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Cheap flights from London Gatwick Airport to Washington, D.C. from £190

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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Cheap return flights

Enter your travel dates to find the best prices.
TAP AIR PORTUGAL Logo
16:35 - 14:35LGW-IAD
27h 00m1 stop
TAP AIR PORTUGAL Logo
17:30 - 09:50IAD-LGW
11h 20m1 stop
£423TAP AIR PORTUGAL
Find Deal
Mon, 19 Jan - Thu, 29 Jan
Multiple Airlines Logo
14:00 - 07:50LGW-IAD
22h 50m1 stop
Multiple Airlines Logo
21:20 - 10:05IAD-LGW
31h 45m1 stop
£424Multiple Airlines
Find Deal
Thu, 27 Nov - Fri, 5 Dec
Multiple Airlines Logo
14:00 - 07:50LGW-IAD
22h 50m1 stop
Multiple Airlines Logo
21:20 - 10:05IAD-LGW
31h 45m1 stop
£426Multiple Airlines
Find Deal
Thu, 27 Nov - Fri, 5 Dec
Icelandair Logo
11:55 - 18:30LGW-IAD
11h 35m1 stop
Icelandair Logo
19:40 - 10:55IAD-LGW
10h 15m1 stop
£462Icelandair
Find Deal
Wed, 26 Nov - Wed, 10 Dec
Icelandair Logo
11:55 - 18:30LGW-IAD
11h 35m1 stop
Icelandair Logo
19:40 - 10:55IAD-LGW
10h 15m1 stop
£463Icelandair
Find Deal
Thu, 4 Dec - Wed, 17 Dec
American Airlines Logo
11:20 - 21:15LGW-DCA
14h 55m1 stop
American Airlines Logo
06:40 - 07:30DCA-LGW
19h 50m1 stop
£479American Airlines
Find Deal
Mon, 8 Dec - Wed, 24 Dec
British Airways Logo
11:20 - 20:59LGW-DCA
14h 39m1 stop
British Airways Logo
08:00 - 07:30DCA-LGW
18h 30m1 stop
£497British Airways
Find Deal
Thu, 26 Feb - Sun, 1 Mar
Iberia Logo
11:45 - 22:05LGW-DCA
15h 20m2 stops
Iberia Logo
13:30 - 10:50DCA-LGW
16h 20m2 stops
£537Iberia
Find Deal
Sat, 15 Nov - Mon, 2 Mar
British Airways Logo
11:20 - 23:07LGW-DCA
16h 47m1 stop
British Airways Logo
11:45 - 07:30DCA-LGW
14h 45m1 stop
£576British Airways
Find Deal
Tue, 25 Nov - Mon, 1 Dec
American Airlines Logo
11:20 - 08:55LGW-DCA
26h 35m1 stop
American Airlines Logo
10:16 - 09:00DCA-LGW
17h 44m1 stop
£582American Airlines
Find Deal
Tue, 25 Nov - Mon, 1 Dec

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
19 Jan
LGW16:35London Gatwick
27h 00m
1 stop
IAD14:35Washington, D.C. Dulles Intl
29 Jan
IAD17:30Washington, D.C. Dulles Intl
11h 20m
1 stop
LGW09:50London Gatwick
£423
Find similar
TAP AIR PORTUGAL
3 Dec
LGW10:40London Gatwick
15h 20m
1 stop
IAD21:00Washington, D.C. Dulles Intl
6 Dec
IAD17:30Washington, D.C. Dulles Intl
11h 20m
1 stop
LGW09:50London Gatwick
£452
Find similar
TAP AIR PORTUGAL
5 Dec
LGW21:25London Gatwick
22h 50m
2 stops
IAD15:15Washington, D.C. Dulles Intl
11 Dec
IAD17:30Washington, D.C. Dulles Intl
11h 20m
1 stop
LGW09:50London Gatwick
£466
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
26 Nov
LGW11:55London Gatwick
11h 35m
1 stop
IAD18:30Washington, D.C. Dulles Intl
10 Dec
IAD19:40Washington, D.C. Dulles Intl
10h 15m
1 stop
LGW10:55London Gatwick
£462
Find similar
Icelandair
14 Nov
LGW11:55London Gatwick
11h 35m
1 stop
IAD18:30Washington, D.C. Dulles Intl
17 Nov
IAD19:40Washington, D.C. Dulles Intl
10h 15m
1 stop
LGW10:55London Gatwick
£463
Find similar
Icelandair
12 Dec
LGW11:55London Gatwick
11h 35m
1 stop
IAD18:30Washington, D.C. Dulles Intl
14 Dec
IAD19:40Washington, D.C. Dulles Intl
10h 15m
1 stop
LGW10:55London Gatwick
£463
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 5 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 - IAD

LGWIAD

London Gatwick

Mon 19/1

16:35-14:35

1 stop27h 00m

Washington, D.C. Dulles Intl

Thu 29/1

17:30-09:50

1 stop11h 20m

£423

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 27/11

14:00-07:50

1 stop22h 50m

Washington, D.C. Dulles Intl

Fri 5/12

21:20-10:05

1 stop31h 45m

£424

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 27/11

14:00-07:50

1 stop22h 50m

Washington, D.C. Dulles Intl

Fri 5/12

21:20-10:05

1 stop31h 45m

£426

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Wed 26/11

11:55-18:30

1 stop11h 35m

Washington, D.C. Dulles Intl

Wed 10/12

19:40-10:55

1 stop10h 15m

£462

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 4/12

11:55-18:30

1 stop11h 35m

Washington, D.C. Dulles Intl

Wed 17/12

19:40-10:55

1 stop10h 15m

£463

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Mon 8/12

11:20-21:15

1 stop14h 55m

Washington, D.C. Reagan-National

Wed 24/12

06:40-07:30

1 stop19h 50m

£479

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Thu 26/2

11:20-20:59

1 stop14h 39m

Washington, D.C. Reagan-National

Sun 1/3

08:00-07:30

1 stop18h 30m

£497

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Sat 15/11

11:45-22:05

2 stops15h 20m

Washington, D.C. Reagan-National

Mon 2/3

13:30-10:50

2 stops16h 20m

£537

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Tue 25/11

11:20-23:07

1 stop16h 47m

Washington, D.C. Reagan-National

Mon 1/12

11:45-07:30

1 stop14h 45m

£576

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Tue 25/11

11:20-08:55

1 stop26h 35m

Washington, D.C. Reagan-National

Mon 1/12

10:16-09:00

1 stop17h 44m

£582

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 £442, 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 March to fly from London Gatwick Airport, when ticket prices are also cheap, with an average price of £446.

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 £617. 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 £695.

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 £526. 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 £647. 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.

Direct flights

None
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 05m.

  • 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 £356Free CancellationRating
7.1
571 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
Westminster
Arlington
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