Cheap flights from Seattle to London

Depart
Return
Any month
Compare vs momondo |

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
Icelandair
Icelandair
13 Jan
06:30
SEA
Seattle/Tacoma Intl airport
12h 20m
1 Stop
LHR
02:50
+1
London Heathrow airport
Icelandair
23 Jan
20:35
LHR
London Heathrow airport
28h 25m
1 Stop
SEA
17:00
+1
Seattle/Tacoma Intl airport
296 GBP
Icelandair
Icelandair
14 Jan
06:30
SEA
Seattle/Tacoma Intl airport
12h 20m
1 Stop
LGW
02:50
+1
London Gatwick airport
Icelandair
24 Jan
12:00
LGW
London Gatwick airport
13h 00m
1 Stop
SEA
17:00
Seattle/Tacoma Intl airport
301 GBP
Delta
Delta
15 Jan
09:50
SEA
Seattle/Tacoma Intl airport
9h 20m
LHR
03:10
+1
London Heathrow airport
Delta
22 Jan
06:30
LHR
London Heathrow airport
12h 54m
1 Stop
SEA
11:24
Seattle/Tacoma Intl airport
309 GBP
Virgin Atlantic
Virgin Atlantic
03 Mar
09:50
SEA
Seattle/Tacoma Intl airport
9h 20m
LHR
03:10
+1
London Heathrow airport
Virgin Atlantic
13 Mar
12:25
LHR
London Heathrow airport
9h 50m
SEA
15:15
Seattle/Tacoma Intl airport
316 GBP
Norwegian Air UK
Norwegian Air UK
03 May
06:45
SEA
Seattle/Tacoma Intl airport
9h 15m
LGW
00:00
+1
London Gatwick airport
Norwegian Air UK
13 May
10:50
LGW
London Gatwick airport
9h 55m
SEA
12:45
Seattle/Tacoma Intl airport
323 GBP
Delta
Delta
15 Jan
09:50
SEA
Seattle/Tacoma Intl airport
9h 20m
LHR
03:10
+1
London Heathrow airport
Delta
22 Jan
06:30
LHR
London Heathrow airport
12h 54m
1 Stop
SEA
11:24
Seattle/Tacoma Intl airport
309 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?
October
The cheapest time of year to fly to London from Seattle is October. The most expensive is June.
What is the cheapest day to fly to London?
Wednesday
The cheapest day of the week is usually Wednesday. The most expensive is usually Friday.
When is the cheapest time to fly to London?
in the morning
Seattle to London flights are approximately 15% 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 20m The fastest flight from Seattle to London takes 9h 20m.
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
Portland to London
Fastest flight time
14h 00m
Cheapest price
386 GBP
Seattle to Birmingham
Fastest flight time
16h 04m
Cheapest price
439 GBP

Flights from Seattle to:

Flights to London from: