Flights from Seattle to London

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Seattle to London 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 Seattle to London by changing tabs
Quickest
Cheapest
KLM
KLM
30 Sep
SEA
08:20
Seattle/Tacoma Intl airport
9h 25m
01:45
+1
LHR
London Heathrow airport
KLM
08 Oct
LHR
10:55
London Heathrow airport
13h 55m
1 Stop
16:50
SEA
Seattle/Tacoma Intl airport
317 GBP
Delta
Delta
14 Oct
SEA
08:20
Seattle/Tacoma Intl airport
9h 25m
01:45
+1
LHR
London Heathrow airport
Delta
23 Oct
LHR
09:40
London Heathrow airport
15h 10m
1 Stop
16:50
SEA
Seattle/Tacoma Intl airport
317 GBP
KLM
KLM
03 Oct
SEA
08:20
Seattle/Tacoma Intl airport
9h 25m
01:45
+1
LHR
London Heathrow airport
KLM
10 Oct
LHR
10:55
London Heathrow airport
13h 55m
1 Stop
16:50
SEA
Seattle/Tacoma Intl airport
317 GBP
Norwegian Air UK
Norwegian Air UK
06 Oct
SEA
06:45
Seattle/Tacoma Intl airport
9h 15m
00:00
+1
LGW
London Gatwick airport
Norwegian Air UK
13 Oct
LGW
11:00
London Gatwick airport
9h 55m
12:55
SEA
Seattle/Tacoma Intl airport
381 GBP
British Airways
British Airways
24 Nov
SEA
10:25
Seattle/Tacoma Intl airport
9h 25m
03:50
+1
LHR
London Heathrow airport
British Airways
05 Dec
LHR
09:40
London Heathrow airport
9h 55m
11:35
SEA
Seattle/Tacoma Intl airport
326 GBP
British Airways
British Airways
26 Nov
SEA
10:25
Seattle/Tacoma Intl airport
9h 25m
03:50
+1
LHR
London Heathrow airport
British Airways
05 Dec
LHR
09:40
London Heathrow airport
9h 55m
11:35
SEA
Seattle/Tacoma Intl airport
326 GBP

How to get the cheapest flight from Seattle to London

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 ?
April
The cheapest time of year to fly to London from Seattle is April. The most expensive is June.
WHAT IS THE CHEAPEST DAY TO FLY ?
Monday
The cheapest day of the week is usually Monday. The most expensive is usually Friday.
WHEN IS THE CHEAPEST TIME TO FLY ?
in the morning
Seattle to London flights are approximately 108% more expensive in the evening than in the morning
WHAT IS THE CHEAPEST AIRLINE THAT FLIES ?
easyJet
easyJet, SWISS, and Brussels Airlines are the most popular carriers operating from Seattle to London
WHAT IS THE CHEAPEST ROUTE?
Seattle/Tacoma Intl - London Heathrow
Fly from Seattle/Tacoma Intl to London Heathrow for the best Seattle - London flight prices
WHEN IS THE CHEAPEST TIME TO BOOK A FLIGHT ?
60 days before
The cheapest time to buy a flight from Seattle to London is approximately 60 days before departure
60
Days before departure
0

Flight information for Seattle to London

Find info about flight duration, direct flights, and airports for your flight from Seattle to London
Fastest flight time 9h 10m The fastest flight from Seattle to London takes 9h 10m.
Direct flights Every day Direct flights go from Seattle to London every day.
Airports in London 6 airports There are 6 airports near London: London City (LCY), London Heathrow (LHR), London Luton (LTN), London Stansted (STN), London Gatwick (LGW), London Southend (SEN)

Alternative routes for Seattle to London

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Seattle to Birmingham
Fastest flight time
11h 25m
Cheapest price
457 GBP
Seattle to Manchester
Fastest flight time
9h 05m
Cheapest price
420 GBP
Portland to London
Fastest flight time
9h 58m
Cheapest price
410 GBP
Portland to Manchester
Fastest flight time
14h 45m
Cheapest price
513 GBP
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