What is the cheapest airline that flies from London Gatwick to Washington, D.C. Dulles Intl?

British Airways and TAP AIR PORTUGAL are the most popular carriers operating from London Gatwick to Washington, D.C. Dulles Intl

What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

The necessary travel and health documents for your Washington, D.C. Dulles Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

£327 Cheap Flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport in 2026

Q: What is the typical price of a round-trip flight between London Gatwick Airport and Washington, D.C. Dulles Intl Airport?

Prices are currently low for flights on this route. Typical prices usually range from £553 to £769. The lowest price recently found on this route was £439.

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Find the cheapest flights from London Gatwick Airport to Washington, D.C.

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

15:40 - 19:20

LGW

IAD

32h 40m

1 stop

20:40 - 10:55

IAD

LGW

10h 15m

1 stop

£439Icelandair

Fri, 23 Oct - Sat, 31 Oct

11:55 - 18:30

LGW

IAD

11h 35m

1 stop

19:40 - 10:55

IAD

LGW

10h 15m

1 stop

£439Icelandair

Sun, 13 Dec - Thu, 7 Jan

15:40 - 22:15

LGW

IAD

11h 35m

1 stop

20:30 - 11:45

IAD

LGW

10h 15m

1 stop

£440Icelandair

Fri, 28 Aug - Sat, 5 Sep

11:55 - 19:30

LGW

IAD

11h 35m

1 stop

19:40 - 10:55

IAD

LGW

10h 15m

1 stop

£441Icelandair

Sat, 31 Oct - Sat, 7 Nov

15:40 - 22:15

LGW

IAD

11h 35m

1 stop

23:20 - 14:40

IAD

LGW

10h 20m

1 stop

£442Icelandair

Fri, 28 Aug - Sun, 18 Oct

11:55 - 18:30

LGW

IAD

11h 35m

1 stop

19:40 - 10:55

IAD

LGW

10h 15m

1 stop

£443Icelandair

Mon, 14 Dec - Thu, 7 Jan

14:00 - 19:09

LGW

IAD

34h 09m

1 stop

20:00 - 10:00

IAD

LGW

33h 00m

1 stop

£445Multiple Airlines

Fri, 9 Oct - Wed, 14 Oct

13:00 - 19:20

LGW

IAD

11h 20m

1 stop

20:30 - 14:40

IAD

LGW

13h 10m

1 stop

£446Icelandair

Thu, 3 Sep - Mon, 7 Sep

10:40 - 20:35

LGW

IAD

14h 55m

1 stop

22:30 - 15:45

IAD

LGW

12h 15m

1 stop

£447TAP AIR PORTUGAL

Sun, 22 Nov - Sun, 29 Nov

11:55 - 19:30

LGW

IAD

11h 35m

1 stop

19:40 - 10:55

IAD

LGW

10h 15m

1 stop

£448Icelandair

Thu, 29 Oct - Thu, 19 Nov

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Icelandair flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport

Our best Icelandair deals on London Gatwick Airport to Washington, D.C. Dulles Intl Airport flight tickets

Icelandair

23 Oct

LGW15:40London Gatwick

32h 40m

1 stop

IAD19:20Washington, D.C. Dulles Intl

31 Oct

IAD20:40Washington, D.C. Dulles Intl

10h 15m

1 stop

LGW10:55London Gatwick

£439

Icelandair

13 Dec

LGW11:55London Gatwick

11h 35m

1 stop

IAD18:30Washington, D.C. Dulles Intl

7 Jan

IAD19:40Washington, D.C. Dulles Intl

10h 15m

1 stop

LGW10:55London Gatwick

£439

Icelandair

28 Aug

LGW15:40London Gatwick

11h 35m

1 stop

IAD22:15Washington, D.C. Dulles Intl

5 Sept

IAD20:30Washington, D.C. Dulles Intl

10h 15m

1 stop

LGW11:45London Gatwick

£440

SWISS flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport

Our best SWISS deals on London Gatwick Airport to Washington, D.C. Dulles Intl Airport flight tickets

SWISS

20 Jul

LGW09:25London Gatwick

12h 20m

1 stop

IAD16:45Washington, D.C. Dulles Intl

3 Aug

IAD20:20Washington, D.C. Dulles Intl

16h 30m

1 stop

LGW17:50London Gatwick

£545

SWISS

20 Jul

LGW09:25London Gatwick

12h 20m

1 stop

IAD16:45Washington, D.C. Dulles Intl

26 Jul

IAD20:20Washington, D.C. Dulles Intl

16h 30m

1 stop

LGW17:50London Gatwick

£551

SWISS

20 Jul

LGW09:25London Gatwick

12h 20m

1 stop

IAD16:45Washington, D.C. Dulles Intl

3 Aug

IAD20:20Washington, D.C. Dulles Intl

16h 30m

1 stop

LGW17:50London Gatwick

£569

momondo Fare Finder

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

Fri 23/10

15:40-19:20

1 stop32h 40m

Washington, D.C. Dulles Intl

Sat 31/10

20:40-10:55

1 stop10h 15m

£439

Fastest return journey

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Sun 13/12

11:55-18:30

1 stop11h 35m

Washington, D.C. Dulles Intl

Thu 7/1

19:40-10:55

1 stop10h 15m

£439

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Fri 28/8

15:40-22:15

1 stop11h 35m

Washington, D.C. Dulles Intl

Sat 5/9

20:30-11:45

1 stop10h 15m

£440

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Sat 31/10

11:55-19:30

1 stop11h 35m

Washington, D.C. Dulles Intl

Sat 7/11

19:40-10:55

1 stop10h 15m

£441

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Fri 28/8

15:40-22:15

1 stop11h 35m

Washington, D.C. Dulles Intl

Sun 18/10

23:20-14:40

1 stop10h 20m

£442

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Mon 14/12

11:55-18:30

1 stop11h 35m

Washington, D.C. Dulles Intl

Thu 7/1

19:40-10:55

1 stop10h 15m

£443

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Fri 9/10

14:00-19:09

1 stop34h 09m

Washington, D.C. Dulles Intl

Wed 14/10

20:00-10:00

1 stop33h 00m

£445

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 3/9

13:00-19:20

1 stop11h 20m

Washington, D.C. Dulles Intl

Mon 7/9

20:30-14:40

1 stop13h 10m

£446

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Sun 22/11

10:40-20:35

1 stop14h 55m

Washington, D.C. Dulles Intl

Sun 29/11

22:30-15:45

1 stop12h 15m

£447

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 29/10

11:55-19:30

1 stop11h 35m

Washington, D.C. Dulles Intl

Thu 19/11

19:40-10:55

1 stop10h 15m

£448

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from London Gatwick Airport to Washington, D.C. Dulles Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the typical price of a round-trip flight between London Gatwick Airport and Washington, D.C. Dulles Intl Airport?

What is the cheapest month to fly to Washington, D.C. Dulles Intl Airport?

The month of June is, on average, the cheapest month to fly to Washington, D.C. Dulles Intl Airport from London Gatwick Airport, with most prices found around £0. If you aren’t able to travel during the month of June, then book flights to Washington, D.C. Dulles Intl Airport from London Gatwick Airport during April instead. Flights to Washington, D.C. Dulles Intl Airport in April, while not as cheap as those in June, still average around £0.

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

According to our data, Friday is the cheapest day to fly to Washington, D.C. Dulles Intl Airport from London Gatwick Airport. The lowest ticket price found for a Friday departure recently was £572. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. On the other hand, Sunday is the most expensive day to depart from London Gatwick Airport because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £615.

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

The cheapest time of day to fly to Washington, D.C. Dulles Intl Airport is at midday when flights can be purchased for as low as £574. In contrast, the most expensive time of day to depart to Washington, D.C. Dulles Intl Airport is in the morning when prices are around £586.

When to book flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from London Gatwick Airport to Washington, D.C. Dulles Intl Airport according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap London Gatwick Airport to Washington, D.C. Dulles Intl Airport (LGW to IAD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport

Fastest flight time	11h 35m
Direct flights	None

The fastest flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport takes 11h 35m

There are no direct flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport. There are no popular flight routes from London Gatwick Airport to Washington, D.C. Dulles Intl Airport.

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Frequently asked questions about flying from London Gatwick Airport to Washington, D.C. Dulles Intl Airport

How far is London Gatwick to Washington, D.C. Dulles Intl by plane?
The distance between London Gatwick and Washington, D.C. Dulles Intl is about 3682.8 mi. In terms of flight time, this usually takes a little over 11h 35m.
When did momondo last update prices for flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport?
Prices for flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport are refreshed on a daily basis.
How many operators does momondo search for flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport?
There is 1 operator available for flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport as of July 2026.
How old do you have to be to fly from London Gatwick Airport to Washington, D.C. Dulles Intl Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Gatwick Airport to Washington, D.C. Dulles Intl Airport.
What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?
The necessary travel and health documents for your Washington, D.C. Dulles Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from London Gatwick Airport to Washington, D.C. Dulles Intl Airport?
Based on momondo bookings for this flight route, the most popular airline on flight routes from London Gatwick Airport to Washington, D.C. Dulles Intl Airport is Icelandair (100% of total bookings).

Best airlines flying from London Gatwick Airport to Washington, D.C. Dulles Intl Airport

Compare and see reviews for airlines that fly from London Gatwick Airport to Washington, D.C. Dulles Intl Airport with momondo

Airline	Rating	Free Cancellation	Price
Icelandair	PriceFrom £329	Free Cancellation	Rating 7.0 702 reviews		Search Icelandair flights

Alexandria

College Park

Springfield

Fairfax

Arlington

Gettysburg

Linthicum Heights

National Harbor

Front Royal

Winchester

Ellicott City

Cambridge

Glen Burnie

Westminster

Laurel

Lutherville Timonium

Lexington Park

Leesburg

Owings Mills

Woodbridge

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Cheap flights from London Gatwick Airport to Washington, D.C. from £327

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Icelandair flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport

Our best Icelandair deals on London Gatwick Airport to Washington, D.C. Dulles Intl Airport flight tickets

SWISS flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport

Our best SWISS deals on London Gatwick Airport to Washington, D.C. Dulles Intl Airport flight tickets

momondo Fare Finder

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.

See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from London Gatwick Airport to Washington, D.C. Dulles Intl Airport

What is the typical price of a round-trip flight between London Gatwick Airport and Washington, D.C. Dulles Intl Airport?

What is the cheapest month to fly to Washington, D.C. Dulles Intl Airport?

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

What is the cheapest airline that flies from London Gatwick to Washington, D.C. Dulles Intl?

When to book flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport

Cheap London Gatwick Airport to Washington, D.C. Dulles Intl Airport (LGW to IAD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport

Fastest flight time

Direct flights

Frequently asked questions about flying from London Gatwick Airport to Washington, D.C. Dulles Intl Airport

Best airlines flying from London Gatwick Airport to Washington, D.C. Dulles Intl Airport

Compare and see reviews for airlines that fly from London Gatwick Airport to Washington, D.C. Dulles Intl Airport with momondo

Travelling to a place near Washington, D.C.?

Why use momondo?

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