Cheap flights from Seattle to London

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Easily compare round trip flights from Seattle to London

Below you can see the best fares for your round trip flight 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
24 Sep
SEA
8:20 am
Seattle/Tacoma Intl airport
9h 25m
1:45 am
+1
LHR
London Heathrow airport
Delta
15 Oct
LHR
10:55 am
London Heathrow airport
13h 55m
1 Stop
4:50 pm
SEA
Seattle/Tacoma Intl airport
457 USD
Norwegian Air UK
Norwegian Air UK
02 Oct
SEA
6:45 am
Seattle/Tacoma Intl airport
9h 15m
12:00 am
+1
LGW
London Gatwick airport
Norwegian Air UK
06 Oct
LGW
11:00 am
London Gatwick airport
9h 55m
12:55 pm
SEA
Seattle/Tacoma Intl airport
460 USD
Icelandair
Icelandair
20 Oct
SEA
8:50 am
Seattle/Tacoma Intl airport
11h 55m
1 Stop
4:45 am
+1
LGW
London Gatwick airport
Icelandair
04 Nov
LGW
8:40 pm
London Gatwick airport
28h 15m
1 Stop
4:55 pm
+1
SEA
Seattle/Tacoma Intl airport
470 USD
Virgin Atlantic
Virgin Atlantic
12 Aug
SEA
8:20 am
Seattle/Tacoma Intl airport
9h 25m
1:45 am
+1
LHR
London Heathrow airport
Virgin Atlantic
19 Aug
LHR
12:30 pm
London Heathrow airport
9h 40m
2:10 pm
SEA
Seattle/Tacoma Intl airport
523 USD
Norwegian Air UK
Norwegian Air UK
02 Oct
SEA
6:45 am
Seattle/Tacoma Intl airport
9h 15m
12:00 am
+1
LGW
London Gatwick airport
Norwegian Air UK
06 Oct
LGW
11:00 am
London Gatwick airport
9h 55m
12:55 pm
SEA
Seattle/Tacoma Intl airport
460 USD
Norwegian
Norwegian
27 Sep
SEA
6:45 am
Seattle/Tacoma Intl airport
9h 15m
12:00 am
+1
LGW
London Gatwick airport
Norwegian
07 Oct
LGW
10:50 am
London Gatwick airport
9h 55m
12:45 pm
SEA
Seattle/Tacoma Intl airport
596 USD

How to get the cheapest flight ticket 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 ticket for your trip
CHEAPEST MONTH TO FLY
April
The cheapest time of year to fly to London from Seattle is April. Most expensive is June
CHEAPEST DAY TO FLY
Monday
The cheapest day of the week is typically Monday. The most expensive is typically Saturday
CHEAPEST TIME TO FLY
in the afternoon
Seattle to London flights are approximately 116% more expensive in the evening than in the afternoon
CHEAPEST AIRLINE
easyJet
easyJet, WOW air, and SWISS are the most popular carriers operating from Seattle to London
CHEAPEST ROUTE
Seattle/Tacoma Intl - London Gatwick
Fly from Seattle/Tacoma Intl to London Gatwick 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 to departure
60
Days before departure
0

Flight information for Seattle to London (03A - LON)

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
Seattle to Birmingham
Fastest flight time
12h 50m
Cheapest price
573 USD
Seattle to Manchester
Fastest flight time
9h 05m
Cheapest price
545 USD
Portland to London
Fastest flight time
12h 15m
Cheapest price
449 USD
Portland to Manchester
Fastest flight time
12h 30m
Cheapest price
654 USD
View more

Flights from Seattle to:

  • London
  • England
  • United Kingdom
  • Europe

Flights to London from:

  • Seattle
  • Washington
  • United States
  • North America
*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.