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Cheap flights from Washington, D.C. to London from £130

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to London departing on 24/1. 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.
Multiple Airlines Logo
19:40 - 15:10IAD-LGW
14h 30m2 stops
Multiple Airlines Logo
08:50 - 18:30LGW-IAD
14h 40m2 stops
£421Multiple Airlines
Find Deal
Thu, 13 Nov - Tue, 18 Nov
Icelandair Logo
19:40 - 10:55IAD-LGW
10h 15m1 stop
Icelandair Logo
11:55 - 18:30LGW-IAD
11h 35m1 stop
£421Icelandair
Find Deal
Thu, 27 Nov - Tue, 2 Dec
TAP AIR PORTUGAL Logo
22:35 - 20:30IAD-LGW
16h 55m2 stops
TAP AIR PORTUGAL Logo
16:25 - 20:35LGW-IAD
33h 10m1 stop
£422TAP AIR PORTUGAL
Find Deal
Wed, 22 Apr - Tue, 28 Apr
TAP AIR PORTUGAL Logo
22:30 - 15:45IAD-LGW
12h 15m1 stop
TAP AIR PORTUGAL Logo
10:40 - 21:00LGW-IAD
15h 20m1 stop
£423TAP AIR PORTUGAL
Find Deal
Sun, 7 Dec - Fri, 26 Dec
TAP AIR PORTUGAL Logo
22:30 - 09:50IAD-LGW
30h 20m1 stop
TAP AIR PORTUGAL Logo
16:35 - 14:35LGW-IAD
27h 00m1 stop
£424TAP AIR PORTUGAL
Find Deal
Wed, 28 Jan - Mon, 2 Feb
Multiple Airlines Logo
20:22 - 06:00IAD-LGW
28h 38m2 stops
Multiple Airlines Logo
14:00 - 19:51LGW-IAD
34h 51m1 stop
£424Multiple Airlines
Find Deal
Sun, 9 Nov - Fri, 14 Nov
TAP AIR PORTUGAL Logo
17:30 - 20:40IAD-LGW
22h 10m2 stops
TAP AIR PORTUGAL Logo
10:40 - 15:15LGW-IAD
33h 35m1 stop
£425TAP AIR PORTUGAL
Find Deal
Sat, 29 Nov - Sun, 7 Dec
SWISS Logo
20:30 - 17:50IAD-LGW
16h 20m1 stop
SWISS Logo
18:40 - 16:40LGW-IAD
27h 00m1 stop
£444SWISS
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Sun, 30 Nov - Thu, 11 Dec
American Airlines Logo
06:45 - 07:30DCA-LGW
19h 45m1 stop
American Airlines Logo
12:30 - 08:59LGW-DCA
25h 29m1 stop
£457American Airlines
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Mon, 10 Nov - Mon, 17 Nov
American Airlines Logo
10:10 - 07:30DCA-LGW
16h 20m2 stops
American Airlines Logo
12:30 - 09:10LGW-DCA
25h 40m1 stop
£477American Airlines
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Sun, 8 Feb - Mon, 16 Feb

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

Our best Icelandair deals on Washington, D.C. to London Gatwick Airport flight tickets
Icelandair
27 Nov
IAD19:40Washington, D.C. Dulles Intl
10h 15m
1 stop
LGW10:55London Gatwick
2 Dec
LGW11:55London Gatwick
11h 35m
1 stop
IAD18:30Washington, D.C. Dulles Intl
£421
Find similar
Icelandair
4 Nov
IAD19:40Washington, D.C. Dulles Intl
10h 15m
1 stop
LGW10:55London Gatwick
12 Nov
LGW11:55London Gatwick
11h 35m
1 stop
IAD18:30Washington, D.C. Dulles Intl
£425
Find similar
Icelandair
31 Dec
IAD19:40Washington, D.C. Dulles Intl
10h 15m
1 stop
LGW10:55London Gatwick
19 Jan
LGW11:55London Gatwick
11h 35m
1 stop
IAD18:30Washington, D.C. Dulles Intl
£426
Find similar

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

Our best SWISS deals on Washington, D.C. to London Gatwick Airport flight tickets
SWISS
30 Nov
IAD20:30Washington, D.C. Dulles Intl
16h 20m
1 stop
LGW17:50London Gatwick
11 Dec
LGW18:40London Gatwick
27h 00m
1 stop
IAD16:40Washington, D.C. Dulles Intl
£444
Find similar
SWISS
4 Nov
IAD20:30Washington, D.C. Dulles Intl
16h 20m
1 stop
LGW17:50London Gatwick
10 Nov
LGW18:40London Gatwick
27h 00m
1 stop
IAD16:40Washington, D.C. Dulles Intl
£461
Find similar
SWISS
4 Nov
IAD20:30Washington, D.C. Dulles Intl
16h 20m
1 stop
LGW17:50London Gatwick
10 Nov
LGW18:40London Gatwick
27h 00m
1 stop
IAD16:40Washington, D.C. Dulles Intl
£473
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Washington, D.C. to London Gatwick Airport 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 24 October 2025.
Use the filters below to find and compare flights from Washington, D.C. to London Gatwick Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Thu 13/11

19:40-15:10

2 stops14h 30m

London Gatwick

Tue 18/11

08:50-18:30

2 stops14h 40m

£421

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Thu 27/11

19:40-10:55

1 stop10h 15m

London Gatwick

Tue 2/12

11:55-18:30

1 stop11h 35m

£421

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Wed 22/4

22:35-20:30

2 stops16h 55m

London Gatwick

Tue 28/4

16:25-20:35

1 stop33h 10m

£422

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Sun 7/12

22:30-15:45

1 stop12h 15m

London Gatwick

Fri 26/12

10:40-21:00

1 stop15h 20m

£423

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Wed 28/1

22:30-09:50

1 stop30h 20m

London Gatwick

Mon 2/2

16:35-14:35

1 stop27h 00m

£424

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Sun 9/11

20:22-06:00

2 stops28h 38m

London Gatwick

Fri 14/11

14:00-19:51

1 stop34h 51m

£424

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Sat 29/11

17:30-20:40

2 stops22h 10m

London Gatwick

Sun 7/12

10:40-15:15

1 stop33h 35m

£425

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Sun 30/11

20:30-17:50

1 stop16h 20m

London Gatwick

Thu 11/12

18:40-16:40

1 stop27h 00m

£444

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

Mon 10/11

06:45-07:30

1 stop19h 45m

London Gatwick

Mon 17/11

12:30-08:59

1 stop25h 29m

£457

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

Sun 8/2

10:10-07:30

2 stops16h 20m

London Gatwick

Mon 16/2

12:30-09:10

1 stop25h 40m

£477

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 London from

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

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

What is the cheapest month to fly to London Gatwick Airport?

The cheapest month to fly to London Gatwick Airport from Washington, D.C. is in January. Flight prices, which tend to average around £376, are often lower during this time because this is during the off-season. If you don’t want to visit London Gatwick Airport in January, then you should wait until November to fly from Washington, D.C., when ticket prices are also cheap, with an average price of £434.

What is the cheapest day to depart on your flight to London Gatwick Airport?

According to our data, Thursday is the cheapest day to fly to London Gatwick Airport from Washington, D.C.. The lowest ticket price found for a Thursday departure recently was £626. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from Washington, D.C. to London Gatwick Airport on a Saturday will generally be more expensive and average around £832. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

You could potentially save up to 45% on your flight if you consider stops on a Washington, D.C. to London Gatwick Airport flight.

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

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

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

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

Direct flights

None
There are no direct flights from Washington, D.C. to London Gatwick Airport. There are no popular flight routes from Washington, D.C. to London Gatwick Airport.
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  • How far is Washington, D.C. to London Gatwick by plane?

    There are 3667.7 mi between Washington, D.C. and London Gatwick. By plane, this route typically takes 10h 15m.

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

    Prices for flights from Washington, D.C. to London Gatwick Airport are refreshed on a daily basis.

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

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

  • What documentation or ID do you need to fly to London Gatwick Airport?

    The travel and health documents you'll need for your trip to London Gatwick Airport 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 London Gatwick Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

Compare and see reviews for airlines that fly from Washington, D.C. to London Gatwick Airport with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom £556Free CancellationRating
7.1
561 reviews
Search Icelandair flights

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Milton Keynes
Luton
Gatwick
Maidstone
Slough
Canterbury
Southend-on-Sea
Ipswich
Ilford
Guildford
Colchester
Dover
Hayes
Chelmsford
Worthing
Bedford
Dartford
Ramsgate
Stansted

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington, D.C. to London . Millions of users trust and use momondo every year so you are in good hands.

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

momondo does allow users to show only those flights to London from Washington, D.C. which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search for Washington, D.C. to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Washington, D.C. and alert you when they change.

An easier way to manage your London Gatwick Airport trip

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