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Cheap flights from Seattle to London from $329

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Seattle to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:50 am - 2:35 pmSEA  Seattle/Tacoma Intl-STN London Stansted
19h 45m2 stops Vancouver Intl Dublin
Multiple Airlines Logo
6:35 am - 2:22 pmSTN  London Stansted-SEA Seattle/Tacoma Intl
15h 47m2 stops Dublin Vancouver Intl
$773Multiple Airlines
Thu, Oct 1 - Sun, Oct 4
Multiple Airlines Logo
7:00 pm - 9:40 pmSEA  Seattle/Tacoma Intl-STN London Stansted
18h 40m2 stops Reykjavik Keflavik Intl Kastrup Copenhagen
Multiple Airlines Logo
7:55 am - 5:00 pmSTN  London Stansted-SEA Seattle/Tacoma Intl
17h 05m2 stops Stockholm Arlanda Reykjavik Keflavik Intl
$776Multiple Airlines
Wed, Oct 14 - Sat, Nov 14
Multiple Airlines Logo
7:10 pm - 10:25 pmSEA  Seattle/Tacoma Intl-STN London Stansted
19h 15m1 stop Dublin
Multiple Airlines Logo
8:30 am - 5:10 pmSTN  London Stansted-SEA Seattle/Tacoma Intl
16h 40m1 stop Dublin
$777Multiple Airlines
Thu, Oct 1 - Mon, Oct 5
Multiple Airlines Logo
6:05 pm - 11:15 pmSEA  Seattle/Tacoma Intl-STN London Stansted
21h 10m2 stops Frankfurt am Main Venice Marco Polo
Multiple Airlines Logo
6:25 am - 4:00 pmSTN  London Stansted-SEA Seattle/Tacoma Intl
17h 35m2 stops Venice Marco Polo Frankfurt am Main
$777Multiple Airlines
Thu, Oct 15 - Thu, Oct 22
Multiple Airlines Logo
3:40 pm - 9:40 pmSEA  Seattle/Tacoma Intl-STN London Stansted
22h 00m2 stops Reykjavik Keflavik Intl Kastrup Copenhagen
Multiple Airlines Logo
5:55 am - 8:40 pmSTN  London Stansted-SEA Seattle/Tacoma Intl
22h 45m2 stops Kastrup Copenhagen Reykjavik Keflavik Intl
$778Multiple Airlines
Wed, Oct 14 - Sat, Oct 24
Multiple Airlines Logo
4:55 pm - 9:35 pmSEA  Seattle/Tacoma Intl-STN London Stansted
21h 40m2 stops Reykjavik Keflavik Intl Kastrup Copenhagen
Multiple Airlines Logo
6:45 am - 5:00 pmSTN  London Stansted-SEA Seattle/Tacoma Intl
18h 15m2 stops Kastrup Copenhagen Reykjavik Keflavik Intl
$779Multiple Airlines
Sun, Oct 25 - Mon, Nov 2
Multiple Airlines Logo
3:55 pm - 6:45 amSEA  Seattle/Tacoma Intl-STN London Stansted
30h 50m1 stop Kastrup Copenhagen
Multiple Airlines Logo
12:00 pm - 1:45 pmSTN  London Stansted-SEA Seattle/Tacoma Intl
33h 45m2 stops Aarhus Kastrup Copenhagen
$779Multiple Airlines
Sun, Oct 4 - Sat, Oct 10
Multiple Airlines Logo
7:55 am - 7:15 pmSEA  Seattle/Tacoma Intl-STN London Stansted
27h 20m2 stops Toronto Pearson Intl Kastrup Copenhagen
Multiple Airlines Logo
7:20 am - 9:04 pmSTN  London Stansted-SEA Seattle/Tacoma Intl
21h 44m2 stops Kastrup Copenhagen Toronto Pearson Intl
$782Multiple Airlines
Thu, Oct 15 - Thu, Oct 22
Multiple Airlines Logo
2:35 pm - 3:15 pmSEA  Seattle/Tacoma Intl-STN London Stansted
16h 40m2 stops Reykjavik Keflavik Intl Dublin
Multiple Airlines Logo
8:20 am - 5:00 pmSTN  London Stansted-SEA Seattle/Tacoma Intl
16h 40m2 stops Dublin Reykjavik Keflavik Intl
$785Multiple Airlines
Wed, Dec 2 - Mon, Dec 7
Multiple Airlines Logo
7:45 am - 9:35 amSEA  Seattle/Tacoma Intl-STN London Stansted
18h 50m2 stops Toronto Pearson Intl Dublin
Multiple Airlines Logo
10:25 pm - 8:59 pmSTN  London Stansted-SEA Seattle/Tacoma Intl
30h 34m2 stops Dublin Toronto Pearson Intl
$785Multiple Airlines
Sat, Oct 31 - Fri, Nov 6

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Lufthansa flights from Seattle to London Stansted Airport

Our best Lufthansa deals on Seattle to London Stansted Airport flight tickets
Lufthansa
Oct 1
SEA6:50 pmSeattle/Tacoma Intl
12h 50m
1 stop
STN3:40 pmLondon Stansted
Oct 5
STN4:25 pmLondon Stansted
32h 34m
1 stop
SEA4:59 pmSeattle/Tacoma Intl
$802
Lufthansa
Feb 12
SEA2:50 pmSeattle/Tacoma Intl
13h 10m
1 stop
STN12:00 pmLondon Stansted
Feb 20
STN3:40 pmLondon Stansted
29h 20m
1 stop
SEA1:00 pmSeattle/Tacoma Intl
$845
Lufthansa
Sep 30
SEA6:50 pmSeattle/Tacoma Intl
12h 45m
1 stop
STN3:35 pmLondon Stansted
Oct 7
STN11:00 amLondon Stansted
13h 59m
1 stop
SEA4:59 pmSeattle/Tacoma Intl
$853

Turkish Airlines flights from Seattle to London Stansted Airport

Our best Turkish Airlines deals on Seattle to London Stansted Airport flight tickets
Turkish Airlines
Sep 27
SEA7:15 pmSeattle/Tacoma Intl
18h 55m
1 stop
STN10:10 pmLondon Stansted
Nov 4
STN10:55 amLondon Stansted
39h 15m
1 stop
SEA6:10 pmSeattle/Tacoma Intl
$934
Turkish Airlines
Sep 27
SEA7:15 pmSeattle/Tacoma Intl
18h 55m
1 stop
STN10:10 pmLondon Stansted
Nov 3
STN5:20 pmLondon Stansted
32h 50m
1 stop
SEA6:10 pmSeattle/Tacoma Intl
$950
Turkish Airlines
Oct 3
SEA7:15 pmSeattle/Tacoma Intl
30h 40m
1 stop
STN9:55 amLondon Stansted
Oct 20
STN5:35 pmLondon Stansted
31h 45m
1 stop
SEA5:20 pmSeattle/Tacoma Intl
$990

momondo Fare Finder

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

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Depart

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Price

Cheapest round-trip

SeattleLondon

SEA Seattle/Tacoma Intl - STN London Stansted

SEASTN

Seattle/Tacoma Intl

Thu 10/1

10:50 am-2:35 pm

2 stops19h 45m

London Stansted

Sun 10/4

6:35 am-2:22 pm

2 stops15h 47m

$773

SeattleLondon

SEA Seattle/Tacoma Intl - STN London Stansted

SEASTN

Seattle/Tacoma Intl

Wed 10/14

7:00 pm-9:40 pm

2 stops18h 40m

London Stansted

Sat 11/14

7:55 am-5:00 pm

2 stops17h 05m

$776

SeattleLondon

SEA Seattle/Tacoma Intl - STN London Stansted

SEASTN

Seattle/Tacoma Intl

Thu 10/1

7:10 pm-10:25 pm

1 stop19h 15m

London Stansted

Mon 10/5

8:30 am-5:10 pm

1 stop16h 40m

$777

SeattleLondon

SEA Seattle/Tacoma Intl - STN London Stansted

SEASTN

Seattle/Tacoma Intl

Thu 10/15

6:05 pm-11:15 pm

2 stops21h 10m

London Stansted

Thu 10/22

6:25 am-4:00 pm

2 stops17h 35m

$777

SeattleLondon

SEA Seattle/Tacoma Intl - STN London Stansted

SEASTN

Seattle/Tacoma Intl

Wed 10/14

3:40 pm-9:40 pm

2 stops22h 00m

London Stansted

Sat 10/24

5:55 am-8:40 pm

2 stops22h 45m

$778

SeattleLondon

SEA Seattle/Tacoma Intl - STN London Stansted

SEASTN

Seattle/Tacoma Intl

Sun 10/25

4:55 pm-9:35 pm

2 stops21h 40m

London Stansted

Mon 11/2

6:45 am-5:00 pm

2 stops18h 15m

$779

SeattleLondon

SEA Seattle/Tacoma Intl - STN London Stansted

SEASTN

Seattle/Tacoma Intl

Sun 10/4

3:55 pm-6:45 am

1 stop30h 50m

London Stansted

Sat 10/10

12:00 pm-1:45 pm

2 stops33h 45m

$779

SeattleLondon

SEA Seattle/Tacoma Intl - STN London Stansted

SEASTN

Seattle/Tacoma Intl

Thu 10/15

7:55 am-7:15 pm

2 stops27h 20m

London Stansted

Thu 10/22

7:20 am-9:04 pm

2 stops21h 44m

$782
Quickest round-trip

SeattleLondon

SEA Seattle/Tacoma Intl - STN London Stansted

SEASTN

Seattle/Tacoma Intl

Wed 12/2

2:35 pm-3:15 pm

2 stops16h 40m

London Stansted

Mon 12/7

8:20 am-5:00 pm

2 stops16h 40m

$785

SeattleLondon

SEA Seattle/Tacoma Intl - STN London Stansted

SEASTN

Seattle/Tacoma Intl

Sat 10/31

7:45 am-9:35 am

2 stops18h 50m

London Stansted

Fri 11/6

10:25 pm-8:59 pm

2 stops30h 34m

$785

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

Best Price Found

$329

Fastest flight time

16h 25m

Direct flights

None
The best one-way flight to London Stansted Airport from Seattle in the past 72 hours is $329. The best round-trip flight deal from Seattle to London Stansted Airport found on momondo in the last 72 hours is $773.
The fastest flight from Seattle to London Stansted Airport takes 16h 25m
There are no direct flights from Seattle to London Stansted Airport. There are no popular flight routes from Seattle to London Stansted Airport.
Search flight deals

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 25m, 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
Hayes
Luton
Wembley
Dover
Croydon
Richmond
Kingston upon Thames
Stansted
Harrow
Cobham
Watford
Worthing
Slough
Eastbourne
Hook
Uxbridge
Ilford

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.

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