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Cheap flights from London Gatwick Airport to Washington from $425

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 departing on 6/6. 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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0 bags

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Find the cheapest flights from London Gatwick Airport to Washington

Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
11:55 am - 5:00 pm
LGW
-
SEA
13h 05m
1 stop
Icelandair Logo
2:35 pm - 10:55 am
SEA
-
LGW
12h 20m
1 stop
$518Icelandair
Thu, Feb 19 - Thu, Feb 26
Icelandair Logo
11:55 am - 5:00 pm
LGW
-
SEA
13h 05m
1 stop
Icelandair Logo
2:35 pm - 10:55 am
SEA
-
LGW
12h 20m
1 stop
$536Icelandair
Wed, Feb 18 - Wed, Feb 25
Icelandair Logo
11:55 am - 5:00 pm
LGW
-
SEA
13h 05m
1 stop
Icelandair Logo
3:35 pm - 10:55 am
SEA
-
LGW
12h 20m
1 stop
$539Icelandair
Mon, Mar 2 - Tue, Mar 17
American Airlines Logo
12:30 pm - 12:54 pm
LGW
-
SEA
31h 24m
2 stops
American Airlines Logo
5:30 am - 9:00 am
SEA
-
LGW
20h 30m
2 stops
$546American Airlines
Wed, Mar 18 - Wed, Mar 25
British Airways Logo
11:30 am - 12:44 am
LGW
-
SEA
21h 14m
2 stops
British Airways Logo
1:19 pm - 8:00 pm
SEA
-
LGW
22h 41m
2 stops
$557British Airways
Wed, Apr 22 - Tue, Apr 28
Delta Logo
10:25 am - 5:38 pm
LGW
-
SEA
15h 13m
1 stop
Delta Logo
1:30 pm - 9:25 am
SEA
-
LGW
11h 55m
1 stop
$559Delta
Mon, Apr 13 - Thu, Apr 30
Delta Logo
10:35 am - 9:58 am
LGW
-
SEA
31h 23m
2 stops
Delta Logo
6:40 pm - 3:45 pm
SEA
-
LGW
13h 05m
1 stop
$565Delta
Tue, Apr 21 - Mon, Apr 27
British Airways Logo
8:40 pm - 10:38 pm
LGW
-
SEA
33h 58m
2 stops
British Airways Logo
1:19 pm - 8:00 pm
SEA
-
LGW
22h 41m
2 stops
$566British Airways
Mon, Apr 20 - Tue, Apr 28
Multiple Airlines Logo
1:00 pm - 11:44 pm
LGW
-
PDX
42h 44m
2 stops
Multiple Airlines Logo
7:25 am - 6:00 am
PDX
-
LGW
15h 35m
1 stop
$760Multiple Airlines
Fri, Feb 27 - Mon, Mar 9
Multiple Airlines Logo
7:00 am - 9:15 am
LGW
-
PDX
33h 15m
3 stops
Multiple Airlines Logo
3:30 pm - 5:20 pm
PDX
-
LGW
17h 50m
2 stops
$767Multiple Airlines
Mon, Mar 16 - Mon, Mar 30

British Airways flights from London Gatwick Airport to State of Washington

Our best British Airways deals on London Gatwick Airport to State of Washington flight tickets
British Airways
Apr 20
LGW8:40 pmLondon Gatwick
33h 58m
2 stops
SEA10:38 pmSeattle/Tacoma Intl
Apr 28
SEA1:19 pmSeattle/Tacoma Intl
22h 41m
2 stops
LGW8:00 pmLondon Gatwick
$566
British Airways
Apr 21
LGW11:30 amLondon Gatwick
40h 06m
2 stops
SEA7:36 pmSeattle/Tacoma Intl
Apr 27
SEA2:10 pmSeattle/Tacoma Intl
45h 50m
2 stops
LGW8:00 pmLondon Gatwick
$576
British Airways
Apr 20
LGW8:40 pmLondon Gatwick
36h 11m
2 stops
SEA12:51 amSeattle/Tacoma Intl
Apr 26
SEA2:10 pmSeattle/Tacoma Intl
45h 50m
2 stops
LGW8:00 pmLondon Gatwick
$587

Delta flights from London Gatwick Airport to State of Washington

Our best Delta deals on London Gatwick Airport to State of Washington flight tickets
Delta
Apr 13
LGW10:25 amLondon Gatwick
15h 13m
1 stop
SEA5:38 pmSeattle/Tacoma Intl
May 7
SEA1:30 pmSeattle/Tacoma Intl
18h 30m
1 stop
LGW4:00 pmLondon Gatwick
$559
Delta
Apr 21
LGW10:35 amLondon Gatwick
31h 23m
2 stops
SEA9:58 amSeattle/Tacoma Intl
Apr 28
SEA1:30 pmSeattle/Tacoma Intl
11h 55m
1 stop
LGW9:25 amLondon Gatwick
$565
Delta
Apr 13
LGW10:25 amLondon Gatwick
15h 13m
1 stop
SEA5:38 pmSeattle/Tacoma Intl
May 6
SEA6:40 pmSeattle/Tacoma Intl
13h 20m
1 stop
LGW4:00 pmLondon Gatwick
$573

momondo Fare Finder

 
Customize your flight search to find flights from London Gatwick Airport to State of Washington 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 832,500 searches. Data last updated February 2, 2026.
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

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Thu 2/19

11:55 am-5:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Thu 2/26

2:35 pm-10:55 am

1 stop12h 20m

$518

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 2/18

11:55 am-5:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Wed 2/25

2:35 pm-10:55 am

1 stop12h 20m

$536

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 3/2

11:55 am-5:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Tue 3/17

3:35 pm-10:55 am

1 stop12h 20m

$539

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 3/18

12:30 pm-12:54 pm

2 stops31h 24m

Seattle/Tacoma Intl

Wed 3/25

5:30 am-9:00 am

2 stops20h 30m

$546

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 4/22

11:30 am-12:44 am

2 stops21h 14m

Seattle/Tacoma Intl

Tue 4/28

1:19 pm-8:00 pm

2 stops22h 41m

$557

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 4/13

10:25 am-5:38 pm

1 stop15h 13m

Seattle/Tacoma Intl

Thu 4/30

1:30 pm-9:25 am

1 stop11h 55m

$559

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Tue 4/21

10:35 am-9:58 am

2 stops31h 23m

Seattle/Tacoma Intl

Mon 4/27

6:40 pm-3:45 pm

1 stop13h 05m

$565

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 4/20

8:40 pm-10:38 pm

2 stops33h 58m

Seattle/Tacoma Intl

Tue 4/28

1:19 pm-8:00 pm

2 stops22h 41m

$566

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Fri 2/27

1:00 pm-11:44 pm

2 stops42h 44m

Portland

Mon 3/9

7:25 am-6:00 am

1 stop15h 35m

$760

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Mon 3/16

7:00 am-9:15 am

3 stops33h 15m

Portland

Mon 3/30

3:30 pm-5:20 pm

2 stops17h 50m

$767

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington from

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

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

The month of March is, on average, the cheapest month to fly to State of Washington from London Gatwick Airport, with most prices found around $513. If you aren’t able to travel to State of Washington during the month of March, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $538.

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

You could potentially save up to 33% 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

12h 55m

Direct flights

None
The fastest flight from London Gatwick Airport to State of Washington takes 12h 55m
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.
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  • 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 many operators does momondo search for flights from London Gatwick Airport 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.

Best airlines flying from London Gatwick Airport to State of Washington

Compare and see reviews for airlines that fly from London Gatwick Airport to State of Washington with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom $501Free CancellationRating
7.1
606 reviews
Search Icelandair flights

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.

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