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Dulles Intl

$496+ 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 1/7. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — IAD
Dec 19 — Dec 261
Fri 12/19
Fri 12/26
1 adult, Economy
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Cheap 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 November 19, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$609
(Gotogate)

One-way from

$496
(Kiwi.com)

Popular in

July

Cheapest in

November

Average price

$522
Provider with most accurate pricing for London Gatwick-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for London Gatwick-Washington, D.C. Dulles Intl flights.
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From London Gatwick to Washington, D.C. Dulles Intl
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One-way flight from London Gatwick to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 25% potential increase in price ($240 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($29 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find 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 November 19, 2025.

This Gotogate deal was found by Cheapflights users on 11/18. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1211:55 amLGW - IAD
1 stop11h 35mIcelandair
Sun 12/147:40 pmIAD - LGW
1 stop10h 15mIcelandair
Deal found 11/18$609
This The Travel House deal was found by Cheapflights users on 11/18. 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.
Thu 12/411:55 amLGW - IAD
1 stop11h 35mIcelandair
Sun 12/147:40 pmIAD - LGW
1 stop10h 15mIcelandair
Deal found 11/18$610
This The Travel House deal was found by Cheapflights users on 11/18. 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.
Wed 12/311:55 amLGW - IAD
1 stop11h 35mIcelandair
Sat 12/67:40 pmIAD - LGW
1 stop10h 15mIcelandair
Deal found 11/18$612
This Cheapflightsfares deal was found by Cheapflights users on 11/18. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/911:55 amLGW - IAD
1 stop11h 35mIcelandair
Sun 12/147:40 pmIAD - LGW
1 stop10h 15mIcelandair
Deal found 11/18$613
This Justfly.com deal was found by Cheapflights users on 11/19. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/510:40 amLGW - IAD
1 stop15h 20mTAP AIR PORTUGAL
Wed 1/710:30 pmIAD - LGW
1 stop11h 35mTAP AIR PORTUGAL
Deal found 11/19$614
This Justfly.com deal was found by Cheapflights users on 11/19. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/510:40 amLGW - IAD
1 stop15h 20mTAP AIR PORTUGAL
Fri 1/910:30 pmIAD - LGW
1 stop12h 15mTAP AIR PORTUGAL
Deal found 11/19$615
This Netflights deal was found by Cheapflights users on 11/19. 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 Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1211:55 amLGW - IAD
1 stop11h 35mIcelandair
Mon 12/157:40 pmIAD - LGW
1 stop10h 15mIcelandair
Deal found 11/19$618
This Gotogate deal was found by Cheapflights users on 11/18. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/311:55 amLGW - IAD
1 stop11h 35mIcelandair
Wed 12/107:40 pmIAD - LGW
1 stop10h 15mIcelandair
Deal found 11/18$619
This Justfly.com deal was found by Cheapflights users on 11/19. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/44:00 pmLGW - IAD
1 stop34h 00mTAP AIR PORTUGAL
Thu 1/85:30 pmIAD - LGW
1 stop11h 20mTAP AIR PORTUGAL
Deal found 11/19$621
This FlightHub deal was found by Cheapflights users on 11/18. 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.
Thu 12/411:55 amLGW - IAD
1 stop11h 35mIcelandair
Wed 12/107:40 pmIAD - LGW
1 stop10h 15mIcelandair
Deal found 11/18$622
This Justfly.com deal was found by Cheapflights users on 11/17. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2511:55 amLGW - IAD
1 stop11h 35mIcelandair
Tue 12/167:40 pmIAD - LGW
1 stop10h 15mIcelandair
Deal found 11/17$623
This oojo deal was found by Cheapflights users on 11/18. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/511:55 amLGW - IAD
1 stop11h 35mIcelandair
Sun 12/77:40 pmIAD - LGW
1 stop10h 15mIcelandair
Deal found 11/18$624

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 November 19, 2025.
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

Wed 12/3

4:35 pm-3:15 pm

1 stop27h 40m

Washington, D.C. Dulles Intl

Mon 1/12

5:30 pm-9:50 am

1 stop11h 20m

$645

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Mon 1/12

11:55 am-6:30 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Fri 1/16

7:40 pm-10:55 am

1 stop10h 15m

$646

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 2/24

9:20 pm-9:00 pm

2 stops28h 40m

Washington, D.C. Dulles Intl

Tue 3/10

6:30 pm-3:45 pm

1 stop17h 15m

$662

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 12/4

10:10 am-9:00 pm

2 stops39h 50m

Washington, D.C. Dulles Intl

Mon 12/8

5:30 pm-3:45 pm

1 stop17h 15m

$666

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 1/20

11:55 am-6:30 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Fri 1/30

7:40 pm-10:55 am

1 stop10h 15m

$680

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Fri 1/23

11:55 am-6:30 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Tue 1/27

7:40 pm-10:55 am

1 stop10h 15m

$680

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 1/22

11:55 am-6:30 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Sun 1/25

7:40 pm-10:55 am

1 stop10h 15m

$680

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Fri 3/13

10:40 am-10:00 pm

1 stop15h 20m

Washington, D.C. Dulles Intl

Sun 3/15

11:30 pm-9:50 am

1 stop30h 20m

$680

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 1/15

11:55 am-6:30 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Mon 1/19

7:40 pm-10:55 am

1 stop10h 15m

$680

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Sat 1/24

11:55 am-6:30 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Thu 1/29

7:40 pm-10:55 am

1 stop10h 15m

$680

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/18

Showing 1-10 of 23 results
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Compare providers for flights from Gatwick 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 Gatwick to Dulles Intl in November.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on London Gatwick Airport-Washington, D.C. Dulles Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on London Gatwick Airport-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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

What is the cheapest month to book a flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport?

Currently, February is the cheapest month in which you can book a flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport (average of $456). Flying from London Gatwick Airport to Washington, D.C. Dulles Intl Airport in August is currently the most expensive (average of $823). 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.

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 35m. Fly via TAP AIR PORTUGAL or Icelandair 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.

  • What is the cheapest month to book a flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport?

    Currently, February is the cheapest month in which you can book a flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport (average of $456). Flying from London Gatwick Airport to Washington, D.C. Dulles Intl Airport in August is currently the most expensive (average of $823). 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.

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
Woodbridge
Arlington
Owings Mills
Springfield
Hanover
Silver Spring
Fairfax
Fredericksburg
Falls Church
Linthicum Heights
Manassas
Laurel
Towson
National Harbor
Waldorf
Bowie
Largo
McLean

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