HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Dulles Intl

$491+ 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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — IAD
Mar 21 — Mar 281
Sat 3/21
Sat 3/28
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Gatwick 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.

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 February 19, 2026.

This Trip.com deal was found by Cheapflights users on 2/15. 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.
Sat 5/93:40 pm
LGW
-
IAD
1 stop32h 40m
Icelandair
Mon 5/258:30 pm
IAD
-
LGW
1 stop10h 15m
Icelandair
Deal found 2/15$532
This Booking.com deal was found by Cheapflights users on 2/18. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/211:00 pm
LGW
-
IAD
1 stop11h 20m
Icelandair
Mon 5/258:30 pm
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 2/18$539
This FlightHub deal was found by Cheapflights users on 2/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/313:40 pm
LGW
-
IAD
1 stop11h 35m
Icelandair
Sun 6/711:20 pm
IAD
-
LGW
1 stop10h 20m
Icelandair
Deal found 2/18$542
This Booking.com deal was found by Cheapflights users on 2/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/73:40 pm
LGW
-
IAD
1 stop11h 35m
Icelandair
Fri 6/1911:20 pm
IAD
-
LGW
1 stop10h 20m
Icelandair
Deal found 2/17$543
This FlightHub deal was found by Cheapflights users on 2/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/163:40 pm
LGW
-
IAD
1 stop32h 40m
Icelandair
Wed 7/1511:20 pm
IAD
-
LGW
1 stop10h 20m
Icelandair
Deal found 2/16$544
This TravelTrolley deal was found by Cheapflights users on 2/17. 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 TravelTrolley is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/261:00 pm
LGW
-
IAD
1 stop11h 20m
Icelandair
Fri 5/298:30 pm
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 2/17$551
This Trip.com deal was found by Cheapflights users on 2/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/211:00 pm
LGW
-
IAD
1 stop11h 20m
Icelandair
Sun 5/318:30 pm
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 2/16$558
This Kiwi.com deal was found by Cheapflights users on 2/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/123:40 pm
LGW
-
IAD
1 stop11h 35m
Icelandair
Sun 7/1211:20 pm
IAD
-
LGW
1 stop10h 20m
Icelandair
Deal found 2/16$563
This Icelandair deal was found by Cheapflights users on 2/17. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/191:00 pm
LGW
-
IAD
1 stop11h 20m
Icelandair
Wed 5/278:30 pm
IAD
-
LGW
1 stop10h 15m
Icelandair
Deal found 2/17$565
This Icelandair deal was found by Cheapflights users on 2/16. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/73:40 pm
LGW
-
IAD
1 stop11h 35m
Icelandair
Wed 7/1511:20 pm
IAD
-
LGW
1 stop10h 20m
Icelandair
Deal found 2/16$566
This FlightHub deal was found by Cheapflights users on 2/15. 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 3/411:55 am
LGW
-
IAD
1 stop11h 35m
Icelandair
Wed 3/188:40 pm
IAD
-
LGW
1 stop10h 15m
Icelandair
Deal found 2/15$575
This Kiwi.com deal was found by Cheapflights users on 2/16. 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 Kiwi.com 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
Fri 5/18:30 pm
IAD
-
LGW
1 stop10h 15m
Icelandair
Deal found 2/16$576

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 February 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$532
(Trip.com)

One-way from

$491
(Kiwi.com)

Popular in

July

Cheapest in

November

Average price

$652
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. 22% potential increase in price ($217 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 February 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 February 19, 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

Gatwick

Fly to

Dulles Intl

Route

Depart

Return

Price

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 5/19

1:00 pm-7:20 pm

1 stop11h 20m

Washington, D.C. Dulles Intl

Thu 5/28

8:30 pm-2:40 pm

1 stop13h 10m

$565

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Wed 5/27

3:40 pm-10:15 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Sat 5/30

8:30 pm-11:45 am

1 stop10h 15m

$565

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 5/21

1:00 pm-7:20 pm

1 stop11h 20m

Washington, D.C. Dulles Intl

Sat 5/30

8:30 pm-11:45 am

1 stop10h 15m

$565

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Wed 5/20

3:40 pm-10:15 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Sat 5/30

8:30 pm-11:45 am

1 stop10h 15m

$565

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 5/19

1:00 pm-7:20 pm

1 stop11h 20m

Washington, D.C. Dulles Intl

Fri 5/29

11:20 pm-2:40 pm

1 stop10h 20m

$565

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 5/26

1:00 pm-7:20 pm

1 stop11h 20m

Washington, D.C. Dulles Intl

Sat 5/30

8:30 pm-11:45 am

1 stop10h 15m

$565

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 5/21

1:00 pm-7:20 pm

1 stop11h 20m

Washington, D.C. Dulles Intl

Thu 5/28

8:30 pm-2:40 pm

1 stop13h 10m

$565

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Wed 6/10

3:40 pm-10:15 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Wed 7/15

11:20 pm-2:40 pm

1 stop10h 20m

$566

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Sun 6/7

3:40 pm-10:15 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Fri 7/17

11:20 pm-2:40 pm

1 stop10h 20m

$566

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Wed 7/1

3:40 pm-10:15 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Wed 7/15

11:20 pm-2:40 pm

1 stop10h 20m

$566

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/17

Showing 1-10 of 23 results
1
2
3
  • 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.

Cheapflights Insights

Everything you need to know about your flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport

How much does it cost to fly round-trip from London Gatwick Airport to Washington, D.C. Dulles Intl Airport?

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 11h 20m. Fly via Icelandair to get the fastest option. Airlines will cover a distance of 3683 mi.

  • 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
Arlington
Owings Mills
Springfield
Silver Spring
Herndon
Fredericksburg
Hanover
Laurel
Rockville
Upper Marlboro
Linthicum Heights
Manassas
Bowie
Largo
McLean
Clinton
Towson

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.