Cheap flights from London to Seattle

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London to Seattle flight comparison made easy

Below you can see the best fares for your route over the next three months. All fares were found on momondo this week. Browse the quickest and cheapest flights from London to Seattle by changing tabs
Quickest
Cheapest
Lufthansa
Lufthansa
24 Feb
LHR
06:30
London Heathrow airport
16h 13m
2 Stops
14:43
SEA
Seattle/Tacoma Intl airport
Lufthansa
29 Feb
SEA
23:00
Seattle/Tacoma Intl airport
20h 05m
1 Stop
03:05
+2
LHR
London Heathrow airport
314 GBP
Lufthansa
Lufthansa
24 Feb
LHR
06:30
London Heathrow airport
16h 13m
2 Stops
14:43
SEA
Seattle/Tacoma Intl airport
Lufthansa
29 Feb
SEA
23:00
Seattle/Tacoma Intl airport
20h 05m
1 Stop
03:05
+2
LHR
London Heathrow airport
314 GBP
Finnair
Finnair
07 Feb
LHR
09:40
London Heathrow airport
9h 55m
11:35
SEA
Seattle/Tacoma Intl airport
Finnair
10 Feb
SEA
10:25
Seattle/Tacoma Intl airport
9h 25m
03:50
+1
LHR
London Heathrow airport
325 GBP
Norwegian Air UK
Norwegian Air UK
12 Apr
LGW
10:50
London Gatwick airport
9h 55m
12:45
SEA
Seattle/Tacoma Intl airport
Norwegian Air UK
29 Apr
SEA
06:45
Seattle/Tacoma Intl airport
9h 15m
00:00
+1
LGW
London Gatwick airport
418 GBP
Finnair
Finnair
07 Feb
LHR
09:40
London Heathrow airport
9h 55m
11:35
SEA
Seattle/Tacoma Intl airport
Finnair
10 Feb
SEA
10:25
Seattle/Tacoma Intl airport
9h 25m
03:50
+1
LHR
London Heathrow airport
325 GBP
Finnair
Finnair
07 Feb
LHR
09:40
London Heathrow airport
9h 55m
11:35
SEA
Seattle/Tacoma Intl airport
Finnair
10 Feb
SEA
10:25
Seattle/Tacoma Intl airport
9h 25m
03:50
+1
LHR
London Heathrow airport
325 GBP

How to get the cheapest flight from London to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight for your trip
What is the cheapest month to fly to Seattle?
October
The cheapest time of year to fly to Seattle from London is October. The most expensive is July.
What is the cheapest day to fly to Seattle?
Tuesday
The cheapest day of the week is usually Tuesday. The most expensive is usually Sunday.
When is the cheapest time to fly to Seattle?
at midday
London to Seattle flights are approximately 16% more expensive in the evening than at midday
What is the cheapest airline that flies to Seattle?
Air New Zealand
Air New Zealand, United Airlines, and Austrian Airlines are the most popular carriers operating from London to Seattle
What is the cheapest route?
London Heathrow - Seattle/Tacoma Intl
Fly from London Heathrow to Seattle/Tacoma Intl for the best London - Seattle flight prices
When is the cheapest time to book a flight to Seattle?
60 days before
The cheapest time to buy a flight from London to Seattle is approximately 60 days before departure
60
Days before departure
0

Flight information for London to Seattle

Find info about flight duration, direct flights, and airports for your flight from London to Seattle
Fastest flight time 9h 50m The fastest flight from London to Seattle takes 9h 50m.
Direct flights Every day Direct flights go from London to Seattle every day.
Airports in Seattle 3 airports There are 3 airports near Seattle: Seattle King County/Boeing (BFI), Seattle Lake Union Spb (LKE), Seattle/Tacoma Intl (SEA)

Alternative routes for London to Seattle

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
London to Portland
Fastest flight time
10h 19m
Cheapest price
419 GBP
Birmingham to Seattle
Fastest flight time
12h 50m
Cheapest price
431 GBP
Birmingham to Portland
Fastest flight time
15h 56m
Cheapest price
496 GBP

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