Cheap flights from Seattle to London

Round-trip
Economy
Seattle (SEA)
London (LON)
Sun 8/9
Sun 8/16
Any month
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Flight information for Seattle to London

Find info about flight duration, direct flights, and airports for your flight from Seattle to London
Best Price Found $428 The best flight deal from Seattle to London found on momondo in the last 72 hours is $428
Fastest flight time 9h 20m The fastest flight from Seattle to London takes 9h 20m.
Direct flights None There are no direct flights from Seattle to London. Popular non-direct routes for this connection are Seattle/Tacoma Intl - London Heathrow, Seattle/Tacoma Intl - London Gatwick and Seattle/Tacoma Intl - London City.
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 Friday
When is the cheapest time to fly to London?
in the morning
Seattle to London flights are approximately 9% more expensive in the evening than in the morning
What is the cheapest airline that flies to London?
easyJet
easyJet, Flybe, and SWISS 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
Cheapest
Best
Quickest
Icelandair
Sep 15
SEA
Seattle/Tacoma Intl
11h 55m
1 stop
LHR
London Heathrow
Sep 29
LHR
London Heathrow
12h 50m
1 stop
SEA
Seattle/Tacoma Intl
Icelandair
Sep 14
SEA
Seattle/Tacoma Intl
20h 30m
1 stop
LHR
London Heathrow
Sep 18
LHR
London Heathrow
13h 00m
1 stop
SEA
Seattle/Tacoma Intl
Icelandair
Sep 16
SEA
Seattle/Tacoma Intl
20h 30m
1 stop
LHR
London Heathrow
Sep 23
LHR
London Heathrow
12h 50m
1 stop
SEA
Seattle/Tacoma Intl

Find the cheapest one-way flights from Seattle to London

If you're looking for one-way flights from Seattle to London, view some of our deals below.
Cheapest
Best
Quickest
Multiple Airlines
Sep 8
SEA
Seattle/Tacoma Intl
55h 20m
3 stops
LHR
London Heathrow
Aer Lingus
Aug 27
SEA
Seattle/Tacoma Intl
14h 05m
1 stop
LHR
London Heathrow
Icelandair
Aug 24
SEA
Seattle/Tacoma Intl
11h 55m
1 stop
LHR
London Heathrow

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 Manchester Flights
Fastest flight time
13h 35m
Cheapest price
$600
Seattle to Birmingham Flights
Fastest flight time
12h 25m
Cheapest price
$684
Spokane to London Flights
Fastest flight time
41h 33m
Cheapest price
$804

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