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Cheap flights from London Gatwick Airport to Washington, D.C. from £340

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 2/9. 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

Icelandair Logo
15:40 - 19:25LGW-BWI
32h 45m1 stop
Icelandair Logo
20:30 - 14:40BWI-LGW
13h 10m1 stop
£420Icelandair
Find Deal
Tue, 23 Sep - Tue, 30 Sep
Logo
11:15 - 17:40LGW-BWI
35h 25m2 stops
Logo
13:17 - 10:00BWI-LGW
15h 43m1 stop
£420
Find Deal
Thu, 25 Sep - Wed, 1 Oct
JetBlue Logo
12:10 - 20:55LGW-DCA
13h 45m1 stop
JetBlue Logo
16:45 - 09:35DCA-LGW
11h 50m1 stop
£436JetBlue
Find Deal
Sat, 20 Sep - Mon, 22 Sep
TAP AIR PORTUGAL Logo
16:25 - 15:20LGW-IAD
27h 55m1 stop
TAP AIR PORTUGAL Logo
22:20 - 09:45IAD-LGW
30h 25m1 stop
£437TAP AIR PORTUGAL
Find Deal
Mon, 22 Sep - Mon, 29 Sep
JetBlue Logo
12:10 - 20:55LGW-DCA
13h 45m1 stop
JetBlue Logo
18:59 - 09:35DCA-LGW
9h 36m1 stop
£437JetBlue
Find Deal
Thu, 25 Sep - Wed, 1 Oct
American Airlines Logo
15:05 - 13:51LGW-IAD
27h 46m2 stops
American Airlines Logo
13:53 - 08:10IAD-LGW
37h 17m2 stops
£463American Airlines
Find Deal
Tue, 16 Sep - Sun, 21 Sep
British Airways Logo
15:05 - 23:07LGW-DCA
13h 02m1 stop
British Airways Logo
15:35 - 08:10DCA-LGW
11h 35m1 stop
£464British Airways
Find Deal
Tue, 9 Sep - Sat, 20 Sep
American Airlines Logo
15:05 - 23:07LGW-DCA
13h 02m1 stop
American Airlines Logo
15:35 - 08:10DCA-LGW
11h 35m1 stop
£467American Airlines
Find Deal
Sat, 27 Sep - Fri, 3 Oct
TAP AIR PORTUGAL Logo
16:25 - 20:50LGW-IAD
33h 25m1 stop
TAP AIR PORTUGAL Logo
22:20 - 20:25IAD-LGW
17h 05m2 stops
£474TAP AIR PORTUGAL
Find Deal
Wed, 8 Oct - Mon, 13 Oct
British Airways Logo
15:05 - 23:07LGW-DCA
13h 02m1 stop
British Airways Logo
13:39 - 08:10DCA-LGW
13h 31m1 stop
£481British Airways
Find Deal
Sat, 20 Sep - Tue, 30 Sep

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
23 Sept
LGW15:40London Gatwick
32h 45m
1 stop
BWI19:25Baltimore/Washington
30 Sept
BWI20:30Baltimore/Washington
13h 10m
1 stop
LGW14:40London Gatwick
£420
Find similar
Icelandair
2 Oct
LGW15:40London Gatwick
32h 45m
1 stop
BWI19:25Baltimore/Washington
7 Oct
BWI20:30Baltimore/Washington
13h 10m
1 stop
LGW14:40London Gatwick
£421
Find similar
Icelandair
13 Nov
LGW11:55London Gatwick
11h 45m
1 stop
BWI18:40Baltimore/Washington
24 Nov
BWI19:40Baltimore/Washington
10h 15m
1 stop
LGW10:55London Gatwick
£422
Find similar

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
22 Sept
LGW16:25London Gatwick
27h 55m
1 stop
IAD15:20Washington, D.C. Dulles Intl
29 Sept
IAD22:20Washington, D.C. Dulles Intl
30h 25m
1 stop
LGW09:45London Gatwick
£437
Find similar
TAP AIR PORTUGAL
8 Oct
LGW16:25London Gatwick
33h 25m
1 stop
IAD20:50Washington, D.C. Dulles Intl
13 Oct
IAD22:20Washington, D.C. Dulles Intl
17h 05m
2 stops
LGW20:25London Gatwick
£474
Find similar
TAP AIR PORTUGAL
1 Dec
LGW11:00London Gatwick
32h 35m
2 stops
IAD14:35Washington, D.C. Dulles Intl
7 Dec
IAD22:30Washington, D.C. Dulles Intl
12h 15m
1 stop
LGW15:45London Gatwick
£481
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 22 August 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

LondonBaltimore

LGW - BWI

LGWBWI

London Gatwick

Tue 23/9

15:40-19:25

1 stop32h 45m

Baltimore/Washington

Tue 30/9

20:30-14:40

1 stop13h 10m

£420

LondonBaltimore

LGW - BWI

LGWBWI

London Gatwick

Thu 25/9

11:15-17:40

2 stops35h 25m

Baltimore/Washington

Wed 1/10

13:17-10:00

1 stop15h 43m

£420

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Sat 20/9

12:10-20:55

1 stop13h 45m

Washington, D.C. Reagan-National

Mon 22/9

16:45-09:35

1 stop11h 50m

£436

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Mon 22/9

16:25-15:20

1 stop27h 55m

Washington, D.C. Dulles Intl

Mon 29/9

22:20-09:45

1 stop30h 25m

£437

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Thu 25/9

12:10-20:55

1 stop13h 45m

Washington, D.C. Reagan-National

Wed 1/10

18:59-09:35

1 stop9h 36m

£437

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 16/9

15:05-13:51

2 stops27h 46m

Washington, D.C. Dulles Intl

Sun 21/9

13:53-08:10

2 stops37h 17m

£463

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Tue 9/9

15:05-23:07

1 stop13h 02m

Washington, D.C. Reagan-National

Sat 20/9

15:35-08:10

1 stop11h 35m

£464

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Sat 27/9

15:05-23:07

1 stop13h 02m

Washington, D.C. Reagan-National

Fri 3/10

15:35-08:10

1 stop11h 35m

£467

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Wed 8/10

16:25-20:50

1 stop33h 25m

Washington, D.C. Dulles Intl

Mon 13/10

22:20-20:25

2 stops17h 05m

£474

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Sat 20/9

15:05-23:07

1 stop13h 02m

Washington, D.C. Reagan-National

Tue 30/9

13:39-08:10

1 stop13h 31m

£481

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 September. Flight prices, which tend to average around £409, are often lower during this time because this is during the off-season. If you don’t want to visit Washington, D.C. in September, then you should wait until March to fly from London Gatwick Airport, when ticket prices are also cheap, with an average price of £432.

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 £681.

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 £510. 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 £632. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight to Washington, D.C.?

You are more likely to see cheaper flights to Washington, D.C. from London Gatwick Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around £542 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from London Gatwick Airport for as low as £374 on momondo.

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

You could potentially save up to 48% 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 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 £347Free CancellationRating
7.0
529 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
Essex
Alexandria
Fairfax
Manassas
Bethesda
Oxon Hill
College Park
Linthicum Heights
Gettysburg
Hanover
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