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Cheap flights from Washington, D.C. to London from £188

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 21/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Cheap return flights

Enter your travel dates to find the best prices.
Icelandair Logo
20:30 - 14:40
BWI
-
LGW
13h 10m
1 stop
Icelandair Logo
15:40 - 22:15
LGW
-
BWI
11h 35m
1 stop
£534Icelandair
Wed, 30 Sep - Tue, 6 Oct
Icelandair Logo
23:20 - 14:40
BWI
-
LGW
10h 20m
1 stop
Icelandair Logo
15:40 - 19:25
LGW
-
BWI
32h 45m
1 stop
£537Icelandair
Sat, 3 Oct - Sun, 11 Oct
Icelandair Logo
20:30 - 14:40
BWI
-
LGW
13h 10m
1 stop
Icelandair Logo
15:40 - 19:25
LGW
-
BWI
32h 45m
1 stop
£539Icelandair
Mon, 5 Oct - Fri, 9 Oct
Icelandair Logo
20:30 - 14:40
BWI
-
LGW
13h 10m
1 stop
Icelandair Logo
15:40 - 19:25
LGW
-
BWI
32h 45m
1 stop
£540Icelandair
Wed, 30 Sep - Wed, 7 Oct
Icelandair Logo
20:30 - 14:40
BWI
-
LGW
13h 10m
1 stop
Icelandair Logo
15:40 - 22:15
LGW
-
BWI
11h 35m
1 stop
£541Icelandair
Fri, 9 Oct - Tue, 20 Oct
Icelandair Logo
23:20 - 14:40
BWI
-
LGW
10h 20m
1 stop
Icelandair Logo
15:40 - 22:15
LGW
-
BWI
11h 35m
1 stop
£543Icelandair
Sat, 10 Oct - Tue, 20 Oct
Icelandair Logo
20:40 - 10:55
BWI
-
LGW
10h 15m
1 stop
Icelandair Logo
11:55 - 18:40
LGW
-
BWI
11h 45m
1 stop
£543Icelandair
Thu, 29 Oct - Mon, 9 Nov
Multiple Airlines Logo
06:59 - 07:55
DCA
-
LGW
19h 56m
1 stop
Multiple Airlines Logo
09:40 - 22:28
LGW
-
DCA
17h 48m
1 stop
£593Multiple Airlines
Mon, 8 Jun - Wed, 10 Jun
TAP AIR PORTUGAL Logo
17:05 - 09:45
IAD
-
LGW
11h 40m
1 stop
TAP AIR PORTUGAL Logo
21:15 - 20:35
LGW
-
IAD
28h 20m
2 stops
£596TAP AIR PORTUGAL
Tue, 29 Sep - Tue, 6 Oct
TAP AIR PORTUGAL Logo
22:35 - 09:45
IAD
-
LGW
30h 10m
1 stop
TAP AIR PORTUGAL Logo
14:50 - 14:25
LGW
-
IAD
28h 35m
1 stop
£597TAP AIR PORTUGAL
Sun, 27 Sep - Thu, 8 Oct

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
30 Sept
BWI20:30Baltimore/Washington
13h 10m
1 stop
LGW14:40London Gatwick
6 Oct
LGW15:40London Gatwick
11h 35m
1 stop
BWI22:15Baltimore/Washington
£534
Icelandair
3 Oct
BWI23:20Baltimore/Washington
10h 20m
1 stop
LGW14:40London Gatwick
11 Oct
LGW15:40London Gatwick
32h 45m
1 stop
BWI19:25Baltimore/Washington
£537
Icelandair
5 Oct
BWI20:30Baltimore/Washington
13h 10m
1 stop
LGW14:40London Gatwick
9 Oct
LGW15:40London Gatwick
32h 45m
1 stop
BWI19:25Baltimore/Washington
£539

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

Our best JetBlue deals on Washington, D.C. to London Gatwick Airport flight tickets
JetBlue
24 May
DCA14:55Washington, D.C. Reagan-National
13h 40m
1 stop
LGW09:35London Gatwick
5 Jun
LGW12:20London Gatwick
12h 39m
1 stop
DCA19:59Washington, D.C. Reagan-National
£722
JetBlue
23 May
DCA18:45Washington, D.C. Reagan-National
9h 50m
1 stop
LGW09:35London Gatwick
27 May
LGW12:20London Gatwick
12h 39m
1 stop
DCA19:59Washington, D.C. Reagan-National
£726

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 13 May 2026.
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

Cheapest return flight

BaltimoreLondon

BWI - LGW

BWILGW

Baltimore/Washington

Wed 30/9

20:30-14:40

1 stop13h 10m

London Gatwick

Tue 6/10

15:40-22:15

1 stop11h 35m

£534

BaltimoreLondon

BWI - LGW

BWILGW

Baltimore/Washington

Sat 3/10

23:20-14:40

1 stop10h 20m

London Gatwick

Sun 11/10

15:40-19:25

1 stop32h 45m

£537

BaltimoreLondon

BWI - LGW

BWILGW

Baltimore/Washington

Mon 5/10

20:30-14:40

1 stop13h 10m

London Gatwick

Fri 9/10

15:40-19:25

1 stop32h 45m

£539

BaltimoreLondon

BWI - LGW

BWILGW

Baltimore/Washington

Wed 30/9

20:30-14:40

1 stop13h 10m

London Gatwick

Wed 7/10

15:40-19:25

1 stop32h 45m

£540

BaltimoreLondon

BWI - LGW

BWILGW

Baltimore/Washington

Fri 9/10

20:30-14:40

1 stop13h 10m

London Gatwick

Tue 20/10

15:40-22:15

1 stop11h 35m

£541
Fastest return journey

BaltimoreLondon

BWI - LGW

BWILGW

Baltimore/Washington

Sat 10/10

23:20-14:40

1 stop10h 20m

London Gatwick

Tue 20/10

15:40-22:15

1 stop11h 35m

£543

BaltimoreLondon

BWI - LGW

BWILGW

Baltimore/Washington

Thu 29/10

20:40-10:55

1 stop10h 15m

London Gatwick

Mon 9/11

11:55-18:40

1 stop11h 45m

£543

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

Mon 8/6

06:59-07:55

1 stop19h 56m

London Gatwick

Wed 10/6

09:40-22:28

1 stop17h 48m

£593

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Tue 29/9

17:05-09:45

1 stop11h 40m

London Gatwick

Tue 6/10

21:15-20:35

2 stops28h 20m

£596

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Sun 27/9

22:35-09:45

1 stop30h 10m

London Gatwick

Thu 8/10

14:50-14:25

1 stop28h 35m

£597

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 March. Flight prices, which tend to average around £228, are often lower during this time because this is during the off-season. If you don’t want to visit London Gatwick Airport in March, then you should wait until November to fly from Washington, D.C., when ticket prices are also cheap, with an average price of £308.

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

You could potentially save up to 25% 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

Fastest flight time

9h 50m

Direct flights

None
The fastest flight from Washington, D.C. to London Gatwick Airport takes 9h 50m
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.
Search flight deals

Frequently asked questions about flying from Washington, D.C. to London Gatwick Airport

  • 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 9h 50m.

  • 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 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.

Travelling to a place near London?

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

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

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
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