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Cheap flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport from £412

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 23/9. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — IAD
17 Mai — 24 Mai1
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 17 April 2026.

Do 30/413:00
LGW
-
IAD
1 stop11h 20m
Icelandair
Sa 16/520:30
IAD
-
LGW
1 stop10h 15m
Icelandair
Deal found 17/4£416
Do 14/513:00
LGW
-
IAD
1 stop11h 20m
Icelandair
Mo 1/620:30
IAD
-
LGW
1 stop10h 15m
Icelandair
Deal found 15/4£441
Mi 14/1015:40
LGW
-
IAD
1 stop11h 35m
Icelandair
Mi 11/1119:40
IAD
-
LGW
1 stop10h 15m
Icelandair
Deal found 13/4£449
Mi 7/1015:40
LGW
-
IAD
1 stop11h 35m
Icelandair
Mo 12/1020:30
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 14/4£452
Mi 30/915:40
LGW
-
IAD
1 stop32h 40m
Icelandair
Mi 7/1020:30
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 14/4£453
Mi 30/915:40
LGW
-
IAD
1 stop32h 40m
Icelandair
Mi 14/1020:30
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 16/4£454
Di 28/413:00
LGW
-
IAD
1 stop11h 20m
Icelandair
Mo 4/520:30
IAD
-
LGW
1 stop10h 15m
Icelandair
Deal found 17/4£458
Mi 23/915:40
LGW
-
IAD
1 stop32h 40m
Icelandair
Mi 7/1020:30
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 16/4£459
Fr 15/515:40
LGW
-
IAD
1 stop11h 35m
Icelandair
So 24/523:20
IAD
-
LGW
1 stop10h 20m
Icelandair
Deal found 16/4£460
Mi 8/715:40
LGW
-
IAD
1 stop11h 35m
Icelandair
Mi 15/720:30
IAD
-
LGW
1 stop10h 15m
Icelandair
Deal found 15/4£461
Do 7/513:00
LGW
-
IAD
1 stop11h 20m
Icelandair
Di 12/520:30
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 13/4£461
So 31/515:40
LGW
-
IAD
1 stop32h 40m
Icelandair
So 7/623:20
IAD
-
LGW
1 stop31h 25m
Icelandair
Deal found 16/4£462

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 17 April 2026.

Round-trip from

£441

One-way from

£412

Popular in

July

Cheapest in

November

Average price

£521
Icelandair
  • Icelandair
  • 14/5-1/6
  • 2 total stops
  • 21h 35m total
  • London to Washington, D.C.
Search Deals
23/9
  • 23/9
  • 2 total stops
  • 18h 25m total
  • London to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 23% potential increase in price (£124 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 April 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 17 April 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

Mi 7/10

15:40-22:15

1 stop11h 35m

Washington, D.C. Dulles Intl

Mo 12/10

20:30-14:40

1 stop13h 10m

£485

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Do 10/9

13:00-19:20

1 stop11h 20m

Washington, D.C. Dulles Intl

So 20/9

20:30-14:40

1 stop13h 10m

£492

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Do 10/9

13:00-19:20

1 stop11h 20m

Washington, D.C. Dulles Intl

Sa 26/9

20:30-14:40

1 stop13h 10m

£495

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Sa 5/9

15:40-22:15

1 stop11h 35m

Washington, D.C. Dulles Intl

So 27/9

20:30-14:40

1 stop13h 10m

£495
Fastest return journey

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Do 7/5

13:00-19:20

1 stop11h 20m

Washington, D.C. Dulles Intl

Mo 11/5

20:30-11:45

1 stop10h 15m

£495

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Mo 27/4

10:25-23:03

2 stops17h 38m

Washington, D.C. Dulles Intl

Di 5/5

18:15-16:00

1 stop16h 45m

£542

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Mi 20/5

10:25-22:56

2 stops17h 31m

Washington, D.C. Dulles Intl

Di 26/5

21:45-16:00

1 stop13h 15m

£548

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Fr 21/8

10:25-19:35

1 stop14h 10m

Washington, D.C. Dulles Intl

Fr 28/8

18:15-09:25

1 stop10h 10m

£558

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Di 5/5

10:35-19:35

1 stop14h 00m

Washington, D.C. Dulles Intl

Mo 1/6

21:45-16:00

1 stop13h 15m

£558

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Di 1/9

10:35-19:35

1 stop14h 00m

Washington, D.C. Dulles Intl

Mo 14/9

18:15-09:40

1 stop10h 25m

£560

Flights are sorted by cheapest return flights first.

Deals found on 13/4

Showing 1-10 of 22 resultsSorted by cheapest first
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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 88% 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.

Casablanca (CMN) is the most affordable one-stop option, with an average return flight price of £542.

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 31m.

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 33m.

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 17 April 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
634 reviews
Check prices

Entertainment

6.9

Food

6.2

Crew

8.0

Boarding

7.2

Comfort

6.9

Overall

7.0

Reviews

1 / 20
2.0
Mediocre

Bruce,Mar 2026

BCN - KEF

The airline is charging everything. Drink, meal and ear plug for watching entertainment. This was 4 hours 40 minutes flight.
Icelandair
7.0
Good
634 reviews
Icelandair
7.0
Good
634 reviews
Check prices

Entertainment

6.9

Food

6.2

Crew

8.0

Boarding

7.2

Comfort

6.9

Overall

7.0

Reviews

1 / 20
2.0
Mediocre

Bruce,Mar 2026

BCN - KEF

The airline is charging everything. Drink, meal and ear plug for watching entertainment. This was 4 hours 40 minutes flight.

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 £485, Icelandair can have you in Washington, D.C. Dulles Intl Airport from London Gatwick Airport in 11h 35m. 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 £370 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 17 April 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£370Average£641FlexibilityNo 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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