-
IAD
1 stop12h 20m
SWISS
Sun 5/38:20 pm
IAD
-
LGW
1 stop16h 30m
SWISS
Deal found 3/28$595
This deal was found by Cheapflights users on 4/1. 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 5/238:30 pm
IAD
-
LGW
1 stop10h 15m
Icelandair
Deal found 4/1$604
This deal was found by Cheapflights users on 4/1. 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 5/71:00 pm
LGW
-
IAD
1 stop11h 20m
Icelandair
Sat 5/238:30 pm
IAD
-
LGW
1 stop10h 15m
Icelandair
Deal found 4/1$605

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 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$548
(Gotogate)

One-way from

$544
(Kiwi.com)

Popular in

July

Cheapest in

November

Average price

$697
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. 24% potential increase in price ($234 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($31 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 1, 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

Wed 4/22

3:40 pm-7:20 pm

1 stop32h 40m

Washington, D.C. Dulles Intl

Sun 4/26

8:30 pm-2:40 pm

1 stop13h 10m

$715
Quickest round-trip

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 6/23

10:35 am-7:35 pm

1 stop14h 00m

Washington, D.C. Dulles Intl

Fri 7/3

6:15 pm-9:25 am

1 stop10h 10m

$747

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Fri 9/18

10:25 am-7:35 pm

1 stop14h 10m

Washington, D.C. Dulles Intl

Fri 9/25

6:15 pm-9:25 am

1 stop10h 10m

$754

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Wed 8/19

10:25 am-7:35 pm

1 stop14h 10m

Washington, D.C. Dulles Intl

Wed 8/26

9:45 pm-4:00 pm

1 stop13h 15m

$759

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 6/23

10:35 am-7:35 pm

1 stop14h 00m

Washington, D.C. Dulles Intl

Mon 7/6

9:45 pm-4:00 pm

1 stop13h 15m

$768

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Wed 5/6

3:40 pm-7:20 pm

1 stop32h 40m

Washington, D.C. Dulles Intl

Tue 5/19

8:30 pm-2:40 pm

1 stop13h 10m

$777

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 6/18

10:25 am-7:35 pm

1 stop14h 10m

Washington, D.C. Dulles Intl

Mon 7/6

12:29 pm-4:00 pm

2 stops22h 31m

$783

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Wed 4/22

4:25 pm-3:10 pm

1 stop27h 45m

Washington, D.C. Dulles Intl

Sun 4/26

10:35 pm-11:20 am

2 stops31h 45m

$855

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Sun 4/26

9:25 am-4:45 pm

1 stop12h 20m

Washington, D.C. Dulles Intl

Sun 5/3

8:20 pm-5:50 pm

1 stop16h 30m

$867
Cheapest one-way
Quickest one-way

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 6/30

9:25 am-4:45 pm

1 stop12h 20m

$553

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 20 resultsSorted by cheapest first
1
2
  • 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. Fly via Icelandair or Delta 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
Woodbridge
Tysons
Owings Mills
Arlington
Springfield
Silver Spring
Herndon
Hyattsville
Hanover
Laurel
Rockville
Upper Marlboro
Fredericksburg
Largo
Bowie
Clinton
Towson
Cordova
Manassas

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Alternative routes for Gatwick to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Dulles Intl flights
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