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Cheap flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport from £374

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 4/5. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — IAD
3 Apr — 10 Apr1
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 4 March 2026.

Fri 2/1009:25
LGW
-
IAD
1 stop12h 20m
SWISS
Sat 17/1020:20
IAD
-
LGW
1 stop16h 30m
SWISS
Deal found 3/3£402
Tue 14/415:40
LGW
-
IAD
1 stop32h 40m
Icelandair
Wed 8/723:20
IAD
-
LGW
1 stop10h 20m
Icelandair
Deal found 1/3£404
Mon 4/515:40
LGW
-
IAD
1 stop32h 40m
Icelandair
Mon 11/520:30
IAD
-
LGW
1 stop10h 15m
Icelandair
Deal found 3/3£405
Mon 20/415:40
LGW
-
IAD
1 stop32h 40m
Icelandair
Thu 30/420:30
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 3/3£407
Sat 18/415:40
LGW
-
IAD
1 stop32h 40m
Icelandair
Wed 3/623:20
IAD
-
LGW
1 stop10h 20m
Icelandair
Deal found 2/3£408
Thu 7/513:00
LGW
-
IAD
1 stop11h 20m
Icelandair
Mon 18/520:30
IAD
-
LGW
1 stop10h 15m
Icelandair
Deal found 1/3£409
Thu 16/418:35
LGW
-
IAD
1 stop27h 10m
SWISS
Thu 23/420:20
IAD
-
LGW
1 stop31h 05m
SWISS
Deal found 3/3£410
Tue 5/510:35
LGW
-
IAD
1 stop14h 00m
Delta
Tue 12/521:45
IAD
-
LGW
1 stop13h 15m
Delta
Deal found 2/3£410
Mon 27/415:40
LGW
-
IAD
1 stop32h 40m
Icelandair
Wed 6/520:30
IAD
-
LGW
1 stop10h 15m
Icelandair
Deal found 3/3£411
Thu 16/415:40
LGW
-
IAD
1 stop32h 40m
Icelandair
Sun 31/523:20
IAD
-
LGW
1 stop10h 20m
Icelandair
Deal found 2/3£413
Thu 14/513:00
LGW
-
IAD
1 stop11h 20m
Icelandair
Sun 17/523:20
IAD
-
LGW
1 stop10h 20m
Icelandair
Deal found 4/3£415
Sat 2/515:40
LGW
-
IAD
1 stop32h 40m
Icelandair
Sat 16/520:30
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 3/3£417

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 4 March 2026.

Round-trip from

£404

One-way from

£374

Popular in

July

Cheapest in

November

Average price

£556
Icelandair
  • Icelandair
  • 14/4-8/7
  • 2 total stops
  • 43h 00m total
  • London to Washington, D.C.
Search Deals
SWISS
  • SWISS
  • 4/5
  • 1 total stop
  • 12h 20m total
  • London to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 22% potential increase in price (£122 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£17 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 4 March 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

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Mon 4/5

10:25-19:35

1 stop14h 10m

Washington, D.C. Dulles Intl

Mon 11/5

21:45-16:00

1 stop13h 15m

£411

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Mon 8/6

10:25-19:35

1 stop14h 10m

Washington, D.C. Dulles Intl

Fri 3/7

21:45-16:00

1 stop13h 15m

£460

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Sat 6/6

10:25-19:35

1 stop14h 10m

Washington, D.C. Dulles Intl

Sat 4/7

21:45-16:00

1 stop13h 15m

£511

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Wed 10/6

10:25-19:35

1 stop14h 10m

Washington, D.C. Dulles Intl

Sat 11/7

18:15-09:20

1 stop10h 05m

£514

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Sun 19/4

14:00-14:18

2 stops29h 18m

Washington, D.C. Dulles Intl

Sun 26/4

11:17-10:00

1 stop17h 43m

£542

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Wed 10/6

15:40-22:15

1 stop11h 35m

Washington, D.C. Dulles Intl

Sat 11/7

20:30-11:45

1 stop10h 15m

£600

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 2/4

10:25-19:35

1 stop14h 10m

Washington, D.C. Dulles Intl

Tue 14/4

18:15-09:25

1 stop10h 10m

£603

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Fri 17/4

07:00-19:50

1 stop17h 50m

Washington, D.C. Dulles Intl

Thu 23/4

13:20-09:55

1 stop15h 35m

£665

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Fri 17/4

15:25-15:30

2 stops29h 05m

Washington, D.C. Dulles Intl

Fri 24/4

17:00-19:00

2 stops21h 00m

£671

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 19/3

06:25-20:20

1 stop17h 55m

Washington, D.C. Dulles Intl

Wed 1/4

13:20-13:10

1 stop18h 50m

£876

Flights are sorted by cheapest return flights first.

Deals found on 27/2

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

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

What’s the top stopover airport for flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport?

Share of one-stop return flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Reykjavik (KEF) – chosen by Cheapflights users on 92% of one-stop itineraries from London Gatwick Airport to Washington, D.C. Dulles Intl Airport on Cheapflights.

What’s the cheapest stopover airport for flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport?

Average return fare for one-stop flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Zurich (ZRH) is the most affordable one-stop option, with an average return flight price of £547.

What’s the fastest stopover option from London Gatwick Airport to Washington, D.C. Dulles Intl Airport?

Shortest average travel time for one-stop one-way flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Reykjavik (KEF) have the shortest average one-way travel time for one-stop routes: 11h 30m.

Which airport typically offers the quickest stopover for flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport?

Average stopover duration for one-stop one-way flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Reykjavik (KEF) offer the fastest connection on this route, with an average stopover time of 1h 34m.

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 4 March 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
7.1
Good
617 reviews
Check prices

Overall

7.1

Food

6.2

Crew

8.1

Boarding

7.2

Entertainment

7.0

Comfort

7.0

Reviews

1 / 20
8.0
Excellent

Dmitry,Oct 2025

KEF - EWR

It was a nice experience, the plane was clean and the crew was friendly. The boarding process went smoothly and there were no delays.
Icelandair
7.1
Good
617 reviews
Icelandair
7.1
Good
617 reviews
Check prices

Overall

7.1

Food

6.2

Crew

8.1

Boarding

7.2

Entertainment

7.0

Comfort

7.0

Reviews

1 / 20
8.0
Excellent

Dmitry,Oct 2025

KEF - EWR

It was a nice experience, the plane was clean and the crew was friendly. The boarding process went smoothly and there were no delays.

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 £411, Delta 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.

  • 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 £389 on this airline. Icelandair is 29% 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
Woodbridge
Arlington
Alexandria
Sterling
College Park

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 4 March 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£389Average£632FlexibilityNo 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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