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Flights from Seattle to London
Cheap flight deals from Seattle to London
We've found these cheap flights for you. You can book one-way or round-trip flight tickets.
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Round-trip
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One way
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Cheapest nonstopSEA 20:209h 20mNonstopLHR 13:40Seattle - London | Wed, Apr 16 | IberiaLHR 09:509h 45mNonstopSEA 11:35London - Seattle | Wed, Apr 23 | IberiaAED 2,191 AED 3,03628% OFF28% OFFAED 3,036 AED 2,191
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SEA 20:209h 20mNonstopLHR 13:40Seattle - London | Tue, Apr 29 | IberiaLHR 16:309h 50mNonstopSEA 18:20London - Seattle | Tue, May 6 | IberiaAED 2,216 AED 3,03627% OFF27% OFFAED 3,036 AED 2,216
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SEA 15:3512h 45m1 stopsLHR 12:20Seattle - London | Fri, Apr 25 | United AirlinesLHR 06:3013h 55m1 stopsSEA 12:25London - Seattle | Sun, Apr 27 | LufthansaAED 1,840 AED 3,03639% OFF39% OFFAED 3,036 AED 1,840
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SEA 15:4512h 10m1 stopsLHR 11:55Seattle - London | Fri, Apr 25 | IcelandairLGW 10:5517h 47m1 stopsSEA 20:42London - Seattle | Fri, May 2 | Norse Atlantic AirwaysAED 1,92037% OFFAED 3,036 AED 1,920
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SEA 15:4512h 10m1 stopsLHR 11:55Seattle - London | Tue, May 20 | IcelandairLGW 15:4027h 45m1 stopsSEA 11:25London - Seattle | Mon, May 26 | IcelandairAED 1,98035% OFFAED 3,036 AED 1,980
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SEA 19:0011h 40m1 stopsLGW 14:40Seattle - London | Sun, Apr 27 | IcelandairLGW 10:5517h 47m1 stopsSEA 20:42London - Seattle | Sun, May 4 | Norse Atlantic AirwaysAED 1,98635% OFFAED 3,036 AED 1,986
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SEA 15:4512h 10m1 stopsLHR 11:55Seattle - London | Sun, May 18 | IcelandairLGW 15:4027h 45m1 stopsSEA 11:25London - Seattle | Thu, May 22 | IcelandairAED 2,00034% OFFAED 3,036 AED 2,000
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SEA 19:0017h 20m1 stopsLHR 20:20Seattle - London | Mon, May 19 | IcelandairLGW 10:5517h 40m1 stopsSEA 20:35London - Seattle | Wed, May 21 | Norse Atlantic AirwaysAED 2,01434% OFFAED 3,036 AED 2,014
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SEA 19:0011h 35m1 stopsLGW 14:35Seattle - London | Mon, Apr 28 | IcelandairLGW 15:4013h1 stopsSEA 20:40London - Seattle | Fri, May 2 | IcelandairAED 2,01434% OFFAED 3,036 AED 2,014
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SEA 19:0017h 20m1 stopsLHR 20:20Seattle - London | Thu, May 8 | IcelandairLGW 15:4013h1 stopsSEA 20:40London - Seattle | Sun, May 11 | IcelandairAED 2,02133% OFFAED 3,036 AED 2,021
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SEA 19:0017h 20m1 stopsLHR 20:20Seattle - London | Sat, May 10 | IcelandairLHR 21:2528h 25m1 stopsSEA 17:50London - Seattle | Sun, May 18 | IcelandairAED 2,02133% OFFAED 3,036 AED 2,021
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SEA 19:0011h 40m1 stopsLGW 14:40Seattle - London | Tue, May 6 | IcelandairLGW 15:4013h1 stopsSEA 20:40London - Seattle | Sun, May 11 | IcelandairAED 2,03433% OFFAED 3,036 AED 2,034
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SEA 13:0017h 25m1 stopsLON Invalid DateSeattle - London | Fri, Apr 18 | Normal AirlineLON 15:006hNonstopSEA 16:00London - Seattle | Sun, Apr 20 | Normal AirlineFind More FlightsFind More Flights
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Cheapest nonstopSEA 13:309h 20mNonstopLHR 06:50Seattle - London | Tue, Apr 29 | IberiaAED 1,425 AED 1,95527% OFF27% OFFAED 1,955 AED 1,425
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SEA 17:359h 45mNonstopLHR 11:20Seattle - London | Tue, May 13 | Virgin AtlanticAED 1,427 AED 1,95527% OFF27% OFFAED 1,955 AED 1,427
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SEA 19:0011h 40m1 stopsLGW 14:40Seattle - London | Fri, May 16 | IcelandairAED 778 AED 1,95560% OFF60% OFFAED 1,955 AED 778
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SEA 15:4520h 35m1 stopsLHR 20:20Seattle - London | Thu, May 15 | IcelandairAED 77860% OFFAED 1,955 AED 778
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SEA 19:0032h 45m1 stopsLGW 11:45Seattle - London | Sun, May 18 | IcelandairAED 78560% OFFAED 1,955 AED 785
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SEA 23:3028h 25m1 stopsLHR 11:55Seattle - London | Wed, May 21 | IcelandairAED 79359% OFFAED 1,955 AED 793
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SEA 15:4520h 35m1 stopsLHR 20:20Seattle - London | Thu, May 8 | IcelandairAED 80159% OFFAED 1,955 AED 801
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SEA 19:0017h 20m1 stopsLHR 20:20Seattle - London | Mon, May 19 | IcelandairAED 82657% OFFAED 1,955 AED 826
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SEA 19:0032h 55m1 stopsLHR 11:55Seattle - London | Wed, Apr 23 | IcelandairAED 87255% OFFAED 1,955 AED 872
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SEA 15:4512h 10m1 stopsLHR 11:55Seattle - London | Fri, Apr 25 | IcelandairAED 88155% OFFAED 1,955 AED 881
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SEA 15:4512h 10m1 stopsLHR 11:55Seattle - London | Wed, Apr 30 | IcelandairAED 92253% OFFAED 1,955 AED 922
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SEA 15:4512h 10m1 stopsLHR 11:55Seattle - London | Fri, May 2 | IcelandairAED 1,30034% OFFAED 1,955 AED 1,300
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SEA 13:0017h 25m1 stopsLON Invalid DateSeattle - London | Fri, Apr 18 | Normal AirlineFind More FlightsFind More Flights
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Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.
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Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.
Frequently Asked Questions
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When are flight tickets from Seattle (SEA) to London (LON) the cheapest?
Airlines adjust prices for flights from Seattle to London based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays. -
How much do flights from Seattle (SEA) to London (LON) cost?
According to Trip.com's data, the lowest price is around AED 3,529. -
How long does it take to fly from Seattle (SEA) to London (LON)?
It takes about 9 hours 31 minutes to fly from Seattle (SEA) to London (LON). -
What are the most popular airlines that fly from Seattle (SEA) to London (LON)?
Airlines with flights from Seattle (SEA) to London (LON): Iberia, Alaska Airlines, Delta Air Lines, Scandinavian Airlines, Aer Lingus, Aeromexico, American Airlines, KLM, Virgin Atlantic, Finnair, Air France and British Airways. -
How many airports are there in London (LON)?
There are 6 airport(s) near London (LON): London City Airport, London Gatwick Airport, Heathrow Airport, London Luton Airport, London Southend Airport and London Stansted Airport.
How to find a cheap flight from Seattle to London
Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Seattle to London. Book your flights at the right time and save more.
Being flexible with your dates to get the cheapest Seattle to London ticket.
Tap "Date" on flight search bar to scan through the calender for Seattle to London airfare over next 6 months in 2025. If you would like to fly in next 3 months, it seems the cheapest date is on Tue, Apr 29 at AED 1425 for one-way flights.
Compare cheap Seattle to London flight deals from over hundreds of airlines.
Our extensive search allows you to compare prices from over 500 airlines to choose the cheapest flight tickets from Seattle to London. The cheapest airline operating is Iberia.
Set up a Price Alert
By setting up a Price Alert for your Seattle to London route, you can easily track the price of your airline tickets from without manually checking every day.
Don't miss cheap Seattle to London flight deals and promo codes.
You can always get the latest deals through Trip.com Deals and Promo Codes for cheap flights. If registering a free membership, you can receive more deals for your flights.
Book early or wait unitl the last minute.
It's always better to book early. Flight tickets tend to be the cheapest when they are first released, normally about a year before the departure date. So, check online as soon as the flights you want become available. If you miss the cheapest time, you can still find lower-priced tickets as the flight date approaches.
Search for flights on the go.
To get the best flight booking experience on the go, download Trip.com and search for cheap flight tickets from Seattle to London to get exclusive deals for you.
Flight Info | Seattle to London
Cheapest one-way flight price | AED 777 |
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Cheapest return ticket price | AED 2,190 |
Off-season for travel | May |
Peak season for travel | June |
Flight distance | 7,711.56 km |
Average flight time | 9 hours 31 minutes |
Popular airline | Alaska Airlines |
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