SEA - STN

$342 Find Cheap Flights from Seattle to London Stansted Airport - Compare and Save

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Everything you should know

Cheapest round-trip
$740
Typical prices: $618-$909
Multiple Airlines
Sat 11/17Sat 11/24
SEA - STN • 2 stops
Cheapest one-way
$342
Typical prices: $251-$327
Multiple Airlines
Sat 11/10
SEA - STN • 3 stops
Nonstop flights
Not available
There are currently no direct flights between Seattle and London Stansted Airport. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
April
Cheapest • 44% price drop
July
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Kastrup Copenhagen (CPH)
Cheapest • Avg $716 (round-trip)
Istanbul (IST)
Shortest trip • 34h 36m (one-way)
Insights
Insights
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We hope you love your trip to London Stansted Airport!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Stansted (SEA-STN)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Stansted

Tue, Nov 17 - Tue, Nov 24
Multiple Airlines Logo
2:35 pm - 3:50 pmSEA  Seattle/Tacoma Intl-STN London Stansted
17h 15m2 stops Reykjavik Keflavik Intl Dublin
Multiple Airlines Logo
7:15 am - 5:00 pmSTN  London Stansted-SEA Seattle/Tacoma Intl
17h 45m2 stops Dublin Reykjavik Keflavik Intl
$740Multiple Airlines
Tue, Nov 17 - Tue, Nov 24
Multiple Airlines Logo
2:35 pm - 3:50 pmSEA  Seattle/Tacoma Intl-STN London Stansted
17h 15m2 stops Reykjavik Keflavik Intl Dublin
Multiple Airlines Logo
7:15 am - 5:00 pmSTN  London Stansted-SEA Seattle/Tacoma Intl
17h 45m2 stops Dublin Reykjavik Keflavik Intl
$741Multiple Airlines
Fri, Nov 13 - Fri, Nov 20
Multiple Airlines Logo
7:45 am - 3:15 pmSEA  Seattle/Tacoma Intl-STN London Stansted
23h 30m3 stops Toronto Pearson Intl Frankfurt am Main Stockholm Arlanda
Multiple Airlines Logo
8:25 am - 12:00 pmSTN  London Stansted-SEA Seattle/Tacoma Intl
35h 35m2 stops Stockholm Arlanda Frankfurt am Main
$751Multiple Airlines
Mon, Nov 16 - Tue, Nov 24
Multiple Airlines Logo
1:50 pm - 5:50 pmSEA  Seattle/Tacoma Intl-STN London Stansted
20h 00m2 stops Frankfurt am Main Kastrup Copenhagen
Multiple Airlines Logo
6:50 pm - 12:00 pmSTN  London Stansted-SEA Seattle/Tacoma Intl
25h 10m2 stops Kastrup Copenhagen Frankfurt am Main
$755Multiple Airlines
Wed, Jan 27 - Wed, Feb 3
Multiple Airlines Logo
2:35 pm - 11:20 pmSEA  Seattle/Tacoma Intl-STN London Stansted
24h 45m2 stops Reykjavik Keflavik Intl Dublin
Multiple Airlines Logo
7:15 am - 5:00 pmSTN  London Stansted-SEA Seattle/Tacoma Intl
17h 45m2 stops Dublin Reykjavik Keflavik Intl
$757Multiple Airlines
Wed, Nov 25 - Tue, Dec 1
Multiple Airlines Logo
2:35 pm - 11:45 pmSEA  Seattle/Tacoma Intl-STN London Stansted
25h 10m2 stops Reykjavik Keflavik Intl Kastrup Copenhagen
Multiple Airlines Logo
8:15 am - 5:00 pmSTN  London Stansted-SEA Seattle/Tacoma Intl
16h 45m2 stops Kastrup Copenhagen Reykjavik Keflavik Intl
$758Multiple Airlines
Mon, Nov 23 - Mon, Nov 30
Multiple Airlines Logo
2:35 pm - 9:55 pmSEA  Seattle/Tacoma Intl-STN London Stansted
23h 20m2 stops Reykjavik Keflavik Intl Dublin
Multiple Airlines Logo
10:35 pm - 5:00 pmSTN  London Stansted-SEA Seattle/Tacoma Intl
26h 25m2 stops Dublin Reykjavik Keflavik Intl
$760Multiple Airlines
Sun, Jan 24 - Sat, Jan 30
Multiple Airlines Logo
2:35 pm - 9:35 pmSEA  Seattle/Tacoma Intl-STN London Stansted
23h 00m2 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
$763Multiple Airlines
Mon, Nov 16 - Tue, Nov 24
Multiple Airlines Logo
1:50 pm - 5:50 pmSEA  Seattle/Tacoma Intl-STN London Stansted
20h 00m2 stops Frankfurt am Main Kastrup Copenhagen
Multiple Airlines Logo
6:50 pm - 12:00 pmSTN  London Stansted-SEA Seattle/Tacoma Intl
25h 10m2 stops Kastrup Copenhagen Frankfurt am Main
$767Multiple Airlines
Fri, Dec 4 - Fri, Dec 11
Multiple Airlines Logo
8:40 am - 3:15 pmSEA  Seattle/Tacoma Intl-STN London Stansted
22h 35m3 stops Vancouver Intl Frankfurt am Main Stockholm Arlanda
Multiple Airlines Logo
8:25 am - 12:00 pmSTN  London Stansted-SEA Seattle/Tacoma Intl
35h 35m2 stops Stockholm Arlanda Frankfurt am Main
$772Multiple Airlines
Booking Insights

Price, demand and travel trends for Seattle to London Stansted Airport flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

What’s the most popular layover airport when flying from Seattle to London Stansted Airport?

Kastrup Copenhagen (CPH) is the most popular layover for the Seattle to London Stansted Airport route. 67% of KAYAK users who booked 1-stop round-trips over the past 3 months connected via CPH.

What is the cheapest layover airport when flying from Seattle to London Stansted Airport?

Flights via Kastrup Copenhagen (CPH) offer the most affordable fares, with an average round-trip price of $716. Based on KAYAK data over the past 3 months.

When flying from Seattle to London Stansted Airport which airport offers the shortest layover?

Kastrup Copenhagen (CPH) had the shortest average connection time for Seattle to London Stansted Airport layovers at 8h 38m over the past 3 months.

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Key details for Seattle to London Stansted Airport flights

Cheapest flight

$342
The most popular month to fly with an average 36% increase in travelers.
One-way flight from Seattle to London Stansted Airport

When to book flights from Seattle to Stansted

Are your dates flexible? Find out the best times to travel from Seattle to Stansted based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Seattle to London Stansted Airport flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from Seattle to London Stansted Airport?

    Only Economy Class is available on flights from Seattle to London Stansted Airport.

  • How long is a flight from Seattle to London Stansted Airport?

    A nonstop flight from Seattle to London Stansted Airport takes 00m, covering 4,778 miles.

  • Do I need a passport to fly from Seattle to London Stansted Airport?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Seattle to London Stansted Airport flight?

    Round-trip flights from Seattle to London Stansted Airport range from $618 to $909, with an average of $800 over the past 12 months. Anything below $618 counts as a good deal.

  • How are flight prices from Seattle to London Stansted Airport looking right now?

    One-way fares from Seattle to London Stansted Airport are currently higher than usual. Average one-way flight prices are about $361, which is 24% above the typical average for this route.

  • What car rental options are available at London Stansted Airport (STN)?

    London Stansted Airport (STN) hosts 5 major car rental companies, with daily rates averaging $39 for economy cars. Top options include:

    • GREEN MOTION
    • DRIVALIA
    • Europcar
    • Alamo
    • U-Save

  • Which airports can I use when flying from Seattle to London Stansted Airport?

    Flights from Seattle to London Stansted Airport usually depart from Seattle/Tacoma Intl (SEA) and arrive at London Stansted (STN).

  • Which airports do connecting flights from Seattle to London Stansted Airport pass through?

    Connecting flights from Seattle to London Stansted Airport most commonly pass through:

    • Kastrup Copenhagen (CPH) - 67% of one-stop connections
    • Istanbul (IST) - 33% of one-stop connections

  • Can I save money by using flexible dates for flights from Seattle to London Stansted Airport?

    Yes. Flexible dates can save you up to 59% on flights from Seattle to London Stansted Airport. Monday is the cheapest departure day at $447 round-trip on average, while Friday is the most expensive at $1,078, a difference of $631.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different layover airport from Seattle to London Stansted Airport?

    Flying via Kastrup Copenhagen (CPH) gives the shortest average 1-stop total travel time at 14h 08m, compared with 34h 36m via Istanbul (IST).

  • What is the time difference between Seattle and London Stansted Airport?

    London Stansted Airport is 7 hours ahead of Seattle (British Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in London Stansted Airport?

    Some of the most popular sights in London Stansted Airport are Hyde Park and Buckingham Palace. These are among the most viewed places in London Stansted Airport on KAYAK.

Your guide to booking Seattle to London Stansted Airport flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Monday departure and avoid flying on Friday. On this route, Monday flights average $447, about $631 less than Friday fares (59% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Seattle to London Stansted Airport trip for April. Fares historically average $447 round-trip in that month - typically $489 less than the most expensive month, which is June (based on the last 12 months).

More options for your flight from Seattle to Stansted

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