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Cheap flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport from £411

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 25/5. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — IAD
2 Jun — 9 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Gatwick to Dulles Intl

Enter your travel dates to find the best prices.

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 3 May 2026.

Fri 20/1111:55
LGW
-
IAD
1 stop11h 35m
Icelandair
Wed 25/1119:40
IAD
-
LGW
1 stop10h 15m
Icelandair
Deal found 29/4£420
Fri 6/1111:55
LGW
-
IAD
1 stop11h 35m
Icelandair
Tue 10/1119:40
IAD
-
LGW
1 stop10h 15m
Icelandair
Deal found 1/5£424
Sat 21/1111:55
LGW
-
IAD
1 stop11h 35m
Icelandair
Thu 26/1119:40
IAD
-
LGW
1 stop10h 15m
Icelandair
Deal found 29/4£426
Thu 1/1015:40
LGW
-
IAD
1 stop32h 40m
Icelandair
Sun 4/1023:20
IAD
-
LGW
1 stop10h 20m
Icelandair
Deal found 29/4£427
Thu 29/1011:55
LGW
-
IAD
1 stop11h 35m
Icelandair
Sun 8/1119:40
IAD
-
LGW
1 stop10h 15m
Icelandair
Deal found 3/5£428
Mon 16/1111:55
LGW
-
IAD
1 stop11h 35m
Icelandair
Sun 29/1119:40
IAD
-
LGW
1 stop10h 15m
Icelandair
Deal found 3/5£430
Sun 4/1015:40
LGW
-
IAD
1 stop11h 35m
Icelandair
Sun 18/1023:20
IAD
-
LGW
1 stop10h 20m
Icelandair
Deal found 29/4£431
Mon 23/1111:55
LGW
-
IAD
1 stop11h 35m
Icelandair
Mon 7/1219:40
IAD
-
LGW
1 stop10h 15m
Icelandair
Deal found 2/5£434
Wed 7/1015:40
LGW
-
IAD
1 stop11h 35m
Icelandair
Mon 12/1020:30
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 1/5£434
Thu 8/1015:40
LGW
-
IAD
1 stop32h 40m
Icelandair
Tue 13/1020:30
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 1/5£436
Mon 1/615:40
LGW
-
IAD
1 stop32h 40m
Icelandair
Wed 30/920:30
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 2/5£438
Tue 24/1111:55
LGW
-
IAD
1 stop11h 35m
Icelandair
Tue 1/1219:40
IAD
-
LGW
1 stop10h 15m
Icelandair
Deal found 30/4£439

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 3 May 2026.

Round-trip from

£427

One-way from

£411

Popular in

July

Cheapest in

November

Average price

£420
Icelandair
  • Icelandair
  • 1/10-4/10
  • 2 total stops
  • 43h 00m total
  • London to Washington, D.C.
Search Deals
25/5
  • 25/5
  • 1 total stop
  • 30h 16m total
  • London to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 23% potential increase in price (£120 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£15 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 3 May 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 return flight

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 16/6

15:40-19:20

1 stop32h 40m

Washington, D.C. Dulles Intl

Fri 11/9

23:20-11:45

1 stop31h 25m

£479
Fastest return journey

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Mon 1/6

10:25-19:35

1 stop14h 10m

Washington, D.C. Dulles Intl

Wed 10/6

21:45-16:00

1 stop13h 15m

£548

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Mon 1/6

10:25-22:56

2 stops17h 31m

Washington, D.C. Dulles Intl

Wed 10/6

21:45-16:00

1 stop13h 15m

£552

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 19/5

15:40-19:20

1 stop32h 40m

Washington, D.C. Dulles Intl

Wed 27/5

20:30-11:45

1 stop10h 15m

£622

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 18/6

15:40-19:20

1 stop32h 40m

Washington, D.C. Dulles Intl

Wed 24/6

23:20-14:40

1 stop10h 20m

£630

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 2/7

13:00-19:20

1 stop11h 20m

Washington, D.C. Dulles Intl

Sun 12/7

23:20-11:45

1 stop31h 25m

£648

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 9/6

10:35-23:14

2 stops17h 39m

Washington, D.C. Dulles Intl

Tue 7/7

21:45-16:00

1 stop13h 15m

£712

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 18/6

15:40-19:20

1 stop32h 40m

Washington, D.C. Dulles Intl

Sat 27/6

20:30-11:45

1 stop10h 15m

£722

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Fri 19/6

10:25-21:04

2 stops15h 39m

Washington, D.C. Dulles Intl

Sat 27/6

19:59-16:00

2 stops15h 01m

£776

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Wed 1/7

17:00-11:48

2 stops23h 48m

Washington, D.C. Dulles Intl

Fri 10/7

18:15-09:25

1 stop10h 10m

£777

Flights are sorted by cheapest return flights first.

Deals found on 3/5

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
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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 return 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 for a return flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport?

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated 3 May 2026.
See what other customers who have flown with Icelandair from London Gatwick Airport to Washington, D.C. Dulles Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Icelandair
7.0
Good
650 reviews
Check prices

Comfort

6.9

Boarding

7.2

Entertainment

6.9

Food

6.2

Crew

8.0

Overall

7.0

Reviews

1 / 20
10.0
Excellent

Ásmundur,Apr 2026

CDG - KEF

The flight was uneventfull and ahead of schedule. The crew was attentive and the service good.
Icelandair
7.0
Good
650 reviews
Icelandair
7.0
Good
650 reviews
Check prices

Comfort

6.9

Boarding

7.2

Entertainment

6.9

Food

6.2

Crew

8.0

Overall

7.0

Reviews

1 / 20
10.0
Excellent

Ásmundur,Apr 2026

CDG - KEF

The flight was uneventfull and ahead of schedule. The crew was attentive and the service good.

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?

    For as low as £548, Icelandair can have you in Washington, D.C. Dulles Intl Airport from London Gatwick Airport in 14h 10m. The distance from London Gatwick Airport to Washington, D.C. Dulles Intl Airport is about 3683 mi. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from London Gatwick Airport to Washington, D.C. Dulles Intl Airport round-trip?

    Our cheapest airline available from London Gatwick Airport to Washington, D.C. Dulles Intl Airport is Icelandair. Our recent data shows that you can find tickets from as low as £369 on this airline. Icelandair is 31% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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 holiday 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

Travelling 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
Silver Spring
Hanover
Oxon Hill
Gaithersburg
Woodbridge
Arlington
Alexandria
Sterling

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Gatwick to Dulles Intl

Discover the top airline that operate flights from Gatwick to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 3 May 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£369Average£582FlexibilityNo cancel feeOn-time76%
Search Icelandair flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Gatwick to Dulles Intl?

When you search for this flight from Gatwick to Dulles Intl, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Gatwick to Dulles Intl?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Gatwick to Dulles Intl.

Can Cheapflights find flights from Gatwick to Dulles Intl with no change fees?

Yes! Cheapflights helps users easily find flights from Gatwick to Dulles Intl with no change fees.

Can Cheapflights notify me if prices for flights from Gatwick to Dulles Intl become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Dulles Intl from Gatwick today and book when prices fit your budget.

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