Cheap flights from London to Seattle

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Flight information for London to Seattle

Find info about flight duration, direct flights, and airports for your flight from London to Seattle
Best price found £253 The best flight deal from London to Seattle found on momondo in the last 72 hours is £253
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)

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?
February
The cheapest time of year to fly to Seattle from London is February. The most expensive is July.
What is the cheapest day to fly to Seattle?
Wednesday
The cheapest day of the week is usually Wednesday. The most expensive is usually Saturday.
When is the cheapest time to fly to Seattle?
in the evening
London to Seattle flights are approximately 16% more expensive in the afternoon than in the evening
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?
41 days before
The cheapest time to buy a flight from London to Seattle is approximately 41 days before departure
60
Days before departure
0

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
15 Apr
07:30
LHR
London Heathrow airport
13h 25m
1 Stop
SEA
12:55
Seattle/Tacoma Intl airport
Lufthansa
22 Apr
00:30
SEA
Seattle/Tacoma Intl airport
29h 30m
1 Stop
LHR
14:00
+1
London Heathrow airport
£328
Norwegian Air UK
Norwegian Air UK
22 Apr
10:50
LGW
London Gatwick airport
9h 55m
SEA
12:45
Seattle/Tacoma Intl airport
Norwegian Air UK
26 Apr
06:45
SEA
Seattle/Tacoma Intl airport
9h 15m
LGW
00:00
+1
London Gatwick airport
£329
Virgin Atlantic
Virgin Atlantic
13 May
14:25
LHR
London Heathrow airport
9h 55m
SEA
16:20
Seattle/Tacoma Intl airport
Virgin Atlantic
19 May
06:16
SEA
Seattle/Tacoma Intl airport
12h 49m
1 Stop
LHR
03:05
+1
London Heathrow airport
£339
Iberia
Iberia
03 Apr
16:25
LHR
London Heathrow airport
9h 45m
SEA
18:10
Seattle/Tacoma Intl airport
Iberia
20 Apr
12:20
SEA
Seattle/Tacoma Intl airport
9h 20m
LHR
05:40
+1
London Heathrow airport
£513
Norwegian Air UK
Norwegian Air UK
22 Apr
10:50
LGW
London Gatwick airport
9h 55m
SEA
12:45
Seattle/Tacoma Intl airport
Norwegian Air UK
26 Apr
06:45
SEA
Seattle/Tacoma Intl airport
9h 15m
LGW
00:00
+1
London Gatwick airport
£329
Delta
Delta
01 May
12:15
LHR
London Heathrow airport
9h 55m
SEA
14:10
Seattle/Tacoma Intl airport
Delta
09 May
10:14
SEA
Seattle/Tacoma Intl airport
12h 16m
1 Stop
LHR
06:30
+1
London Heathrow airport
£343

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 Flights
Fastest flight time
15h 55m
Cheapest price
£404
Birmingham to Portland Flights
Fastest flight time
13h 21m
Cheapest price
£424
Bristol to Portland Flights
Fastest flight time
22h 43m
Cheapest price
£552
Manchester to Portland Flights
Fastest flight time
12h 50m
Cheapest price
£613
London to Bellingham Flights
Fastest flight time
22h 24m
Cheapest price
£1,148
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*Flight prices to Seattle are based on prices for economy tickets found by momondo users during searches within the last 72 hours. These prices may no longer be available.