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Cheap flights from Seattle to London
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
Lufthansa
14 Oct
SEA
08:25
Seattle/Tacoma Intl airport
12h 25m
1 Stop
04:50
+1
LHR
London Heathrow airport
23 Oct
LHR
15:05
London Heathrow airport
13h 31m
1 Stop
20:36
SEA
Seattle/Tacoma Intl airport
294 GBP
Lufthansa
15 Oct
SEA
08:25
Seattle/Tacoma Intl airport
12h 25m
1 Stop
04:50
+1
LHR
London Heathrow airport
23 Oct
LHR
15:05
London Heathrow airport
11h 51m
1 Stop
18:56
SEA
Seattle/Tacoma Intl airport
294 GBP
Lufthansa
21 Oct
SEA
08:25
Seattle/Tacoma Intl airport
12h 25m
1 Stop
04:50
+1
LHR
London Heathrow airport
31 Oct
LHR
15:00
London Heathrow airport
30h 43m
1 Stop
14:43
+1
SEA
Seattle/Tacoma Intl airport
294 GBP
KLM
20 Nov
SEA
09:50
Seattle/Tacoma Intl airport
9h 20m
03:10
+1
LHR
London Heathrow airport
29 Nov
LHR
12:25
London Heathrow airport
9h 50m
14:15
SEA
Seattle/Tacoma Intl airport
361 GBP
Norwegian Air UK
06 Oct
SEA
06:45
Seattle/Tacoma Intl airport
9h 15m
00:00
+1
LGW
London Gatwick airport
11 Oct
LGW
10:50
London Gatwick airport
9h 55m
12:45
SEA
Seattle/Tacoma Intl airport
372 GBP
Norwegian Air UK
16 Oct
SEA
06:45
Seattle/Tacoma Intl airport
9h 15m
00:00
+1
LGW
London Gatwick airport
25 Oct
LGW
10:50
London Gatwick airport
9h 55m
12:45
SEA
Seattle/Tacoma Intl airport
393 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 to London?
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 to London?
Monday
The cheapest day of the week is usually Monday. The most expensive is usually Friday.
When is the cheapest time to fly to London?
in the morning
Seattle to London flights are approximately 10% more expensive in the evening than in the morning
What is the cheapest airline that flies to London?
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 to London?
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 15m | The fastest flight from Seattle to London takes 9h 15m. | |
| 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
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Flights from Seattle to:
Flights to London from:
Flights to other cities in United Kingdom
Lost the lust for United Kingdom? Check out some flights to other cities in London
Flights to other destinations
Lost the lust for London? Check out some flights to other destinations
*Flight prices to London 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.