Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Washington to London from $226

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 10/4. 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

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Washington to London

Cheap round-trip flights

Logo
8:05 pm - 5:20 pmSEA-LGW
13h 15m1 stop
Logo
11:15 am - 6:20 pmLGW-SEA
15h 05m1 stop
$478
Find Deal
Wed, Nov 26 - Wed, Dec 3
Icelandair Logo
3:45 pm - 2:35 pmSEA-LGW
14h 50m1 stop
Icelandair Logo
3:40 pm - 5:50 pmLGW-SEA
34h 10m1 stop
$480Icelandair
Find Deal
Mon, Oct 6 - Sun, Oct 19
Icelandair Logo
3:45 pm - 2:35 pmSEA-LGW
14h 50m1 stop
Icelandair Logo
3:40 pm - 5:50 pmLGW-SEA
34h 10m1 stop
$481Icelandair
Find Deal
Mon, Oct 6 - Sun, Oct 19
Icelandair Logo
3:45 pm - 2:35 pmSEA-LGW
14h 50m1 stop
Icelandair Logo
3:40 pm - 5:50 pmLGW-SEA
34h 10m1 stop
$482Icelandair
Find Deal
Mon, Oct 6 - Sun, Oct 19
Delta Logo
3:15 pm - 10:00 amSEA-LGW
34h 45m2 stops
Delta Logo
12:00 pm - 11:59 pmLGW-SEA
19h 59m2 stops
$492Delta
Find Deal
Mon, Aug 25 - Thu, Sep 4
Delta Logo
3:15 pm - 10:00 amSEA-LGW
34h 45m2 stops
Delta Logo
12:00 pm - 11:15 pmLGW-SEA
19h 15m1 stop
$493Delta
Find Deal
Mon, Aug 25 - Thu, Sep 4
Delta Logo
5:30 am - 10:00 amSEA-LGW
44h 30m2 stops
Delta Logo
12:00 pm - 11:15 pmLGW-SEA
19h 15m1 stop
$498Delta
Find Deal
Sun, Aug 24 - Wed, Sep 3
SWISS Logo
4:25 pm - 5:50 pmSEA-LGW
17h 25m1 stop
SWISS Logo
6:35 pm - 6:36 pmLGW-SEA
32h 01m2 stops
$513SWISS
Find Deal
Mon, Sep 8 - Wed, Sep 24
SWISS Logo
4:25 pm - 5:50 pmSEA-LGW
17h 25m1 stop
SWISS Logo
6:35 pm - 6:36 pmLGW-SEA
32h 01m2 stops
$518SWISS
Find Deal
Mon, Sep 8 - Mon, Sep 29
Iberia Logo
7:44 am - 7:00 pmSEA-LGW
27h 16m2 stops
Iberia Logo
7:40 pm - 10:41 amLGW-SEA
23h 01m2 stops
$520Iberia
Find Deal
Tue, Jan 20 - Wed, Jan 28

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
Oct 6
SEA3:45 pmSeattle/Tacoma Intl
14h 50m
1 stop
LGW2:35 pmLondon Gatwick
Oct 19
LGW3:40 pmLondon Gatwick
34h 10m
1 stop
SEA5:50 pmSeattle/Tacoma Intl
$480
Find similar
Icelandair
Oct 6
SEA3:45 pmSeattle/Tacoma Intl
14h 50m
1 stop
LGW2:35 pmLondon Gatwick
Oct 19
LGW3:40 pmLondon Gatwick
34h 10m
1 stop
SEA5:50 pmSeattle/Tacoma Intl
$481
Find similar
Icelandair
Oct 6
SEA3:45 pmSeattle/Tacoma Intl
14h 50m
1 stop
LGW2:35 pmLondon Gatwick
Oct 19
LGW3:40 pmLondon Gatwick
34h 10m
1 stop
SEA5:50 pmSeattle/Tacoma Intl
$482
Find similar

Virgin Atlantic flights from State of Washington to London Gatwick Airport

Our best Virgin Atlantic deals on State of Washington to London Gatwick Airport flight tickets
Virgin Atlantic
Aug 19
SEA5:30 amSeattle/Tacoma Intl
20h 30m
2 stops
LGW10:00 amLondon Gatwick
Aug 25
LGW12:00 pmLondon Gatwick
30h 15m
1 stop
SEA10:15 amSeattle/Tacoma Intl
$683
Find similar
Virgin Atlantic
Aug 18
SEA7:18 amSeattle/Tacoma Intl
18h 42m
1 stop
LGW10:00 amLondon Gatwick
Aug 25
LGW12:00 pmLondon Gatwick
30h 15m
1 stop
SEA10:15 amSeattle/Tacoma Intl
$703
Find similar
Virgin Atlantic
Aug 20
PDX7:24 amPortland
18h 36m
1 stop
LGW10:00 amLondon Gatwick
Aug 30
LGW12:00 pmLondon Gatwick
17h 31m
1 stop
PDX9:31 pmPortland
$712
Find similar

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated August 12, 2025.
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

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 11/26

8:05 pm-5:20 pm

1 stop13h 15m

London Gatwick

Wed 12/3

11:15 am-6:20 pm

1 stop15h 05m

$478

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 10/6

3:45 pm-2:35 pm

1 stop14h 50m

London Gatwick

Sun 10/19

3:40 pm-5:50 pm

1 stop34h 10m

$480

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 10/6

3:45 pm-2:35 pm

1 stop14h 50m

London Gatwick

Sun 10/19

3:40 pm-5:50 pm

1 stop34h 10m

$481

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 10/6

3:45 pm-2:35 pm

1 stop14h 50m

London Gatwick

Sun 10/19

3:40 pm-5:50 pm

1 stop34h 10m

$482

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 8/25

3:15 pm-10:00 am

2 stops34h 45m

London Gatwick

Thu 9/4

12:00 pm-11:59 pm

2 stops19h 59m

$492

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 8/25

3:15 pm-10:00 am

2 stops34h 45m

London Gatwick

Thu 9/4

12:00 pm-11:15 pm

1 stop19h 15m

$493

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sun 8/24

5:30 am-10:00 am

2 stops44h 30m

London Gatwick

Wed 9/3

12:00 pm-11:15 pm

1 stop19h 15m

$498

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 9/8

4:25 pm-5:50 pm

1 stop17h 25m

London Gatwick

Wed 9/24

6:35 pm-6:36 pm

2 stops32h 01m

$513

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 9/8

4:25 pm-5:50 pm

1 stop17h 25m

London Gatwick

Mon 9/29

6:35 pm-6:36 pm

2 stops32h 01m

$518

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Tue 1/20

7:44 am-7:00 pm

2 stops27h 16m

London Gatwick

Wed 1/28

7:40 pm-10:41 am

2 stops23h 01m

$520

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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?

In general, January is the cheapest month to fly from State of Washington to London Gatwick Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $557. If you are unable to visit London Gatwick Airport during the month of January, then departing from State of Washington during the month April is also very affordable. Most momondo users find prices during this month for around $563.

What is the cheapest day to depart on your flight to London Gatwick Airport?

The cheapest day to depart from State of Washington to London Gatwick Airport is on a Sunday when prices can be found for as low as $643. Be sure to avoid booking your departure on a Wednesday as prices are generally higher than usual. According to our data, the average ticket price to London Gatwick Airport on Wednesday is $783.

What is the cheapest time of day to depart on your flight to London Gatwick Airport?

Flying to London Gatwick Airport from State of Washington at noon is the least expensive time of day to depart. momondo users have found prices as low as $608 when looking at flights departing at noon. In the morning is when there is more demand to fly to London Gatwick Airport, so prices are often more expensive at around $984 per ticket.

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

Best Price Found

$226

Fastest flight time

11h 10m

Direct flights

None
The best one-way flight to London Gatwick Airport from State of Washington in the past 72 hours is $226. The best round-trip flight deal from State of Washington to London Gatwick Airport found on momondo in the last 72 hours is $478.
The fastest flight from State of Washington to London Gatwick Airport takes 11h 10m
There are no direct flights from State of Washington to London Gatwick Airport. Popular non-direct routes for this connection are Seattle/Tacoma Intl Airport - London Gatwick Airport, Portland Airport - London Gatwick Airport and Bellingham Airport - London Gatwick Airport.
Search flight deals

  • 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 many operators does momondo search for flights from Washington to London Gatwick Airport?

  • How old do you have to be to fly from Washington 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 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.

Best airlines flying from State of Washington to London Gatwick Airport

Compare and see reviews for airlines that fly from State of Washington to London Gatwick Airport with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom $510Free CancellationRating
7.0
526 reviews
Search Icelandair flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Dover
Slough
Luton
Guildford
Milton Keynes
Dartford
Crawley
Hayes
Chelmsford
Stansted
Ilford
Brentwood
Colchester
Folkestone
Watford
Canterbury
Richmond
Wembley

Why use momondo?

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

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 Washington to London for you.

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

momondo does allow users to show only those flights to London from Washington which offer a flexible booking policy as well as other useful filters and features.

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

momondo provides multiple filters to help you find the best flight to London from Washington. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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.

An easier way to manage your London Gatwick Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sun 8/17
Sun 8/24
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to London

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo
Flights to London Heathrow Airportfrom $321
Flights to London City Airportfrom $415
Flights to London Stansted Airportfrom $416
Flights to London Luton Airportfrom $416
Flights to London Southend Airportfrom $435
Flights to Glasgow Intl Airportfrom $426
Flights to Belfast Intl Airportfrom $479
Flights to Belfast City Airportfrom $519