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Cheap flights from Seattle to London from $236

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 9/30. 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

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Find the cheapest flights from Seattle to London

Cheap round-trip flights

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7:35 pm - 6:00 pmSEA-STN
14h 25m1 stop
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8:15 am - 5:50 pmSTN-SEA
17h 35m1 stop
Sun, Aug 3 - Tue, Aug 19
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7:35 pm - 6:10 pmSEA-STN
14h 35m1 stop
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11:15 am - 5:50 pmSTN-SEA
14h 35m1 stop
Tue, Aug 26 - Tue, Sep 2
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7:35 pm - 4:20 pmSEA-STN
12h 45m1 stop
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6:55 am - 5:50 pmSTN-SEA
18h 55m1 stop
Wed, Sep 10 - Thu, Sep 25
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7:20 am - 8:55 pmSEA-STN
29h 35m2 stops
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10:00 pm - 8:41 pmSTN-SEA
30h 41m2 stops
Wed, Aug 13 - Wed, Aug 20
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7:35 pm - 4:55 pmSEA-STN
13h 20m1 stop
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8:15 am - 5:50 pmSTN-SEA
17h 35m1 stop
Sun, Aug 3 - Tue, Aug 19
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7:35 pm - 6:00 pmSEA-STN
14h 25m1 stop
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8:15 am - 5:50 pmSTN-SEA
17h 35m1 stop
Sun, Aug 3 - Tue, Aug 19
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7:35 pm - 6:00 pmSEA-STN
14h 25m1 stop
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8:15 am - 5:50 pmSTN-SEA
17h 35m1 stop
Sun, Aug 3 - Tue, Aug 19
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7:20 am - 8:55 pmSEA-STN
29h 35m2 stops
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10:00 pm - 8:41 pmSTN-SEA
30h 41m2 stops
Wed, Aug 13 - Wed, Aug 20
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8:05 pm - 6:20 pmSEA-STN
14h 15m1 stop
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8:30 am - 6:20 pmSTN-SEA
17h 50m1 stop
Mon, Nov 17 - Wed, Nov 26
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9:05 pm - 5:50 pmSEA-STN
13h 45m1 stop
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8:30 am - 6:20 pmSTN-SEA
17h 50m1 stop
Wed, Oct 29 - Wed, Nov 5

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

$236

Fastest flight time

11h 45m

Direct flights

None
The best one-way flight to London Stansted Airport from Seattle in the past 72 hours is $236. The best round-trip flight deal from Seattle to London Stansted Airport found on momondo in the last 72 hours is $402.
The fastest flight from Seattle to London Stansted Airport takes 11h 45m
There are no direct flights from Seattle to London Stansted Airport. Popular non-direct route for this connection is Seattle/Tacoma Intl Airport - 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 11h 45m, 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.


  • 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
Croydon
Luton
Slough
Dover
Dartford
Guildford
Stansted
Hayes
Milton Keynes
Ilford
Colchester
Chelmsford
Canterbury
Watford
Richmond
Wembley
Dagenham
St. Albans

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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1 adult
Sun 7/13
Sun 7/20

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