Cheap Flights from London to Seattle, WA from $442

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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

To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights». To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight. Cheapest flights in November: $442 (one-way), $758 (round-trip).

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Best Flights from London to Seattle Today

Take a look at the list of non stop flights and flights with layovers from London to Seattle with the lowest price of $442. Take a look at the list of flights with layovers from London to Seattle from $442. There’re no direct flights. The fastest connecting flight – 12h 45m.

Price	Departure	Arrival	Flight Duration	Airline	Flight
from $442 Find flight	12:15 London Heathrow	17:00 Seattle Seattle-Tacoma Intl	12h 45m layover 1h 35m - Reykjavik	Icelandair	FI451 FI681
from $452 Find flight	11:55 London Gatwick	17:00 Seattle Seattle-Tacoma Intl	13h 5m layover 1h 45m - Reykjavik	Icelandair	FI471 FI681

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*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on April 22, 2025

Flight Schedule London to Seattle (Washington)

Full flight schedule will help you in detecting at what time planes fly from London to Seattle. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.

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

Departure	Arrival	Flight Details	Flight Time	Price
		stop stop	including layover	Find flight from$

*Departure and arrival times - local. Updated on April 22, 2025

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 28, 2025 which leaves Heathrow in London at 12:15 am and arrives at Seattle Seattle-Tacoma Intl at 17:00.

Economy class

$442

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Business class

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First class

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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 - Icelandair

from $442

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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-LCY

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London-Waterloo-QQW

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Heathrow-LHR

from $442
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Luton-LTN

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British Rail Terminal-ZLX

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London Biggin Hill-BQH

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Stansted-STN

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Gatwick-LGW

from $452
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Ebbsfleet International Rail St-XQE

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Stratford International Rail St-XOF

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Seattle airports

Boeing Field International Airport-BFI

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Seattle-Tacoma Intl-SEA

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Kenmore Air Harbor SPB-LKE

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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 $442

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Boeing 757-200 (winglets)

from $452

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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.

London — Miami

from $55

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London — Boston

from $75

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London — Los Angeles

from $313

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London — Chicago

from $70

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London — Las Vegas

from $60

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London — Orlando

from $79

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London — Seattle

from $57

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London — San Francisco

from $58

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London — Atlanta

from $69

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London — Denver

from $59

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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.
Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
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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