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
09 Oct
LHR
07:30
London Heathrow airport
13h 25m
1 Stop
12:55
SEA
Seattle/Tacoma Intl airport
Lufthansa
16 Oct
SEA
05:20
Seattle/Tacoma Intl airport
15h 30m
1 Stop
04:50
+1
LHR
London Heathrow airport
294 GBP
Lufthansa
Lufthansa
09 Oct
LHR
07:30
London Heathrow airport
13h 25m
1 Stop
12:55
SEA
Seattle/Tacoma Intl airport
Lufthansa
16 Oct
SEA
05:20
Seattle/Tacoma Intl airport
15h 30m
1 Stop
04:50
+1
LHR
London Heathrow airport
294 GBP
SWISS
SWISS
17 Oct
LHR
09:40
London Heathrow airport
20h 10m
2 Stops
21:50
SEA
Seattle/Tacoma Intl airport
SWISS
24 Oct
SEA
08:25
Seattle/Tacoma Intl airport
12h 25m
1 Stop
04:50
+1
LHR
London Heathrow airport
312 GBP
Delta
Delta
13 Nov
LHR
12:25
London Heathrow airport
9h 50m
14:15
SEA
Seattle/Tacoma Intl airport
Delta
04 Dec
SEA
09:50
Seattle/Tacoma Intl airport
9h 20m
03:10
+1
LHR
London Heathrow airport
317 GBP
Virgin Atlantic
Virgin Atlantic
31 Oct
LHR
12:25
London Heathrow airport
9h 50m
15:15
SEA
Seattle/Tacoma Intl airport
Virgin Atlantic
06 Nov
SEA
09:50
Seattle/Tacoma Intl airport
9h 20m
03:10
+1
LHR
London Heathrow airport
326 GBP
KLM
KLM
26 Feb
LHR
12:25
London Heathrow airport
9h 50m
14:15
SEA
Seattle/Tacoma Intl airport
KLM
07 Mar
SEA
09:50
Seattle/Tacoma Intl airport
9h 20m
03:10
+1
LHR
London Heathrow airport
327 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 8% more expensive in the afternoon than at midday
What is the cheapest airline that flies to Seattle?
Air New Zealand
Air New Zealand, Austrian Airlines, and Norwegian 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 40m The fastest flight from London to Seattle takes 9h 40m.
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 44m
Cheapest price
342 GBP
Birmingham to Seattle
Fastest flight time
12h 52m
Cheapest price
362 GBP
Manchester to Seattle
Fastest flight time
12h 15m
Cheapest price
419 GBP
Birmingham to Portland
Fastest flight time
16h 46m
Cheapest price
478 GBP
Manchester to Portland
Fastest flight time
13h 38m
Cheapest price
485 GBP
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