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Cheap flights from Seattle to London from $413

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to London departing on 7/17. 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 Seattle to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:00 pm - 10:55 pm
SEA
-
STN
19h 55m
2 stops
Multiple Airlines Logo
7:00 am - 5:55 pm
STN
-
SEA
18h 55m
2 stops
$681Multiple Airlines
Thu, Jun 4 - Thu, Jun 11
Multiple Airlines Logo
7:00 pm - 12:50 am
SEA
-
STN
21h 50m
2 stops
Multiple Airlines Logo
10:00 pm - 10:05 am
STN
-
SEA
44h 05m
3 stops
$682Multiple Airlines
Fri, May 8 - Mon, May 11
Multiple Airlines Logo
3:40 pm - 12:20 am
SEA
-
STN
24h 40m
2 stops
Multiple Airlines Logo
10:00 pm - 9:07 pm
STN
-
SEA
31h 07m
3 stops
$686Multiple Airlines
Mon, Jun 8 - Wed, Jun 17
Multiple Airlines Logo
3:40 pm - 12:05 am
SEA
-
STN
24h 25m
2 stops
Multiple Airlines Logo
6:30 am - 9:40 am
STN
-
SEA
35h 10m
3 stops
$702Multiple Airlines
Sat, May 2 - Tue, May 12
Multiple Airlines Logo
3:40 pm - 6:50 pm
SEA
-
STN
19h 10m
2 stops
Multiple Airlines Logo
6:20 am - 5:55 pm
STN
-
SEA
19h 35m
2 stops
$704Multiple Airlines
Mon, Apr 27 - Fri, May 1
Multiple Airlines Logo
7:00 pm - 12:50 am
SEA
-
STN
21h 50m
2 stops
Multiple Airlines Logo
10:00 pm - 9:08 pm
STN
-
SEA
31h 08m
2 stops
$713Multiple Airlines
Fri, May 8 - Wed, May 27
Multiple Airlines Logo
3:40 pm - 12:10 am
SEA
-
STN
24h 30m
2 stops
Multiple Airlines Logo
6:35 am - 9:40 am
STN
-
SEA
35h 05m
3 stops
$717Multiple Airlines
Tue, May 5 - Sat, May 9
Multiple Airlines Logo
3:40 pm - 10:55 pm
SEA
-
STN
23h 15m
2 stops
Multiple Airlines Logo
10:00 pm - 9:40 am
STN
-
SEA
43h 40m
3 stops
$718Multiple Airlines
Thu, Jun 4 - Tue, Jun 16
Multiple Airlines Logo
7:00 pm - 12:50 am
SEA
-
STN
21h 50m
2 stops
Multiple Airlines Logo
10:00 pm - 9:08 pm
STN
-
SEA
31h 08m
3 stops
$719Multiple Airlines
Fri, May 8 - Wed, May 27
Multiple Airlines Logo
7:00 pm - 12:50 am
SEA
-
STN
21h 50m
2 stops
Multiple Airlines Logo
10:00 pm - 9:40 am
STN
-
SEA
43h 40m
3 stops
$722Multiple Airlines
Fri, May 8 - Fri, May 15

Turkish Airlines flights from Seattle to London Stansted Airport

Our best Turkish Airlines deals on Seattle to London Stansted Airport flight tickets
Turkish Airlines
Apr 27
SEA7:10 pmSeattle/Tacoma Intl
19h 00m
1 stop
STN10:10 pmLondon Stansted
May 13
STN6:55 amLondon Stansted
18h 20m
1 stop
SEA5:15 pmSeattle/Tacoma Intl
$732
Turkish Airlines
May 5
SEA7:10 pmSeattle/Tacoma Intl
37h 30m
1 stop
STN4:40 pmLondon Stansted
May 19
STN6:55 amLondon Stansted
18h 20m
1 stop
SEA5:15 pmSeattle/Tacoma Intl
$738
Turkish Airlines
Apr 29
SEA7:10 pmSeattle/Tacoma Intl
30h 45m
1 stop
STN9:55 amLondon Stansted
May 6
STN10:50 amLondon Stansted
38h 25m
1 stop
SEA5:15 pmSeattle/Tacoma Intl
$748

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to London Stansted 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 April 22, 2026.
Use the filters below to find and compare flights from Seattle to London Stansted Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Thu 6/4

7:00 pm-10:55 pm

2 stops19h 55m

London Stansted

Thu 6/11

7:00 am-5:55 pm

2 stops18h 55m

$681

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Fri 5/8

7:00 pm-12:50 am

2 stops21h 50m

London Stansted

Mon 5/11

10:00 pm-10:05 am

3 stops44h 05m

$682

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Mon 6/8

3:40 pm-12:20 am

2 stops24h 40m

London Stansted

Wed 6/17

10:00 pm-9:07 pm

3 stops31h 07m

$686

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Sat 5/2

3:40 pm-12:05 am

2 stops24h 25m

London Stansted

Tue 5/12

6:30 am-9:40 am

3 stops35h 10m

$702
Quickest round-trip

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Mon 4/27

3:40 pm-6:50 pm

2 stops19h 10m

London Stansted

Fri 5/1

6:20 am-5:55 pm

2 stops19h 35m

$704

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Fri 5/8

7:00 pm-12:50 am

2 stops21h 50m

London Stansted

Wed 5/27

10:00 pm-9:08 pm

2 stops31h 08m

$713

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Tue 5/5

3:40 pm-12:10 am

2 stops24h 30m

London Stansted

Sat 5/9

6:35 am-9:40 am

3 stops35h 05m

$717

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Thu 6/4

3:40 pm-10:55 pm

2 stops23h 15m

London Stansted

Tue 6/16

10:00 pm-9:40 am

3 stops43h 40m

$718

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Fri 5/8

7:00 pm-12:50 am

2 stops21h 50m

London Stansted

Wed 5/27

10:00 pm-9:08 pm

3 stops31h 08m

$719

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Fri 5/8

7:00 pm-12:50 am

2 stops21h 50m

London Stansted

Fri 5/15

10:00 pm-9:40 am

3 stops43h 40m

$722

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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When to book flights from Seattle to London Stansted Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to London Stansted Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to London Stansted Airport (SEA to STN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to London Stansted Airport

Fastest flight time

16h 50m

Direct flights

None
The fastest flight from Seattle to London Stansted Airport takes 16h 50m
There are no direct flights from Seattle to London Stansted Airport. There are no popular flight routes from Seattle to London Stansted Airport.
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Frequently asked questions about flying from Seattle to London Stansted Airport

  • How far is Seattle/Tacoma Intl to London Stansted by plane?

    There are 4769.5 mi between Seattle/Tacoma Intl and London Stansted. Flights usually cover this in 16h 50m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to London Stansted Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to London Stansted Airport are updated daily.

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to London Stansted Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to London Stansted Airport.

  • What documentation or ID do you need to fly to London Stansted Airport?

    The travel and health documents you'll need for your trip to London Stansted 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 Stansted Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Seattle to London Stansted Airport

  • How do I get Price Alerts for flights from Seattle to London Stansted Airport?

    Confirm your travel details to search for the latest offers for flights from Seattle to London Stansted Airport. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from Seattle to London Stansted Airport with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Gatwick
Milton Keynes
Dover
Luton
Hayes
Crawley
Slough
Wembley
Stansted
Watford
Croydon
Brentwood
Dartford
Cobham
Folkestone
Guildford
Romford
Harrow
Uxbridge

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from Seattle.

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

All flight searches from Seattle to London on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search for Seattle to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to London from Seattle are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your London Stansted 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.
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