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Cheap flights from London Gatwick Airport to Washington, D.C. from £202

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Gatwick Airport to Washington, D.C. departing on 22/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from London Gatwick Airport to Washington, D.C.

Cheap return flights

Enter your travel dates to find the best prices.
British Airways Logo
11:20 - 23:34LGW-DCA
16h 14m1 stop
British Airways Logo
11:30 - 07:30DCA-LGW
16h 00m1 stop
£469British Airways
Find Deal
Mon, 9 Mar - Tue, 17 Mar
Icelandair Logo
11:55 - 18:40LGW-BWI
11h 45m1 stop
Icelandair Logo
19:40 - 10:55BWI-LGW
10h 15m1 stop
£470Icelandair
Find Deal
Fri, 9 Jan - Fri, 16 Jan
American Airlines Logo
11:20 - 19:36LGW-DCA
37h 16m2 stops
American Airlines Logo
17:24 - 07:30DCA-LGW
33h 06m2 stops
£470American Airlines
Find Deal
Thu, 15 Jan - Sun, 18 Jan
Multiple Airlines Logo
14:00 - 11:28LGW-IAD
26h 28m2 stops
Multiple Airlines Logo
09:33 - 10:05IAD-LGW
19h 32m1 stop
£470Multiple Airlines
Find Deal
Sat, 10 Jan - Sat, 17 Jan
Multiple Airlines Logo
14:10 - 23:47LGW-BWI
14h 37m1 stop
Multiple Airlines Logo
11:30 - 10:05BWI-LGW
17h 35m1 stop
£471Multiple Airlines
Find Deal
Sun, 11 Jan - Sat, 17 Jan
TAP AIR PORTUGAL Logo
11:00 - 15:35LGW-IAD
32h 35m2 stops
TAP AIR PORTUGAL Logo
18:30 - 09:50IAD-LGW
11h 20m1 stop
£472TAP AIR PORTUGAL
Find Deal
Mon, 9 Mar - Tue, 17 Mar
Icelandair Logo
11:55 - 18:40LGW-BWI
11h 45m1 stop
Icelandair Logo
19:40 - 10:55BWI-LGW
10h 15m1 stop
£472Icelandair
Find Deal
Thu, 29 Jan - Wed, 4 Feb
TAP AIR PORTUGAL Logo
10:45 - 21:00LGW-IAD
15h 15m2 stops
TAP AIR PORTUGAL Logo
18:30 - 15:45IAD-LGW
17h 15m1 stop
£473TAP AIR PORTUGAL
Find Deal
Fri, 6 Mar - Mon, 9 Mar
British Airways Logo
11:20 - 23:25LGW-DCA
17h 05m1 stop
British Airways Logo
08:20 - 07:30DCA-LGW
18h 10m1 stop
£473British Airways
Find Deal
Wed, 14 Jan - Wed, 21 Jan
American Airlines Logo
11:20 - 17:14LGW-DCA
34h 54m1 stop
American Airlines Logo
19:31 - 07:30DCA-LGW
30h 59m2 stops
£474American Airlines
Find Deal
Thu, 15 Jan - Sun, 18 Jan

TAP AIR PORTUGAL flights from London Gatwick Airport to Washington, D.C.

Our best TAP AIR PORTUGAL deals on London Gatwick Airport to Washington, D.C. flight tickets
TAP AIR PORTUGAL
9 Mar
LGW11:00London Gatwick
32h 35m
2 stops
IAD15:35Washington, D.C. Dulles Intl
17 Mar
IAD18:30Washington, D.C. Dulles Intl
11h 20m
1 stop
LGW09:50London Gatwick
£472
Find similar
TAP AIR PORTUGAL
6 Mar
LGW10:45London Gatwick
15h 15m
2 stops
IAD21:00Washington, D.C. Dulles Intl
9 Mar
IAD18:30Washington, D.C. Dulles Intl
17h 15m
1 stop
LGW15:45London Gatwick
£473
Find similar
TAP AIR PORTUGAL
6 Mar
LGW10:45London Gatwick
15h 15m
2 stops
IAD21:00Washington, D.C. Dulles Intl
8 Mar
IAD23:30Washington, D.C. Dulles Intl
30h 20m
1 stop
LGW09:50London Gatwick
£479
Find similar

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

Our best Icelandair deals on London Gatwick Airport to Washington, D.C. flight tickets
Icelandair
9 Jan
LGW11:55London Gatwick
11h 45m
1 stop
BWI18:40Baltimore/Washington
16 Jan
BWI19:40Baltimore/Washington
10h 15m
1 stop
LGW10:55London Gatwick
£470
Find similar
Icelandair
4 Dec
LGW11:55London Gatwick
11h 45m
1 stop
BWI18:40Baltimore/Washington
14 Dec
BWI19:40Baltimore/Washington
10h 15m
1 stop
LGW10:55London Gatwick
£471
Find similar
Icelandair
29 Jan
LGW11:55London Gatwick
11h 45m
1 stop
BWI18:40Baltimore/Washington
4 Feb
BWI19:40Baltimore/Washington
10h 15m
1 stop
LGW10:55London Gatwick
£472
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from London Gatwick Airport to Washington, D.C. 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, momondo users made 279,928 searches. Data last updated 27 November 2025.
Use the filters below to find and compare flights from London Gatwick Airport to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Mon 9/3

11:20-23:34

1 stop16h 14m

Washington, D.C. Reagan-National

Tue 17/3

11:30-07:30

1 stop16h 00m

£469

LondonBaltimore

LGW - BWI

LGWBWI

London Gatwick

Fri 9/1

11:55-18:40

1 stop11h 45m

Baltimore/Washington

Fri 16/1

19:40-10:55

1 stop10h 15m

£470

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Thu 15/1

11:20-19:36

2 stops37h 16m

Washington, D.C. Reagan-National

Sun 18/1

17:24-07:30

2 stops33h 06m

£470

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Sat 10/1

14:00-11:28

2 stops26h 28m

Washington, D.C. Dulles Intl

Sat 17/1

09:33-10:05

1 stop19h 32m

£470

LondonBaltimore

LGW - BWI

LGWBWI

London Gatwick

Sun 11/1

14:10-23:47

1 stop14h 37m

Baltimore/Washington

Sat 17/1

11:30-10:05

1 stop17h 35m

£471

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Mon 9/3

11:00-15:35

2 stops32h 35m

Washington, D.C. Dulles Intl

Tue 17/3

18:30-09:50

1 stop11h 20m

£472

LondonBaltimore

LGW - BWI

LGWBWI

London Gatwick

Thu 29/1

11:55-18:40

1 stop11h 45m

Baltimore/Washington

Wed 4/2

19:40-10:55

1 stop10h 15m

£472

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Fri 6/3

10:45-21:00

2 stops15h 15m

Washington, D.C. Dulles Intl

Mon 9/3

18:30-15:45

1 stop17h 15m

£473

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Wed 14/1

11:20-23:25

1 stop17h 05m

Washington, D.C. Reagan-National

Wed 21/1

08:20-07:30

1 stop18h 10m

£473

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Thu 15/1

11:20-17:14

1 stop34h 54m

Washington, D.C. Reagan-National

Sun 18/1

19:31-07:30

2 stops30h 59m

£474

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington, D.C. from

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

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

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

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

The cheapest month to fly to Washington, D.C. from London Gatwick Airport is in April. Flight prices, which tend to average around £436, are often lower during this time because this is during the off-season. If you don’t want to visit Washington, D.C. in April, then you should wait until January to fly from London Gatwick Airport, when ticket prices are also cheap, with an average price of £440.

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

On average, the least expensive day to fly to Washington, D.C. from London Gatwick Airport is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as £605. However, this price may fluctuate depending on the airline, the season, and holidays. 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 £677.

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

In the evening is the cheapest time of day to fly from London Gatwick Airport to Washington, D.C. when you can find flight prices for as low as £520. Flying to Washington, D.C. in the evening is an ideal time because this is during off-peak travel hours. Flights to Washington, D.C. are more costly in the afternoon, with an average ticket price of £630. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

Can stopping save me money on London Gatwick Airport to Washington, D.C. flights?

You could potentially save up to 58% on your flight if you consider stops on a London Gatwick Airport to Washington, D.C. flight.

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

Are you open to changing your travel dates? Check out the ideal times to fly from London Gatwick Airport to Washington, D.C. 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. (LGW to WAS) flight deals and tips

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

Fastest flight time

11h 20m

Direct flights

None
The fastest flight from London Gatwick Airport to Washington, D.C. takes 11h 20m
There are no direct flights from London Gatwick Airport to Washington, D.C.. There are no popular flight routes from London Gatwick Airport to Washington, D.C..
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  • How far is London Gatwick to Washington, D.C. by plane?

    The distance between London Gatwick and Washington, D.C. is about 3667.7 mi. By plane, this route typically takes 11h 25m.

  • When did momondo last update prices for flights from London Gatwick Airport to Washington, D.C.?

    Prices for flights from London Gatwick Airport to Washington, D.C. were last updated today.

  • How many operators does momondo search for flights from London Gatwick Airport to Washington, D.C.?

  • How old do you have to be to fly from London Gatwick Airport to Washington, D.C.?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Gatwick Airport to Washington, D.C..

  • What documentation or ID do you need to fly to Washington, D.C.?

    The travel and health documents you'll need for your trip to Washington, D.C. may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C.. It is always advisable to seek 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.?

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

Compare and see reviews for airlines that fly from London Gatwick Airport to Washington, D.C. with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom £351Free CancellationRating
7.0
582 reviews
Search Icelandair flights

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Laurel
College Park
Alexandria
Fairfax
Linthicum Heights
Bethesda
Cambridge
Ellicott City
Arlington
Westminster
Woodbridge
Owings Mills
Silver Spring
National Harbor

Why use momondo?

Why should I use momondo to find a flight deal from London to Washington, D.C.?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Washington, D.C. for you.

Can I find flights from London to Washington, D.C. with flexible booking policies on momondo?

Yes. All flights to Washington, D.C. from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from London to Washington, D.C.?

momondo helps you find the best flight between London and Washington, D.C. by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from London to Washington, D.C. right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of London to Washington, D.C. flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.
Washington, D.C. Reagan-National Airport
Washington, D.C. Dulles Intl Airport