Cheap Flights from London to Seattle, WA from $442
On Cheapflightsplus.com you will find 2 connecting flights from London to Seattle. You can compare airfare deals from 1 airlines and multiple travel sites from $442, book and save on cheap plane tickets and last minute offers. Also check out LON-SEA flight schedule to find best flight time, convenient departure and arrival airports.
Find One-Way and Round-Trip London to Seattle Flight Deals
Best Flights from London to Seattle Today
Price | Departure | Arrival | Flight Duration | Airline | Flight |
---|---|---|---|---|---|
from $442 | 12:15 London Heathrow | 17:00 Seattle Seattle-Tacoma Intl | 12h 45m layover 1h 35m - Reykjavik | Icelandair | FI451 FI681 |
from $452 | 11:55 London Gatwick | 17:00 Seattle Seattle-Tacoma Intl | 13h 5m layover 1h 45m - Reykjavik | Icelandair | FI471 FI681 |
Flight Schedule London to Seattle (Washington)
Departure | Arrival | Flight Details | Flight Duration | Price |
---|---|---|---|---|
11:55 — 17:00
|
11:50 — 15:10
FI471
Icelandair
London — Reykjavik
1h 45m stop
17:05 — 17:00
FI681
Icelandair
Reykjavik — Seattle
|
13h 5m including layover |
Find flight
from$452 |
|
12:15 — 17:00
|
12:15 — 15:30
FI451
Icelandair
London — Reykjavik
1h 35m stop
17:05 — 18:00
FI681
Icelandair
Reykjavik — Seattle
|
12h 45m including layover |
Find flight
from$442 |
Flight Information
Below we will explain in detail what the flights cost on the destination from London to Seattle depends on and how to choose the most interesting flight option for you.
Distance between London and Seattle is 7714 miles. Time difference between the cities is 8h. Airplanes depart 11:55 to 12:15 from 10 London airports and arrive 11:55 to 12:15 to 3 Seattle airports. Average flight time is 12h 55m.
- The fastest flight 12h 45m
- Average flight time 12h 55m
- The earliest flight 11:55
- The latest flight 12:15
- Distance 4794 ml
The cheapest months to travel to Seattle are april (from 442 $), january (from 685 $), february (from 693 $).
The most expensive months are november (from 753 $), december (from 707 $), february (from 693 $).
What is the lowest airfare London to Seattle?
The cheapest plane ticket found by our users is $442. This airfare is for economy class on one-way FI451 flight by Icelandair for April 7, 2025 which leaves Heathrow in London at 12:15 am and arrives at Seattle Seattle-Tacoma Intl at 17:00.
Popular Airlines on the Route
The flight London — Seattle is served by 1 regular airline . Most of the flights on this route are operated by Icelandair - 2 departures per week at the price of from $ 442 . And the most expensive tickets are offered by Icelandair airline - from $ 452.
Direct flights
There’re no direct flights on this route. Try flights with stops.
Connecting Flights
There are 2 flights with layovers on the route. The fastest connecting flight is FI451 by Icelandair takes 12h 45m and the cheapest is FI451 by Icelandair for $442.
- FI - Icelandairfrom $442Find
Airports
You can fly from London to Seattle from 10 airports (London City, London-Waterloo, Heathrow, Luton, British Rail Terminal, London Biggin Hill, Stansted, Gatwick, Ebbsfleet International Rail St, Stratford International Rail St).
London airports
- London City-LCYFind
- London-Waterloo-QQWFind
- Heathrow-LHRfrom $442Find
- Luton-LTNFind
- British Rail Terminal-ZLXFind
- London Biggin Hill-BQHFind
- Stansted-STNFind
- Gatwick-LGWfrom $452Find
- Ebbsfleet International Rail St-XQEFind
- Stratford International Rail St-XOFFind
Seattle airports
- Boeing Field International Airport-BFIFind
- Seattle-Tacoma Intl-SEAFind
- Kenmore Air Harbor SPB-LKEFind
Airplanes
There are flights to Seattle from London by 1 airlines that use 2 aircraft brands. They range from huge modern airplanes to small-sized.
- Boeing 767-300 (winglets)from $442Find
- Boeing 757-200 (winglets)from $452Find
Top International Destinations from London
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»
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