Cheap Flights from Seattle, WA to London from $193
On Cheapflightsplus.com you will find 15 direct and 989 connecting flights from Seattle to London. You can compare airfare deals from 21 airlines and multiple travel sites from $193, book and save on cheap plane tickets and last minute offers. Also check out SEA-LON flight schedule to find best flight time, convenient departure and arrival airports.
Flight Information
Below we will explain in detail what the flights cost on the destination from Seattle to London depends on and how to choose the most interesting flight option for you.
Distance between Seattle and London is 7714 miles. Time difference between the cities is 8h. Airplanes depart 05:25 to 23:59 from 3 Seattle airports and arrive 05:25 to 23:59 to 10 London airports. Average flight time is 9h 20m.
- The fastest flight 9h 20m
- Average flight time 9h 20m
- The earliest flight 05:25
- The latest flight 23:59
- Distance 4794 ml
Best Flights from Seattle to London Today
| Price | Departure | Arrival | Flight Duration | Airline | Flight |
|---|---|---|---|---|---|
| from $377 | 13:30 Seattle Seattle-Tacoma Intl | 06:50+1 день London Heathrow | 9h 20m | British Airways | BA52 |
| from $384 | 13:30 Seattle Seattle-Tacoma Intl | 06:50+1 день London Heathrow | 9h 20m | Iberia | IB3508 |
| from $401 | 17:35 Seattle Seattle-Tacoma Intl | 11:20+1 день London Heathrow | 9h 45m | Air France | AF9905 |
| from $193 | 15:45 Seattle Seattle-Tacoma Intl | 11:45+1 день London Gatwick | 12h 0m layover 1h 20m - Reykjavik | Icelandair | FI680 FI470 |
| from $248 | 23:30 Seattle Seattle-Tacoma Intl | 11:45+2 дня London Gatwick | 28h 15m layover 17h 35m - Reykjavik | Icelandair | FI684 FI470 |
| from $232 | 19:00 Seattle Seattle-Tacoma Intl | 20:10+1 день London Gatwick | 17h 10m layover 1h 30m - Reykjavik 3h 10m - Oslo | Icelandair | FI682 FI322 DY1310 |
| from $267 | 23:30 Seattle Seattle-Tacoma Intl | 19:40+2 дня London Gatwick | 36h 10m layover 17h 20m - Reykjavik 5h 25m - Prague | Icelandair | FI684 FI536 W95776 |
The cheapest months to travel to London are july (from 193 $), august (from 193 $), october (from 201 $).
The most expensive months are december (from 595 $), february (from 537 $), january (from 481 $).
What is the lowest airfare Seattle to London?
The cheapest plane ticket found by our users is $193. This airfare is for economy class on one-way FI680 flight by Icelandair for October 7, 2025 which leaves Seattle-Tacoma Intl in Seattle at 15:45 am and arrives at London Heathrow at 20:20.
Flight Schedule Seattle (Washington) to London
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Popular Airlines on the Route
The flight Seattle — London is served by 21 regular airline and 4 low-cost airlines. Most of the flights on this route are operated by KLM - 19 departures per week at the price of from $ 401 . And the most expensive tickets are offered by Aer Lingus airline - from $ 857.
Direct flights
There are 15 nonstop flights on the route. The fastest direct flight is BA52 by British Airways takes 9h 20m and the cheapest is FI680 by Icelandair for $377.
- KL - KLMfrom $401Find
- AS - Alaska Airlinesfrom $510Find
- EI - Aer Lingusfrom $857Find
- AF - Air Francefrom $401Find
- AY - Finnairfrom $566Find
- IB - Iberiafrom $384Find
- VS - Virgin Atlantic Airwaysfrom $467Find
- BA - British Airwaysfrom $377Find
Connecting Flights
There are 989 flights with layovers on the route. The fastest connecting flight is FI682 by Icelandair takes 11h 35m and the cheapest is FI680 by Icelandair for $193.
- KL - KLMfrom $401Find
- AC - Air Canadafrom $382Find
- FI - Icelandairfrom $193Find
- EI - Aer Lingusfrom $473Find
- OS - Austrian Airlinesfrom $500Find
- AF - Air Francefrom $401Find
- SY - Sun Country Airlinesfrom $312Find
- UA - United Airlinesfrom $409Find
- LX - SWISS International Air Linesfrom $422Find
- AS - Alaska Airlinesfrom $264Find
- F9 - Frontier Airlinesfrom $288Find
- SK - SASfrom $368Find
Airports
You can fly from Seattle to London from 3 airports (Boeing Field International Airport, Seattle-Tacoma Intl, Kenmore Air Harbor SPB).
Seattle airports
- Boeing Field International Airport-BFIFind
- Seattle-Tacoma Intl-SEAfrom $193Find
- Kenmore Air Harbor SPB-LKEFind
London airports
- London City-LCYFind
- London-Waterloo-QQWFind
- Heathrow-LHRFind
- Luton-LTNFind
- British Rail Terminal-ZLXFind
- London Biggin Hill-BQHFind
- Stansted-STNFind
- Gatwick-LGWFind
- Ebbsfleet International Rail St-XQEFind
- Stratford International Rail St-XOFFind
Airplanes
There are flights to London from Seattle by 21 airlines that use 1 aircraft brands. They range from huge modern airplanes to small-sized.
- Boeing 767-300 (winglets)from $193Find
Top Domestic Destinations from Seattle
You may also consider searching for discounted plane tickets to some other popular places from Seattle within United States.
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Top International Destinations from Seattle
Our state-of-the art metasearch will definitely provide you with the best airfare on international flights. We’re proud to partner with many reliable travel suppliers located outside the US what gives us an opportunity to offer the most competitive prices on far destinations.
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How to book a plane ticket yourself?
- Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
- Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
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- That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.
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