Flight information for London to Seattle
(LON to SEA)
Find info about flight duration, direct flights, and airports for your flight from London to Seattle
| Best price found | £260 | The best flight deal from London to Seattle found on momondo in the last 72 hours is £260 |
| Fastest flight time | 9h 45m | The fastest flight from London to Seattle takes 9h 45m |
| Direct flights | None | There are no direct flights from London to Seattle. Popular non-direct routes for this connection are London Gatwick Airport - Seattle/Tacoma Intl Airport, London Heathrow Airport - Seattle/Tacoma Intl Airport and London City Airport - Seattle/Tacoma Intl Airport. |
| Airports in Seattle | 3 airports | There are 3 airports near Seattle: Seattle King County/Boeing (BFI), Seattle Lake Union Spb (LKE), Seattle/Tacoma Intl (SEA) |
How to get the cheapest flight ticket from London to Seattle
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 from London to Seattle?
February
The cheapest time of year to fly to Seattle from London is February. The most expensive is July.
What is the cheapest day to depart London for Seattle?
Tuesday
The cheapest day of the week is usually Tuesday. The most expensive is usually Sunday.
When is the cheapest time to fly from London to Seattle?
in the evening
London to Seattle flights are approximately 15% more expensive in the afternoon than in the evening
What is the cheapest airline that flies to Seattle from London?
Austrian Airlines
Air Canada, American Airlines, and Austrian Airlines are the most popular carriers operating from London to Seattle
What is the cheapest London to Seattle flight route?
London Heathrow - Seattle/Tacoma Intl
Fly from London Heathrow to Seattle/Tacoma Intl for the best London - Seattle flight prices
How far in advance should you book London to Seattle flights?
51 days before
The cheapest time to buy a flight from London to Seattle is approximately 51 days to departure
Easily compare return flights from London to Seattle
Below you can see the best fares for your return flight route over the next three months. All fares were found on momondo this week. Browse the quickest and cheapest flights from London to Seattle by changing tabs
KLM![KLM]()
31 Jan![KLM]()
14 Feb
LHR01:30London Heathrow
12h 35m
1 stop
SEA14:05Seattle/Tacoma Intl
SEA10:40Seattle/Tacoma Intl
9h 20m
LHR20:00London Heathrow
KLM![KLM]()
31 Jan![KLM]()
9 Feb
LHR01:30London Heathrow
12h 35m
1 stop
SEA14:05Seattle/Tacoma Intl
SEA10:40Seattle/Tacoma Intl
9h 20m
LHR20:00London Heathrow
Icelandair![Icelandair]()
2 Feb![Icelandair]()
7 Feb
LHR07:05London Heathrow
12h 50m
1 stop
SEA19:55Seattle/Tacoma Intl
SEA09:50Seattle/Tacoma Intl
11h 55m
1 stop
LHR21:45London Heathrow
Icelandair![Icelandair]()
1 Dec![Icelandair]()
6 Dec
LHR07:05London Heathrow
12h 50m
1 stop
SEA19:55Seattle/Tacoma Intl
SEA09:50Seattle/Tacoma Intl
11h 55m
1 stop
LHR21:45London Heathrow
Lufthansa![Lufthansa]()
31 Jan![Lufthansa]()
7 Feb
LHR01:30London Heathrow
13h 50m
1 stop
SEA15:20Seattle/Tacoma Intl
SEA10:15Seattle/Tacoma Intl
12h 05m
1 stop
LHR22:20London Heathrow
Find the cheapest one-way flights from London to Seattle
If you're looking for one-way flights from London to Seattle, view some of our deals below provided by Lufthansa, SWISS and WestJet
Search last-minute flights to Seattle from London
Find and compare flight prices for your last-minute flight from London to Seattle
Lufthansa![Lufthansa]()
21 Sep![Lufthansa]()
20 Oct
LHR02:30London Heathrow
14h 00m
1 stop
SEA16:30Seattle/Tacoma Intl
SEA11:45Seattle/Tacoma Intl
11h 20m
1 stop
LHR23:05London Heathrow
Icelandair![Icelandair]()
23 Sep![Icelandair]()
12 Oct
LHR09:10London Heathrow
13h 30m
1 stop
SEA22:40Seattle/Tacoma Intl
SEA11:50Seattle/Tacoma Intl
12h 05m
1 stop
LHR23:55London Heathrow
Lufthansa![Lufthansa]()
20 Sep![Lufthansa]()
18 Oct
LCY03:50London City
12h 40m
1 stop
SEA16:30Seattle/Tacoma Intl
SEA10:20Seattle/Tacoma Intl
20h 25m
1 stop
LCY06:45London City
Lufthansa![Lufthansa]()
20 Sep![Lufthansa]()
18 Oct
LCY03:50London City
12h 40m
1 stop
SEA16:30Seattle/Tacoma Intl
SEA08:25Seattle/Tacoma Intl
22h 20m
2 stops
LCY06:45London City
Brussels Airlines![Brussels Airlines]()
21 Sep![Brussels Airlines]()
18 Oct
LHR02:45London Heathrow
22h 15m
2 stops
SEA01:00Seattle/Tacoma Intl
SEA06:51Seattle/Tacoma Intl
12h 49m
1 stop
LHR19:40London Heathrow
Best airlines flying from London to Seattle
Compare and see reviews for airlines that fly from London to Seattle with momondo
AirlineFree cancellationPrice
PriceFrom £225
Free cancellation
PriceFrom £242
Free cancellation
PriceFrom £259
Free cancellation
PriceFrom £271
Free cancellation
PriceFrom £279
Free cancellation
PriceFrom £281
Free cancellation
PriceFrom £291
Free cancellation
PriceFrom £293
Free cancellation
PriceFrom £295
Free cancellation
PriceFrom £296
Free cancellation
Are airlines flying from London to Seattle/Tacoma Intl offering flexible cancellation due to COVID-19?
To ease the stress of booking flights, some of our airline partners flying from London to Seattle/Tacoma Intl are responding to the global pandemic. The following airlines may have a flexible cancellation policy to help accommodate travellers: British Airways, Virgin Atlantic, and United Airlines.
How far is London to Seattle/Tacoma Intl by plane?
A flight from London to Seattle/Tacoma Intl will travel around 4781.3 mi. By plane, this route typically takes 12h 35m.
Can I fly to Seattle/Tacoma Intl from London right now?
Information is based on travel restrictions from London to Seattle/Tacoma Intl
Most visitors from London will not be allowed to enter Seattle/Tacoma Intl.
COVID-19 testing requirements
Visitors from London must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Seattle/Tacoma Intl.
Quarantine requirements
Visitors from London are not required to quarantine after entering Seattle/Tacoma Intl.
Most visitors from London will not be allowed to enter Seattle/Tacoma Intl.
COVID-19 testing requirements
Visitors from London must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Seattle/Tacoma Intl.
Quarantine requirements
Visitors from London are not required to quarantine after entering Seattle/Tacoma Intl.
Can I fly back to London from Seattle/Tacoma Intl?
Returning to London from Seattle/Tacoma Intl
COVID-19 testing requirements
Visitors from Seattle/Tacoma Intl must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to London.
Quarantine requirements
Visitors from Seattle/Tacoma Intl are not required to quarantine after entering London.
COVID-19 testing requirements
Visitors from Seattle/Tacoma Intl must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to London.
Quarantine requirements
Visitors from Seattle/Tacoma Intl are not required to quarantine after entering London.