Cheap flights from Seattle to London

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

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)

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
What is the cheapest month to fly to London?
October
The cheapest time of year to fly to London from Seattle is October. Most expensive is June
What is the cheapest day to fly to London?
Tuesday
The cheapest day of the week is typically Tuesday. The most expensive is typically Saturday
When is the cheapest time to fly to London?
in the morning
Seattle to London flights are approximately 8% more expensive in the evening than in the morning
What is the cheapest airline that flies to London?
Alaska Airlines
Alaska Airlines, easyJet, and JetBlue 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 to departure
60
Days before departure
0

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
Icelandair
Icelandair
10 Feb
6:30 am
SEA
Seattle/Tacoma Intl airport
12h 20m
1 Stop
LHR
2:50 am
+1
London Heathrow airport
Icelandair
03 Mar
8:35 pm
LHR
London Heathrow airport
28h 25m
1 Stop
SEA
5:00 pm
+1
Seattle/Tacoma Intl airport
$379
Icelandair
Icelandair
01 Mar
6:30 am
SEA
Seattle/Tacoma Intl airport
12h 20m
1 Stop
LHR
2:50 am
+1
London Heathrow airport
Icelandair
11 Mar
12:15 pm
LHR
London Heathrow airport
12h 45m
1 Stop
SEA
6:00 pm
Seattle/Tacoma Intl airport
$395
British Airways
British Airways
18 Feb
4:00 am
SEA
Seattle/Tacoma Intl airport
15h 35m
1 Stop
LHR
3:35 am
+1
London Heathrow airport
British Airways
25 Feb
2:35 pm
LHR
London Heathrow airport
9h 55m
SEA
4:30 pm
Seattle/Tacoma Intl airport
$413
Iberia
Iberia
20 Apr
12:20 pm
SEA
Seattle/Tacoma Intl airport
9h 20m
LHR
5:40 am
+1
London Heathrow airport
Iberia
05 May
10:50 am
LHR
London Heathrow airport
9h 45m
SEA
12:35 pm
Seattle/Tacoma Intl airport
$501
Virgin Atlantic
Virgin Atlantic
11 Mar
11:50 am
SEA
Seattle/Tacoma Intl airport
9h 20m
LHR
4:10 am
+1
London Heathrow airport
Virgin Atlantic
18 Mar
12:25 pm
LHR
London Heathrow airport
9h 50m
SEA
3:15 pm
Seattle/Tacoma Intl airport
$456
Norwegian Air UK
Norwegian Air UK
06 May
6:45 am
SEA
Seattle/Tacoma Intl airport
9h 15m
LGW
12:00 am
+1
London Gatwick airport
Norwegian Air UK
27 May
10:50 am
LGW
London Gatwick airport
9h 55m
SEA
12:45 pm
Seattle/Tacoma Intl airport
$475

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
9h 25m
Cheapest price
$494
Seattle to Birmingham
Fastest flight time
14h 40m
Cheapest price
$604

Flights from Seattle to:

*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.