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
Delta
Delta
09 Sep
SEA
08:20
Seattle/Tacoma Intl airport
9h 25m
01:45
+1
LHR
London Heathrow airport
Delta
17 Sep
LHR
07:30
London Heathrow airport
13h 10m
1 Stop
12:40
SEA
Seattle/Tacoma Intl airport
372 GBP
KLM
KLM
15 Sep
SEA
08:20
Seattle/Tacoma Intl airport
9h 25m
01:45
+1
LHR
London Heathrow airport
KLM
25 Sep
LHR
10:55
London Heathrow airport
13h 55m
1 Stop
16:50
SEA
Seattle/Tacoma Intl airport
372 GBP
British Airways
British Airways
24 Sep
SEA
14:50
Seattle/Tacoma Intl airport
28h 10m
1 Stop
03:00
+2
LGW
London Gatwick airport
British Airways
09 Oct
LGW
17:55
London Gatwick airport
36h 07m
1 Stop
22:02
+1
SEA
Seattle/Tacoma Intl airport
372 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
25 Oct
LGW
10:50
London Gatwick airport
9h 55m
12:45
SEA
Seattle/Tacoma Intl airport
372 GBP
British Airways
British Airways
06 Oct
SEA
06:30
Seattle/Tacoma Intl airport
9h 40m
00:10
+1
LHR
London Heathrow airport
British Airways
16 Oct
LHR
10:35
London Heathrow airport
9h 55m
12:30
SEA
Seattle/Tacoma Intl airport
382 GBP
Delta
Delta
09 Sep
SEA
08:20
Seattle/Tacoma Intl airport
9h 25m
01:45
+1
LHR
London Heathrow airport
Delta
17 Sep
LHR
07:30
London Heathrow airport
13h 10m
1 Stop
12:40
SEA
Seattle/Tacoma Intl airport
372 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
CHEAPEST MONTH TO FLY
April
The cheapest time of year to fly to London from Seattle is April. The most expensive is June.
CHEAPEST DAY TO FLY
Monday
The cheapest day of the week is usually Monday. The most expensive is usually Friday.
CHEAPEST TIME TO FLY
in the afternoon
Seattle to London flights are approximately 6% more expensive in the evening than in the afternoon
CHEAPEST AIRLINE
easyJet
easyJet, SWISS, and Lufthansa are the most popular carriers operating from Seattle to London
CHEAPEST ROUTE
Seattle/Tacoma Intl - London Heathrow
Fly from Seattle/Tacoma Intl to London Heathrow for the best Seattle - London flight prices
CHEAPEST TIME TO BOOK
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)

Flights from Seattle to:

Flights to London from: