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Cheap flights from Washington to London from £194

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 to London departing on 21/10. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Washington to London

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
15:55 - 18:25SEA  Seattle/Tacoma Intl-LGW London Gatwick
18h 30m1 stop Kastrup Copenhagen
Multiple Airlines Logo
18:25 - 13:45LGW  London Gatwick-SEA Seattle/Tacoma Intl
27h 20m2 stops Barcelona-El Prat Kastrup Copenhagen
£479Multiple Airlines
Tue, 6 Oct - Fri, 9 Oct
Multiple Airlines Logo
14:10 - 20:10SEA  Seattle/Tacoma Intl-LGW London Gatwick
22h 00m2 stops Frankfurt am Main Oslo Gardermoen
Multiple Airlines Logo
20:50 - 16:59LGW  London Gatwick-SEA Seattle/Tacoma Intl
28h 09m2 stops Oslo Gardermoen Munich Franz Josef Strauss
£481Multiple Airlines
Tue, 22 Sep - Tue, 6 Oct
Multiple Airlines Logo
18:50 - 09:30SEA  Seattle/Tacoma Intl-LGW London Gatwick
30h 40m3 stops Munich Franz Josef Strauss Kastrup Copenhagen Barcelona-El Prat
Multiple Airlines Logo
07:00 - 21:59LGW  London Gatwick-SEA Seattle/Tacoma Intl
21h 59m2 stops Kastrup Copenhagen Toronto Pearson Intl
£481Multiple Airlines
Sun, 18 Oct - Sun, 1 Nov
Multiple Airlines Logo
14:10 - 20:10SEA  Seattle/Tacoma Intl-LGW London Gatwick
22h 00m2 stops Frankfurt am Main Oslo Gardermoen
Multiple Airlines Logo
20:50 - 12:20LGW  London Gatwick-SEA Seattle/Tacoma Intl
23h 30m2 stops Oslo Gardermoen Frankfurt am Main
£483Multiple Airlines
Tue, 22 Sep - Tue, 6 Oct
Multiple Airlines Logo
15:40 - 19:15SEA  Seattle/Tacoma Intl-LGW London Gatwick
19h 35m2 stops Reykjavik Keflavik Intl Stockholm Arlanda
Multiple Airlines Logo
11:00 - 20:40LGW  London Gatwick-SEA Seattle/Tacoma Intl
17h 40m2 stops Stockholm Arlanda Reykjavik Keflavik Intl
£486Multiple Airlines
Sun, 27 Sep - Tue, 6 Oct
Multiple Airlines Logo
08:40 - 22:00SEA  Seattle/Tacoma Intl-LGW London Gatwick
29h 20m3 stops Vancouver Intl Toronto Pearson Intl Kastrup Copenhagen
Multiple Airlines Logo
19:30 - 12:00LGW  London Gatwick-SEA Seattle/Tacoma Intl
24h 30m2 stops Kastrup Copenhagen Frankfurt am Main
£488Multiple Airlines
Sat, 7 Nov - Tue, 10 Nov
Multiple Airlines Logo
08:00 - 20:10SEA  Seattle/Tacoma Intl-LGW London Gatwick
28h 10m3 stops Toronto Pearson Intl Brussels Bruxelles-National Oslo Gardermoen
Multiple Airlines Logo
20:50 - 16:59LGW  London Gatwick-SEA Seattle/Tacoma Intl
28h 09m2 stops Oslo Gardermoen Munich Franz Josef Strauss
£488Multiple Airlines
Mon, 14 Sep - Tue, 22 Sep
Multiple Airlines Logo
15:40 - 08:40SEA  Seattle/Tacoma Intl-LGW London Gatwick
33h 00m3 stops Reykjavik Keflavik Intl Stockholm Arlanda Oslo Gardermoen
Multiple Airlines Logo
11:00 - 20:40LGW  London Gatwick-SEA Seattle/Tacoma Intl
17h 40m2 stops Stockholm Arlanda Reykjavik Keflavik Intl
£491Multiple Airlines
Sun, 27 Sep - Tue, 6 Oct
Multiple Airlines Logo
08:00 - 20:10SEA  Seattle/Tacoma Intl-LGW London Gatwick
28h 10m3 stops Toronto Pearson Intl Vienna Intl Oslo Gardermoen
Multiple Airlines Logo
20:50 - 12:20LGW  London Gatwick-SEA Seattle/Tacoma Intl
23h 30m2 stops Oslo Gardermoen Frankfurt am Main
£492Multiple Airlines
Tue, 22 Sep - Tue, 6 Oct
Multiple Airlines Logo
08:00 - 20:10SEA  Seattle/Tacoma Intl-LGW London Gatwick
28h 10m3 stops Toronto Pearson Intl Brussels Bruxelles-National Oslo Gardermoen
Multiple Airlines Logo
20:50 - 22:47LGW  London Gatwick-SEA Seattle/Tacoma Intl
33h 57m3 stops Oslo Gardermoen Frankfurt am Main Vancouver Intl
£493Multiple Airlines
Mon, 14 Sep - Tue, 22 Sep

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Icelandair flights from State of Washington to London Gatwick Airport

Our best Icelandair deals on State of Washington to London Gatwick Airport flight tickets
Icelandair
6 Sept
SEA19:00Seattle/Tacoma Intl
32h 45m
1 stop
LGW11:45London Gatwick
22 Sept
LGW15:40London Gatwick
13h 00m
1 stop
SEA20:40Seattle/Tacoma Intl
£523
Icelandair
12 Oct
SEA15:40Seattle/Tacoma Intl
15h 00m
1 stop
LGW14:40London Gatwick
22 Oct
LGW15:40London Gatwick
13h 00m
1 stop
SEA20:40Seattle/Tacoma Intl
£525
Icelandair
8 Sept
SEA19:00Seattle/Tacoma Intl
32h 45m
1 stop
LGW11:45London Gatwick
6 Oct
LGW15:40London Gatwick
13h 00m
1 stop
SEA20:40Seattle/Tacoma Intl
£526

JetBlue flights from State of Washington to London Gatwick Airport

Our best JetBlue deals on State of Washington to London Gatwick Airport flight tickets
JetBlue
22 Aug
PDX23:27Portland
26h 08m
1 stop
LGW09:35London Gatwick
30 Aug
LGW12:20London Gatwick
18h 29m
1 stop
PDX22:49Portland
£679
JetBlue
23 Aug
PDX23:42Portland
25h 53m
1 stop
LGW09:35London Gatwick
30 Aug
LGW12:20London Gatwick
18h 29m
1 stop
PDX22:49Portland
£696

momondo Fare Finder

 
Customise your flight search to find flights from State of Washington 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 9 August 2026.
Use the filters below to find and compare flights from Washington to London Gatwick Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Tue 6/10

15:55-18:25

1 stop18h 30m

London Gatwick

Fri 9/10

18:25-13:45

2 stops27h 20m

£479

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Tue 22/9

14:10-20:10

2 stops22h 00m

London Gatwick

Tue 6/10

20:50-16:59

2 stops28h 09m

£481

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Sun 18/10

18:50-09:30

3 stops30h 40m

London Gatwick

Sun 1/11

07:00-21:59

2 stops21h 59m

£481

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Tue 22/9

14:10-20:10

2 stops22h 00m

London Gatwick

Tue 6/10

20:50-12:20

2 stops23h 30m

£483
Fastest return journey

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Sun 27/9

15:40-19:15

2 stops19h 35m

London Gatwick

Tue 6/10

11:00-20:40

2 stops17h 40m

£486

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Sat 7/11

08:40-22:00

3 stops29h 20m

London Gatwick

Tue 10/11

19:30-12:00

2 stops24h 30m

£488

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Mon 14/9

08:00-20:10

3 stops28h 10m

London Gatwick

Tue 22/9

20:50-16:59

2 stops28h 09m

£488

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Sun 27/9

15:40-08:40

3 stops33h 00m

London Gatwick

Tue 6/10

11:00-20:40

2 stops17h 40m

£491

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Tue 22/9

08:00-20:10

3 stops28h 10m

London Gatwick

Tue 6/10

20:50-12:20

2 stops23h 30m

£492

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Mon 14/9

08:00-20:10

3 stops28h 10m

London Gatwick

Tue 22/9

20:50-22:47

3 stops33h 57m

£493

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 State of Washington 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 cheapest month to fly to London Gatwick Airport?

The cheapest month to fly to London Gatwick Airport from State of Washington is in August. Flight prices, which tend to average around £0, are often lower during this time because this is during the off-season. If you don’t want to visit London Gatwick Airport in August, then you should wait until November to fly from State of Washington, when ticket prices are also cheap, with an average price of £385.

Cheap State of Washington to London Gatwick Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to London Gatwick Airport

Fastest flight time

11h 35m

Direct flights

None
The fastest flight from State of Washington to London Gatwick Airport takes 11h 35m
There are no direct flights from State of Washington to London Gatwick Airport. There are no popular flight routes from State of Washington to London Gatwick Airport.
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Frequently asked questions about flying from Washington to London Gatwick Airport

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

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

  • How old do you have to be to fly from Washington to London Gatwick Airport?

    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 Washington 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
Wembley
Gatwick
Milton Keynes
Luton
Southend-on-Sea
Slough
Ipswich
Maidstone
Folkestone
Ilford
Hastings
Canterbury
Guildford
Chichester
Hayes
Bedford
Harlow
Colchester
Chelmsford

Why use momondo?

Why should I use momondo to find a flight deal from Washington to London?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington to London. momondo saves you time and could save you money on your trip.

Can I find flights from Washington to London with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Washington to London flights to just show those with flexible booking policies.

How can momondo help me find flights from Washington to London?

Once all potential Washington to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Of course. momondo tracks the price of Washington to London 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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