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Dulles Intl

$486+ 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 11/30. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — IAD
Nov 1 — Nov 81
Sat 11/1
Sat 11/8
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 October 2, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$527
(Kiwi.com)

One-way from

$486
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$788
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. 23% potential increase in price ($222 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in October 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 October 2, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/136:40 pmLGW - IAD
1 stop25h 50mSWISS
Sun 11/168:30 pmIAD - LGW
1 stop16h 20mSWISS
Deal found 10/1$527
This Justfly.com deal was found by Cheapflights users on 10/2. 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 11/2110:40 amLGW - IAD
1 stop15h 20mTAP AIR PORTUGAL
Sun 11/3010:30 pmIAD - LGW
1 stop12h 15mTAP AIR PORTUGAL
Deal found 10/2$528
This Mytrip deal was found by Cheapflights users on 10/2. 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 11/198:50 amLGW - IAD
2 stops14h 40mMultiple Airlines
Sun 11/237:40 pmIAD - LGW
2 stops18h 15mMultiple Airlines
Deal found 10/2$529
This Justfly.com deal was found by Cheapflights users on 10/2. 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 12/1210:30 pmIAD - LGW
1 stop12h 15mTAP AIR PORTUGAL
Deal found 10/2$530
This Kiwi.com deal was found by Cheapflights users on 10/2. 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.
Thu 10/306:40 pmLGW - IAD
1 stop24h 55mSWISS
Thu 11/68:30 pmIAD - LGW
1 stop16h 20mSWISS
Deal found 10/2$531
This Kiwi.com deal was found by Cheapflights users on 10/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/306:40 pmLGW - IAD
1 stop27h 00mSWISS
Wed 11/125:25 pmIAD - LGW
1 stop19h 25mSWISS
Deal found 10/1$532
This SmartFares deal was found by Cheapflights users on 10/2. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/910:40 amLGW - IAD
1 stop33h 35mTAP AIR PORTUGAL
Sat 11/155:30 pmIAD - LGW
1 stop11h 20mTAP AIR PORTUGAL
Deal found 10/2$534
This Mytrip deal was found by Cheapflights users on 10/2. 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 11/208:50 amLGW - IAD
2 stops14h 40mMultiple Airlines
Sun 11/237:40 pmIAD - LGW
2 stops14h 55mMultiple Airlines
Deal found 10/2$535
This Justfly.com deal was found by Cheapflights users on 10/2. 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 11/204:00 pmLGW - IAD
1 stop34h 00mTAP AIR PORTUGAL
Tue 12/25:30 pmIAD - LGW
1 stop11h 20mTAP AIR PORTUGAL
Deal found 10/2$536
This Justfly.com deal was found by Cheapflights users on 10/2. 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 11/204:00 pmLGW - IAD
1 stop34h 00mTAP AIR PORTUGAL
Sun 11/2310:30 pmIAD - LGW
1 stop12h 15mTAP AIR PORTUGAL
Deal found 10/2$537
This Kiwi.com deal was found by Cheapflights users on 10/2. 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 12/52:00 pmLGW - IAD
1 stop22h 35mMultiple Airlines
Mon 12/158:30 amIAD - LGW
1 stop20h 30mMultiple Airlines
Deal found 10/2$539
This Gotogate deal was found by Cheapflights users on 9/30. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/316:40 pmLGW - IAD
1 stop27h 00mSWISS
Fri 11/148:30 pmIAD - LGW
1 stop16h 20mSWISS
Deal found 9/30$542

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 October 2, 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 10/29

11:55 am-7:30 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Wed 12/10

7:40 pm-10:55 am

1 stop10h 15m

$554

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 3/12

4:00 pm-10:00 pm

1 stop34h 00m

Washington, D.C. Dulles Intl

Mon 3/23

6:30 pm-9:50 am

1 stop11h 20m

$590

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 11/18

11:55 am-6:30 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Fri 11/28

7:40 pm-10:55 am

1 stop10h 15m

$590

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 11/18

11:55 am-6:30 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Mon 12/1

7:40 pm-10:55 am

1 stop10h 15m

$590

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Mon 11/24

11:55 am-6:30 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Mon 12/1

7:40 pm-10:55 am

1 stop10h 15m

$590

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 11/20

11:55 am-6:30 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Thu 12/4

7:40 pm-10:55 am

1 stop10h 15m

$590

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 11/20

11:55 am-6:30 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Sat 11/29

7:40 pm-10:55 am

1 stop10h 15m

$590

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Fri 11/21

11:55 am-6:30 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Wed 12/3

7:40 pm-10:55 am

1 stop10h 15m

$590

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Mon 11/24

11:55 am-6:30 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Sat 11/29

7:40 pm-10:55 am

1 stop10h 15m

$590

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Mon 11/24

11:55 am-6:30 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Tue 12/2

7:40 pm-10:55 am

1 stop10h 15m

$590

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/2

Showing 1-10 of 22 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 October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
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 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 far ahead should I book a flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Gatwick to Dulles Intl. Price data was last updated on September 26, 2025.

To ensure you get the cheapest price possible for a flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport, you should look to book at least 54 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, August is the cheapest month in which you can book a flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport (average of $292). Flying from London Gatwick Airport to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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.

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 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.

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

    Currently, August is the cheapest month in which you can book a flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport (average of $292). Flying from London Gatwick Airport to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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
Woodbridge
Arlington
Alexandria
Tysons
Silver Spring
Springfield
Hanover
Gaithersburg
Fredericksburg
Fairfax
Linthicum Heights
Falls Church
Owings Mills
Manassas
Oxon Hill
Laurel
Towson
National Harbor
Dundalk
Waldorf

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