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Cheap flights from London Gatwick Airport to Washington from $423

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 1/22. 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.
SWISS Logo
9:25 am - 10:37 pm
LGW
-
SEA
21h 12m2 stops
SWISS Logo
10:48 am - 5:50 pm
SEA
-
LGW
23h 02m2 stops
$597SWISS
Wed, Apr 8 - Wed, Apr 15
SWISS Logo
9:25 am - 2:30 pm
LGW
-
SEA
13h 05m1 stop
SWISS Logo
4:30 pm - 5:50 pm
SEA
-
LGW
17h 20m1 stop
$600SWISS
Sat, Jun 6 - Sat, Jun 20
Icelandair Logo
3:40 pm - 8:40 pm
LGW
-
SEA
13h 00m1 stop
Icelandair Logo
3:40 pm - 2:40 pm
SEA
-
LGW
15h 00m1 stop
$621Icelandair
Wed, Apr 8 - Wed, Apr 15
Icelandair Logo
11:55 am - 6:00 pm
LGW
-
SEA
13h 05m1 stop
Icelandair Logo
3:35 pm - 10:55 am
SEA
-
LGW
12h 20m1 stop
$623Icelandair
Thu, Mar 19 - Thu, Mar 26
Icelandair Logo
3:40 pm - 5:55 pm
LGW
-
SEA
34h 15m1 stop
Icelandair Logo
3:40 pm - 2:40 pm
SEA
-
LGW
15h 00m1 stop
$625Icelandair
Sun, Apr 5 - Sat, Apr 18
Icelandair Logo
3:40 pm - 8:40 pm
LGW
-
SEA
13h 00m1 stop
Icelandair Logo
7:00 pm - 2:40 pm
SEA
-
LGW
11h 40m1 stop
$626Icelandair
Wed, Apr 8 - Wed, Apr 15
Multiple Airlines Logo
1:00 pm - 12:38 pm
LGW
-
PDX
31h 38m2 stops
Multiple Airlines Logo
10:39 am - 6:00 am
PDX
-
LGW
35h 21m1 stop
$772Multiple Airlines
Mon, Feb 9 - Mon, Feb 23
Iberia Logo
7:40 pm - 6:49 pm
LGW
-
GEG
31h 09m2 stops
Iberia Logo
5:51 am - 7:00 pm
GEG
-
LGW
29h 09m2 stops
$836Iberia
Mon, Feb 9 - Fri, Feb 27
Multiple Airlines Logo
11:55 am - 9:37 pm
LGW
-
GEG
16h 42m2 stops
Multiple Airlines Logo
12:00 pm - 10:55 am
GEG
-
LGW
15h 55m2 stops
$858Multiple Airlines
Tue, Mar 10 - Tue, Mar 17
Iberia Logo
7:40 pm - 9:13 pm
LGW
-
GEG
33h 33m2 stops
Iberia Logo
5:51 am - 10:50 am
GEG
-
LGW
20h 59m2 stops
$860Iberia
Wed, Feb 11 - Sat, Feb 28

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
Apr 8
LGW9:25 amLondon Gatwick
21h 12m
2 stops
SEA10:37 pmSeattle/Tacoma Intl
Apr 15
SEA10:48 amSeattle/Tacoma Intl
23h 02m
2 stops
LGW5:50 pmLondon Gatwick
$597
Find similar
SWISS
Jun 6
LGW9:25 amLondon Gatwick
13h 05m
1 stop
SEA2:30 pmSeattle/Tacoma Intl
Jun 20
SEA4:30 pmSeattle/Tacoma Intl
17h 20m
1 stop
LGW5:50 pmLondon Gatwick
$600
Find similar
SWISS
Mar 10
LGW6:40 pmLondon Gatwick
35h 05m
2 stops
SEA10:45 pmSeattle/Tacoma Intl
Mar 17
SEA10:55 amSeattle/Tacoma Intl
23h 55m
2 stops
LGW5:50 pmLondon Gatwick
$634
Find similar

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
Apr 8
LGW3:40 pmLondon Gatwick
13h 00m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
Apr 15
SEA3:40 pmSeattle/Tacoma Intl
15h 00m
1 stop
LGW2:40 pmLondon Gatwick
$621
Find similar
Icelandair
Mar 19
LGW11:55 amLondon Gatwick
13h 05m
1 stop
SEA6:00 pmSeattle/Tacoma Intl
Mar 26
SEA3:35 pmSeattle/Tacoma Intl
12h 20m
1 stop
LGW10:55 amLondon Gatwick
$623
Find similar
Icelandair
Apr 5
LGW3:40 pmLondon Gatwick
34h 15m
1 stop
SEA5:55 pmSeattle/Tacoma Intl
Apr 18
SEA3:40 pmSeattle/Tacoma Intl
15h 00m
1 stop
LGW2:40 pmLondon Gatwick
$625
Find similar

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 December 21, 2025.
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

Wed 4/8

9:25 am-10:37 pm

2 stops21h 12m

Seattle/Tacoma Intl

Wed 4/15

10:48 am-5:50 pm

2 stops23h 02m

$597

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sat 6/6

9:25 am-2:30 pm

1 stop13h 05m

Seattle/Tacoma Intl

Sat 6/20

4:30 pm-5:50 pm

1 stop17h 20m

$600

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 4/8

3:40 pm-8:40 pm

1 stop13h 00m

Seattle/Tacoma Intl

Wed 4/15

3:40 pm-2:40 pm

1 stop15h 00m

$621

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Thu 3/19

11:55 am-6:00 pm

1 stop13h 05m

Seattle/Tacoma Intl

Thu 3/26

3:35 pm-10:55 am

1 stop12h 20m

$623

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sun 4/5

3:40 pm-5:55 pm

1 stop34h 15m

Seattle/Tacoma Intl

Sat 4/18

3:40 pm-2:40 pm

1 stop15h 00m

$625

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 4/8

3:40 pm-8:40 pm

1 stop13h 00m

Seattle/Tacoma Intl

Wed 4/15

7:00 pm-2:40 pm

1 stop11h 40m

$626

LondonPortland

LGW - PDX

LGWPDX

London Gatwick

Mon 2/9

1:00 pm-12:38 pm

2 stops31h 38m

Portland

Mon 2/23

10:39 am-6:00 am

1 stop35h 21m

$772

LondonSpokane

LGW - GEG

LGWGEG

London Gatwick

Mon 2/9

7:40 pm-6:49 pm

2 stops31h 09m

Spokane

Fri 2/27

5:51 am-7:00 pm

2 stops29h 09m

$836

LondonSpokane

LGW - GEG

LGWGEG

London Gatwick

Tue 3/10

11:55 am-9:37 pm

2 stops16h 42m

Spokane

Tue 3/17

12:00 pm-10:55 am

2 stops15h 55m

$858

LondonSpokane

LGW - GEG

LGWGEG

London Gatwick

Wed 2/11

7:40 pm-9:13 pm

2 stops33h 33m

Spokane

Sat 2/28

5:51 am-10:50 am

2 stops20h 59m

$860

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 April is, on average, the cheapest month to fly to State of Washington from London Gatwick Airport, with most prices found around $475. If you aren’t able to travel to State of Washington during the month of April, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $536.

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

You could potentially save up to 4% 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

  • 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 $418Free CancellationRating
7.0
592 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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