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Cheap flights from London Gatwick Airport to Washington, D.C. from £206

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 16/1. 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

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TAP AIR PORTUGAL Logo
16:35 - 21:00LGW-IAD
33h 25m1 stop
TAP AIR PORTUGAL Logo
22:30 - 15:05IAD-LGW
11h 35m1 stop
£396TAP AIR PORTUGAL
Find Deal
Tue, 20 Jan - Wed, 4 Feb
TAP AIR PORTUGAL Logo
16:00 - 21:00LGW-IAD
34h 00m1 stop
TAP AIR PORTUGAL Logo
17:30 - 15:45IAD-LGW
17h 15m1 stop
£397TAP AIR PORTUGAL
Find Deal
Thu, 4 Dec - Mon, 8 Dec
TAP AIR PORTUGAL Logo
10:40 - 15:15LGW-IAD
33h 35m1 stop
TAP AIR PORTUGAL Logo
22:30 - 15:45IAD-LGW
12h 15m1 stop
£398TAP AIR PORTUGAL
Find Deal
Sun, 23 Nov - Sun, 30 Nov
Multiple Airlines Logo
14:00 - 19:51LGW-IAD
34h 51m1 stop
Multiple Airlines Logo
21:20 - 10:00IAD-LGW
31h 40m1 stop
£401Multiple Airlines
Find Deal
Thu, 13 Nov - Sat, 13 Dec
Multiple Airlines Logo
14:00 - 08:23LGW-BWI
23h 23m1 stop
Multiple Airlines Logo
19:57 - 10:05BWI-LGW
33h 08m1 stop
£407Multiple Airlines
Find Deal
Thu, 20 Nov - Fri, 5 Dec
Icelandair Logo
11:55 - 18:40LGW-BWI
11h 45m1 stop
Icelandair Logo
19:40 - 10:55BWI-LGW
10h 15m1 stop
£459Icelandair
Find Deal
Wed, 12 Nov - Tue, 25 Nov
Icelandair Logo
11:55 - 18:40LGW-BWI
11h 45m1 stop
Icelandair Logo
19:40 - 10:55BWI-LGW
10h 15m1 stop
£460Icelandair
Find Deal
Fri, 21 Nov - Sun, 30 Nov
American Airlines Logo
12:30 - 23:44LGW-DCA
16h 14m2 stops
American Airlines Logo
10:15 - 09:00DCA-LGW
17h 45m1 stop
£565American Airlines
Find Deal
Sun, 23 Nov - Sat, 6 Dec
British Airways Logo
11:45 - 10:17LGW-DCA
27h 32m2 stops
British Airways Logo
13:44 - 10:50DCA-LGW
16h 06m2 stops
£597British Airways
Find Deal
Thu, 13 Nov - Tue, 25 Nov
British Airways Logo
11:20 - 21:59LGW-DCA
15h 39m1 stop
British Airways Logo
08:19 - 07:30DCA-LGW
18h 11m1 stop
£604British Airways
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
20 Jan
LGW16:35London Gatwick
33h 25m
1 stop
IAD21:00Washington, D.C. Dulles Intl
4 Feb
IAD22:30Washington, D.C. Dulles Intl
11h 35m
1 stop
LGW15:05London Gatwick
£396
Find similar
TAP AIR PORTUGAL
4 Dec
LGW16:00London Gatwick
34h 00m
1 stop
IAD21:00Washington, D.C. Dulles Intl
8 Dec
IAD17:30Washington, D.C. Dulles Intl
17h 15m
1 stop
LGW15:45London Gatwick
£397
Find similar
TAP AIR PORTUGAL
23 Nov
LGW10:40London Gatwick
33h 35m
1 stop
IAD15:15Washington, D.C. Dulles Intl
30 Nov
IAD22:30Washington, D.C. Dulles Intl
12h 15m
1 stop
LGW15:45London Gatwick
£398
Find similar

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

Our best SWISS deals on London Gatwick Airport to Washington, D.C. flight tickets
SWISS
31 Oct
LGW18:40London Gatwick
27h 00m
1 stop
IAD17:40Washington, D.C. Dulles Intl
3 Nov
IAD17:25Washington, D.C. Dulles Intl
19h 25m
1 stop
LGW17:50London Gatwick
£625
Find similar
SWISS
29 Oct
LGW18:40London Gatwick
27h 00m
1 stop
IAD17:40Washington, D.C. Dulles Intl
14 Nov
IAD20:30Washington, D.C. Dulles Intl
16h 20m
1 stop
LGW17:50London Gatwick
£654
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 17 October 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

Tue 20/1

16:35-21:00

1 stop33h 25m

Washington, D.C. Dulles Intl

Wed 4/2

22:30-15:05

1 stop11h 35m

£396

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 4/12

16:00-21:00

1 stop34h 00m

Washington, D.C. Dulles Intl

Mon 8/12

17:30-15:45

1 stop17h 15m

£397

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Sun 23/11

10:40-15:15

1 stop33h 35m

Washington, D.C. Dulles Intl

Sun 30/11

22:30-15:45

1 stop12h 15m

£398

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 13/11

14:00-19:51

1 stop34h 51m

Washington, D.C. Dulles Intl

Sat 13/12

21:20-10:00

1 stop31h 40m

£401

LondonBaltimore

LGW - BWI

LGWBWI

London Gatwick

Thu 20/11

14:00-08:23

1 stop23h 23m

Baltimore/Washington

Fri 5/12

19:57-10:05

1 stop33h 08m

£407

LondonBaltimore

LGW - BWI

LGWBWI

London Gatwick

Wed 12/11

11:55-18:40

1 stop11h 45m

Baltimore/Washington

Tue 25/11

19:40-10:55

1 stop10h 15m

£459

LondonBaltimore

LGW - BWI

LGWBWI

London Gatwick

Fri 21/11

11:55-18:40

1 stop11h 45m

Baltimore/Washington

Sun 30/11

19:40-10:55

1 stop10h 15m

£460

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Sun 23/11

12:30-23:44

2 stops16h 14m

Washington, D.C. Reagan-National

Sat 6/12

10:15-09:00

1 stop17h 45m

£565

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Thu 13/11

11:45-10:17

2 stops27h 32m

Washington, D.C. Reagan-National

Tue 25/11

13:44-10:50

2 stops16h 06m

£597

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Tue 25/11

11:20-21:59

1 stop15h 39m

Washington, D.C. Reagan-National

Mon 1/12

08:19-07:30

1 stop18h 11m

£604

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 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 £429, 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 £433.

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 £603. 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 £679.

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 £511. 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 £640. 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 10m.

  • 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 £354Free CancellationRating
7.0
556 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
Gettysburg
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