What is the cheapest airline that flies from London Gatwick to Washington?

SWISS is the most popular carrier operating from London Gatwick to Washington

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

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 London Gatwick Airport to Washington.

What documentation or ID do you need to fly to Washington?

The travel and health documents required for your trip to Washington can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$517 Cheap Flights from London Gatwick Airport to State of Washington in 2026

Find the cheapest flights from London Gatwick Airport to Washington

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:40 pm - 8:40 pmLGW London Gatwick-SEA Seattle/Tacoma Intl

13h 00m1 stop Reykjavik Keflavik Intl

7:00 pm - 2:40 pmSEA Seattle/Tacoma Intl-LGW London Gatwick

11h 40m1 stop Reykjavik Keflavik Intl

$639Icelandair

Tue, Sep 22 - Wed, Sep 30

3:40 pm - 8:40 pmLGW London Gatwick-SEA Seattle/Tacoma Intl

13h 00m1 stop Reykjavik Keflavik Intl

7:00 pm - 2:40 pmSEA Seattle/Tacoma Intl-LGW London Gatwick

11h 40m1 stop Reykjavik Keflavik Intl

$640Icelandair

Tue, Sep 29 - Wed, Oct 7

3:40 pm - 8:40 pmLGW London Gatwick-SEA Seattle/Tacoma Intl

13h 00m1 stop Reykjavik Keflavik Intl

7:00 pm - 2:40 pmSEA Seattle/Tacoma Intl-LGW London Gatwick

11h 40m1 stop Reykjavik Keflavik Intl

$641Icelandair

Tue, Sep 1 - Mon, Sep 7

3:40 pm - 8:40 pmLGW London Gatwick-SEA Seattle/Tacoma Intl

13h 00m1 stop Reykjavik Keflavik Intl

7:00 pm - 2:40 pmSEA Seattle/Tacoma Intl-LGW London Gatwick

11h 40m1 stop Reykjavik Keflavik Intl

$643Icelandair

Wed, Sep 2 - Wed, Sep 23

3:40 pm - 11:45 amLGW London Gatwick-SEA Seattle/Tacoma Intl

28h 05m1 stop Reykjavik Keflavik Intl

7:00 pm - 2:40 pmSEA Seattle/Tacoma Intl-LGW London Gatwick

11h 40m1 stop Reykjavik Keflavik Intl

$645Icelandair

Tue, Sep 8 - Tue, Sep 15

1:00 pm - 8:40 pmLGW London Gatwick-SEA Seattle/Tacoma Intl

15h 40m1 stop Reykjavik Keflavik Intl

7:00 pm - 2:40 pmSEA Seattle/Tacoma Intl-LGW London Gatwick

11h 40m1 stop Reykjavik Keflavik Intl

$646Icelandair

Tue, Sep 1 - Tue, Sep 8

1:00 pm - 8:40 pmLGW London Gatwick-SEA Seattle/Tacoma Intl

15h 40m1 stop Reykjavik Keflavik Intl

7:00 pm - 2:40 pmSEA Seattle/Tacoma Intl-LGW London Gatwick

11h 40m1 stop Reykjavik Keflavik Intl

$647Icelandair

Tue, Sep 1 - Tue, Sep 15

3:40 pm - 8:40 pmLGW London Gatwick-SEA Seattle/Tacoma Intl

13h 00m1 stop Reykjavik Keflavik Intl

3:40 pm - 2:40 pmSEA Seattle/Tacoma Intl-LGW London Gatwick

15h 00m1 stop Reykjavik Keflavik Intl

$648Icelandair

Tue, Sep 1 - Tue, Sep 8

3:40 pm - 8:40 pmLGW London Gatwick-SEA Seattle/Tacoma Intl

13h 00m1 stop Reykjavik Keflavik Intl

3:35 pm - 10:55 amSEA Seattle/Tacoma Intl-LGW London Gatwick

12h 20m1 stop Reykjavik Keflavik Intl

$649Icelandair

Sat, Oct 17 - Thu, Oct 29

1:00 pm - 5:55 pmLGW London Gatwick-SEA Seattle/Tacoma Intl

12h 55m1 stop Reykjavik Keflavik Intl

7:00 pm - 2:40 pmSEA Seattle/Tacoma Intl-LGW London Gatwick

11h 40m1 stop Reykjavik Keflavik Intl

$650Icelandair

Tue, Sep 1 - Tue, Sep 8

Cheap last minute flights

Enter your travel dates to find the best prices.

1:00 pm - 11:45 amLGW London Gatwick-SEA Seattle/Tacoma Intl

30h 45m1 stop Reykjavik Keflavik Intl

7:00 pm - 2:40 pmSEA Seattle/Tacoma Intl-LGW London Gatwick

11h 40m1 stop Reykjavik Keflavik Intl

$745Icelandair

Thu, Aug 20 - Mon, Sep 14

1:00 pm - 5:55 pmLGW London Gatwick-SEA Seattle/Tacoma Intl

12h 55m1 stop Reykjavik Keflavik Intl

7:00 pm - 2:40 pmSEA Seattle/Tacoma Intl-LGW London Gatwick

11h 40m1 stop Reykjavik Keflavik Intl

$895Icelandair

Thu, Aug 20 - Thu, Sep 24

5:25 pm - 4:00 pmLGW London Gatwick-SEA Seattle/Tacoma Intl

30h 35m2 stops Barcelona-El Prat Frankfurt am Main

5:40 pm - 11:25 pmSEA Seattle/Tacoma Intl-LGW London Gatwick

21h 45m2 stops Frankfurt am Main Barcelona-El Prat

$906Multiple Airlines

Wed, Aug 19 - Sun, Aug 23

5:25 pm - 4:00 pmLGW London Gatwick-SEA Seattle/Tacoma Intl

30h 35m2 stops Barcelona-El Prat Frankfurt am Main

5:40 pm - 9:00 amSEA Seattle/Tacoma Intl-LGW London Gatwick

31h 20m3 stops Frankfurt am Main Barcelona-El Prat Madrid Barajas

$955Multiple Airlines

Wed, Aug 19 - Sun, Aug 23

9:40 am - 9:40 amLGW London Gatwick-SEA Seattle/Tacoma Intl

32h 00m2 stops Toronto Pearson Intl Calgary

7:00 pm - 11:00 pmSEA Seattle/Tacoma Intl-LGW London Gatwick

20h 00m2 stops Reykjavik Keflavik Intl Kastrup Copenhagen

$988Multiple Airlines

Thu, Aug 20 - Thu, Aug 27

9:40 am - 9:40 amLGW London Gatwick-SEA Seattle/Tacoma Intl

32h 00m3 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl Calgary

7:00 pm - 11:00 pmSEA Seattle/Tacoma Intl-LGW London Gatwick

20h 00m2 stops Reykjavik Keflavik Intl Kastrup Copenhagen

$1,003Multiple Airlines

Thu, Aug 20 - Thu, Aug 27

8:40 pm - 8:52 pmLGW London Gatwick-SEA Seattle/Tacoma Intl

32h 12m2 stops Madrid Barajas Chicago O'Hare Intl

6:15 am - 8:00 pmSEA Seattle/Tacoma Intl-LGW London Gatwick

29h 45m2 stops Chicago O'Hare Intl Madrid Barajas

$1,007Iberia

Thu, Aug 20 - Mon, Sep 14

10:20 am - 3:40 pmLGW London Gatwick-SEA Seattle/Tacoma Intl

13h 20m1 stop Frankfurt am Main

6:05 pm - 6:50 pmSEA Seattle/Tacoma Intl-LGW London Gatwick

16h 45m1 stop Frankfurt am Main

$1,018Condor

Wed, Aug 19 - Thu, Aug 20

3:40 pm - 11:45 amLGW London Gatwick-SEA Seattle/Tacoma Intl

28h 05m1 stop Reykjavik Keflavik Intl

3:40 pm - 2:40 pmSEA Seattle/Tacoma Intl-LGW London Gatwick

15h 00m1 stop Reykjavik Keflavik Intl

$1,029Icelandair

Wed, Aug 19 - Sun, Aug 23

9:40 am - 9:40 amLGW London Gatwick-SEA Seattle/Tacoma Intl

32h 00m2 stops Toronto Pearson Intl Calgary

7:00 pm - 11:00 pmSEA Seattle/Tacoma Intl-LGW London Gatwick

20h 00m2 stops Reykjavik Keflavik Intl Kastrup Copenhagen

$1,033Multiple Airlines

Thu, Aug 20 - Thu, Aug 27

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Icelandair flights from London Gatwick Airport to State of Washington

Our best Icelandair deals on London Gatwick Airport to State of Washington flight tickets

Icelandair

Sep 22

LGW3:40 pmLondon Gatwick

13h 00m

1 stop

SEA8:40 pmSeattle/Tacoma Intl

Sep 30

SEA7:00 pmSeattle/Tacoma Intl

11h 40m

1 stop

LGW2:40 pmLondon Gatwick

$639

Icelandair

Sep 29

LGW3:40 pmLondon Gatwick

13h 00m

1 stop

SEA8:40 pmSeattle/Tacoma Intl

Oct 7

SEA7:00 pmSeattle/Tacoma Intl

11h 40m

1 stop

LGW2:40 pmLondon Gatwick

$640

Icelandair

Sep 1

LGW3:40 pmLondon Gatwick

13h 00m

1 stop

SEA8:40 pmSeattle/Tacoma Intl

Sep 7

SEA7:00 pmSeattle/Tacoma Intl

11h 40m

1 stop

LGW2:40 pmLondon Gatwick

$641

SWISS flights from London Gatwick Airport to State of Washington

Our best SWISS deals on London Gatwick Airport to State of Washington flight tickets

SWISS

Aug 25

LGW9:25 amLondon Gatwick

19h 18m

2 stops

SEA8:43 pmSeattle/Tacoma Intl

Sep 13

SEA7:00 amSeattle/Tacoma Intl

17h 25m

2 stops

LGW8:25 amLondon Gatwick

$810

SWISS

Aug 29

LGW9:25 amLondon Gatwick

19h 18m

2 stops

SEA8:43 pmSeattle/Tacoma Intl

Sep 17

SEA7:00 amSeattle/Tacoma Intl

17h 25m

2 stops

LGW8:25 amLondon Gatwick

$856

SWISS

Nov 2

LGW6:40 pmLondon Gatwick

36h 32m

2 stops

PDX11:12 pmPortland

Nov 17

PDX8:40 amPortland

25h 10m

2 stops

LGW5:50 pmLondon Gatwick

$932

momondo Fare Finder

Use the filters below to find and compare flights from London Gatwick Airport to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonSeattle

LGW London Gatwick - SEA Seattle/Tacoma Intl

LGWSEA

London Gatwick

Tue 9/22

3:40 pm-8:40 pm

1 stop13h 00m

Seattle/Tacoma Intl

Wed 9/30

7:00 pm-2:40 pm

1 stop11h 40m

$639

LondonSeattle

LGW London Gatwick - SEA Seattle/Tacoma Intl

LGWSEA

London Gatwick

Tue 9/29

3:40 pm-8:40 pm

1 stop13h 00m

Seattle/Tacoma Intl

Wed 10/7

7:00 pm-2:40 pm

1 stop11h 40m

$640

LondonSeattle

LGW London Gatwick - SEA Seattle/Tacoma Intl

LGWSEA

London Gatwick

Tue 9/1

3:40 pm-8:40 pm

1 stop13h 00m

Seattle/Tacoma Intl

Mon 9/7

7:00 pm-2:40 pm

1 stop11h 40m

$641

LondonSeattle

LGW London Gatwick - SEA Seattle/Tacoma Intl

LGWSEA

London Gatwick

Wed 9/2

3:40 pm-8:40 pm

1 stop13h 00m

Seattle/Tacoma Intl

Wed 9/23

7:00 pm-2:40 pm

1 stop11h 40m

$643

LondonSeattle

LGW London Gatwick - SEA Seattle/Tacoma Intl

LGWSEA

London Gatwick

Tue 9/8

3:40 pm-11:45 am

1 stop28h 05m

Seattle/Tacoma Intl

Tue 9/15

7:00 pm-2:40 pm

1 stop11h 40m

$645

LondonSeattle

LGW London Gatwick - SEA Seattle/Tacoma Intl

LGWSEA

London Gatwick

Tue 9/1

1:00 pm-8:40 pm

1 stop15h 40m

Seattle/Tacoma Intl

Tue 9/8

7:00 pm-2:40 pm

1 stop11h 40m

$646

LondonSeattle

LGW London Gatwick - SEA Seattle/Tacoma Intl

LGWSEA

London Gatwick

Tue 9/1

1:00 pm-8:40 pm

1 stop15h 40m

Seattle/Tacoma Intl

Tue 9/15

7:00 pm-2:40 pm

1 stop11h 40m

$647

LondonSeattle

LGW London Gatwick - SEA Seattle/Tacoma Intl

LGWSEA

London Gatwick

Tue 9/1

3:40 pm-8:40 pm

1 stop13h 00m

Seattle/Tacoma Intl

Tue 9/8

3:40 pm-2:40 pm

1 stop15h 00m

$648

LondonSeattle

LGW London Gatwick - SEA Seattle/Tacoma Intl

LGWSEA

London Gatwick

Sat 10/17

3:40 pm-8:40 pm

1 stop13h 00m

Seattle/Tacoma Intl

Thu 10/29

3:35 pm-10:55 am

1 stop12h 20m

$649

Quickest round-trip

LondonSeattle

LGW London Gatwick - SEA Seattle/Tacoma Intl

LGWSEA

London Gatwick

Tue 9/1

1:00 pm-5:55 pm

1 stop12h 55m

Seattle/Tacoma Intl

Tue 9/8

7:00 pm-2:40 pm

1 stop11h 40m

$650

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from London Gatwick Airport to State of Washington

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

Prices

Airlines

What is the cheapest month to fly to State of Washington?

The month of February is, on average, the cheapest month to fly to State of Washington from London Gatwick Airport, with most prices found around $0. If you aren’t able to travel to State of Washington during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $529.

Can stopping save me money on London Gatwick Airport to State of Washington flights?

You could potentially save up to 28% on your flight if you consider stops on a London Gatwick Airport to State of Washington flight.

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

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

Fastest flight time	13h 00m
Direct flights	None

The fastest flight from London Gatwick Airport to State of Washington takes 13h 00m

There are no direct flights from London Gatwick Airport to State of Washington. There are no popular flight routes from London Gatwick Airport to State of Washington.

Search flight deals

Frequently asked questions about flying from London Gatwick Airport to Washington

When did momondo last update prices for flights from London Gatwick Airport to Washington?
Prices for flights from London Gatwick Airport to Washington refresh daily.
How old do you have to be to fly from London Gatwick Airport to Washington?
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 London Gatwick Airport to Washington.
What documentation or ID do you need to fly to Washington?
The travel and health documents required for your trip to Washington can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

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

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 for you.

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

Yes. All flights to Washington 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?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Washington from London.

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

Yes. momondo can track prices for London to Washington flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.