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Cheap Flights from Seattle to London

  • Seattle London

    Tue, May 26 - Mon, Jun 1

    From US$320.65
  • Seattle London

    Tue, May 26 - Mon, Jun 1

    From US$323.60
  • Seattle London

    Tue, May 26 - Mon, Jun 1

    From US$346.97
  • Seattle London

    Wed, Apr 22 - Wed, Apr 29

    From US$370.48
  • Seattle London

    Wed, Apr 22 - Tue, Apr 28

    From US$388.35
  • Seattle London

    Sat, Apr 25 - Thu, May 21

    From US$414.53

Prices shown are for 1 adult ticket including taxes & fees.(As ticket fares can change frequently, these advertised prices are for reference only. The actual prices will be shown at time of booking.)

Seattle to London Flight Information

Below are some common questions asked about this flight route:

When can I book the cheapest flight from Seattle to London?

Airlines adjust prices for plane tickets based on the day and time that you book your flight. After analyzing data from all airlines, we have discovered that the best days to book flights from Seattle to London are Tuesdays, Wednesdays, and Saturdays.

What are the airlines flying from Seattle to London?

What is the most popular airline for non-stop flights from Seattle to London?

British Airways provides 63 of the non-stop flights between Seattle and London.

Average duration of direct flights: 9h22m
Airports at destination:
Flight route:
Price starting from:

Seattle to London Flight Schedule

Flight info. Departure
Arrival
Route Weekly Schedule
15:15 SEA 08:40 LHR
Seattle to London -MT---- Search
19:20 SEA 12:40 LHR
Seattle to London SMTWTFS Search
13:45 SEA 07:00 LGW
Seattle to London --T-T-S Search
19:20 SEA 12:40 LHR
Seattle to London SMTWTFS Search
13:50 SEA 07:10 LHR
Seattle to London SMTWTFS Search
13:50 SEA 07:10 LHR
Seattle to London -----F- Search
9W5827
17:55 SEA 11:15 LHR
Seattle to London SMTWTFS Search
AY5450
13:50 SEA 07:10 LHR
Seattle to London SMTWTFS Search
15:15 SEA 08:40 LHR
Seattle to London -MT---- Search
EI8748
19:20 SEA 12:40 LHR
Seattle to London SMTWTFS Search
AY5448
18:25 SEA 11:50 LHR
Seattle to London SMTWTFS Search
EI8752
13:30 SEA 07:10 LHR
Seattle to London -----F- Search
17:15 SEA 11:10 LHR
Seattle to London -M----- Search
IB7314
13:50 SEA 07:10 LHR
Seattle to London ------S Search
IB7312
19:20 SEA 12:40 LHR
Seattle to London SMTWTFS Search
AF9905
15:15 SEA 08:40 LHR
Seattle to London -MT---- Search
15:15 SEA 08:40 LHR
Seattle to London SMTWTF- Search
AM7671
15:20 SEA 08:45 LHR
Seattle to London -MT---- Search
15:20 SEA 08:45 LHR
Seattle to London SMT---- Search
19:55 SEA 13:20 LHR
Seattle to London -MT---- Search

Seattle to London Heathrow Airport (LHR)

13:50, Apr 24 - 09:50, Apr 29
AA | American Airlines
9h 20m
SEA - LHR
Nonstop
US$426
Round-trip from
Search
15:15, May 17 - 11:15, May 24
VS | Virgin Atlantic
9h 25m
SEA - LHR
Nonstop
US$426
Round-trip from
Search
23:15, May 17 - 13:35, May 24
BA | British Airways
9h 20m
SEA - LHR
Nonstop
US$430
Round-trip from
Search
13:50, May 24 - 15:25, May 31
AY | Finnair
9h 20m
SEA - LHR
Nonstop
US$431
Round-trip from
Search
15:15, May 24 - 11:15, May 31
DL | Delta Air Lines
9h 25m
SEA - LHR
Nonstop
US$432
Round-trip from
Search

Seattle to Gatwick Airport (LGW)

13:45, May 3 - 09:50, May 8
DI | Norwegian Air UK ltd
9h 15m
SEA - LGW
Nonstop
US$438
Round-trip from
Search
13:45, Apr 29 - 09:50, May 1
DI | Norwegian Air UK ltd
9h 15m
SEA - LGW
Nonstop
US$446
Round-trip from
Search
13:45, Apr 24 - 09:50, Apr 29
DI | Norwegian Air UK ltd
9h 15m
SEA - LGW
Nonstop
US$451
Round-trip from
Search
13:45, May 6 - 09:50, May 8
DI | Norwegian Air UK ltd
9h 15m
SEA - LGW
Nonstop
US$466
Round-trip from
Search
13:45, Apr 8 - 09:50, Apr 10
DI | Norwegian Air UK ltd
9h 15m
SEA - LGW
Nonstop
US$478
Round-trip from
Search

Seattle to London City Airport (LCY)

19:15, Jun 6 - 09:25, Jun 12
EI | Aer Lingus
14h 0m
SEA - LCY
2 stop
US$629
Round-trip from
Search
08:00, Apr 4 - 11:15, Apr 10
AS | Alaska Airlines
21h 15m
SEA - LCY
2 stop
US$890
Round-trip from
Search
19:15, May 12 - 10:55, May 18
EI | Aer Lingus
14h 15m
SEA - LCY
2 stop
US$632
Round-trip from
Search
19:15, May 6 - 10:55, May 11
EI | Aer Lingus
14h 15m
SEA - LCY
2 stop
US$636
Round-trip from
Search
19:15, Apr 21 - 21:35, Apr 26
EI | Aer Lingus
14h 15m
SEA - LCY
2 stop
US$638
Round-trip from
Search

Seattle to London Luton Airport (LTN)

11:30, Apr 17 - 11:15, Apr 22
DL | Delta Air Lines
27h 45m
SEA - LTN
2 stop
US$677
Round-trip from
Search
11:30, Apr 19 - 11:15, Apr 24
DL | Delta Air Lines
30h 20m
SEA - LTN
2 stop
US$743
Round-trip from
Search
11:26, Apr 4 - 11:15, Apr 10
DL | Delta Air Lines
30h 24m
SEA - LTN
2 stop
US$857
Round-trip from
Search

Seattle to Stansted Airport (STN)

19:15, May 11 - 06:30, May 16
EI | Aer Lingus
13h 35m
SEA - STN
2 stop
US$1,064
Round-trip from
Search
19:15, Apr 20 - 12:20, Apr 24
EI | Aer Lingus
13h 35m
SEA - STN
2 stop
US$1,077
Round-trip from
Search
19:15, May 20 - 10:05, May 25
EI | Aer Lingus
13h 35m
SEA - STN
2 stop
US$1,134
Round-trip from
Search
19:15, May 18 - 12:00, May 23
EI | Aer Lingus
13h 35m
SEA - STN
2 stop
US$1,141
Round-trip from
Search

Seattle to Southend Airport (SEN)

08:00, May 11 - 15:25, May 17
AY | Finnair
23h 55m
SEA - SEN
2 stop
US$600
Round-trip from
Search
11:35, Apr 10 - 11:15, Apr 15
DL | Delta Air Lines
20h 50m
SEA - SEN
2 stop
US$669
Round-trip from
Search
19:15, May 2 - 21:35, May 7
EI | Aer Lingus
19h 50m
SEA - SEN
2 stop
US$879
Round-trip from
Search
19:15, May 16 - 09:50, May 20
EI | Aer Lingus
19h 50m
SEA - SEN
2 stop
US$895
Round-trip from
Search

Prices shown are for 1 adult ticket including taxes & fees.(As ticket fares can change frequently, these advertised prices are for reference only. The actual prices will be shown at time of booking.)

Roundtrip vs One-Way Flights from Seattle to London

There is usually no major price difference between buying a roundtrip flight versus a one-way flight. Increased flexibility is the main benefit when it comes to buying a one-way flight from Seattle to London. However, booking a roundtrip flight is a simpler process. You can compare roundtrip and one-way flights by using our flight comparison tool.

Nonstop vs Connecting Flights from Seattle to London

The average price for connecting flights from Seattle to London is USD 643.66.The average price for nonstop flights from Seattle to London is USD 829.65.

Travel from Seattle to London

London attracts thousands of visitors every year for both business and pleasure. Planning a trip from Seattle to London is easy when you use Trip.com to help you make travel arrangements. With Trip.com, you can search for available flights and hotel rooms, and then make your booking quickly and easily online.

A Trip to Remember

Make your journey from Seattle to London a trip to remember when you use Trip.com to review city attractions before you arrive. With a preview of what's available at your destination, you can make any necessary reservations in advance for the best travel experience possible.