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Cheap Flights from Seattle to London

  • Seattle London

    Wed, 4 Mar - Wed, 11 Mar

    From £270.23
  • Seattle London

    Wed, 4 Mar - Wed, 11 Mar

    From £270.56
  • Seattle London

    Wed, 4 Mar - Wed, 11 Mar

    From £271.22
  • Seattle London

    Wed, 4 Mar - Wed, 11 Mar

    From £271.44
  • Seattle London

    Wed, 4 Mar - Wed, 11 Mar

    From £273.99
  • Seattle London

    Wed, 4 Mar - Wed, 11 Mar

    From £282.50

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:

Best time to book Seattle to London flights

Generally the best time to book Seattle to London flights is two months in advance. And the cheapest days to fly are Tuesdays, Wednesdays, and Saturdays. Sunday is the most expensive.

How many direct flights from Seattle to London?

There are 19 direct flights 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.

Airlines flying this route:
Airports in Seattle:
Airports in London:
Average duration of direct flights: 9h22m

Seattle to London Flight Schedule

Flight info. Departure
Arrival
Weekly Schedule
15:15 SEA 08:40 LHR
SM-WTFS Search
19:20 SEA 12:40 LHR
SMTWTFS Search
DI7132
13:45 SEA 07:00 LGW
S-T-T-S Search
19:20 SEA 12:40 LHR
SMTWTFS Search
13:50 SEA 07:10 LHR
---WTF- Search
13:50 SEA 07:10 LHR
---WTF- Search
9W5827
17:55 SEA 11:15 LHR
SMTWTFS Search
AY5450
13:50 SEA 07:10 LHR
---WTF- Search
15:15 SEA 08:40 LHR
SM-WTFS Search
EI8748
19:20 SEA 12:40 LHR
SMTW-F- Search
IB4654
13:25 SEA 06:55 LHR
SM--TFS Search
AY5448
18:25 SEA 11:50 LHR
SMTWTFS Search
IB4602
19:20 SEA 12:40 LHR
SMTWTFS Search
EI8752
13:30 SEA 07:10 LHR
----TF- Search
AF3563
17:15 SEA 11:10 LHR
-M----- Search
17:15 SEA 11:10 LHR
-M----- Search
17:15 SEA 11:10 LHR
-M----- Search
17:15 SEA 11:10 LHR
-M----- Search
IB7314
13:50 SEA 07:10 LHR
---WTF- Search
IB7312
19:20 SEA 12:40 LHR
SMTWTFS Search

Flights to London City Airport (LCY) from Seattle

15 Mar, 14:26 - 19 Mar, 12:25
DL | Delta Air Lines
12h 4m
SEA - LCY
1 stop
£815
Round-trip from
Search
6 Apr, 19:15 - 13 Apr, 21:10
EI | Aer Lingus
14h 15m
SEA - LCY
2 stop
£515
Round-trip from
Search
2 Mar, 18:45 - 9 Mar, 08:30
DE | Condor
13h 55m
SEA - LCY
2 stop
£763
Round-trip from
Search
9 Mar, 14:26 - 11 Mar, 09:25
KL | Klm Royal Dutch Airlines
12h 4m
SEA - LCY
2 stop
£1,635
Round-trip from
Search
23 Apr, 19:15 - 27 Apr, 08:40
EI | Aer Lingus
13h 45m
SEA - LCY
2 stop
£739
Round-trip from
Search

Flights to Gatwick Airport (LGW) from Seattle

1 Apr, 13:45 - 8 Apr, 09:50
DI | Norwegian Air
9h 15m
SEA - LGW
Nonstop
£492
Round-trip from
Search
3 Apr, 13:45 - 10 Apr, 09:50
DI | Norwegian Air
9h 15m
SEA - LGW
Nonstop
£643
Round-trip from
Search
9 Apr, 19:20 - 14 Apr, 13:25
AF | Air France
17h 25m
SEA - LGW
1 stop
£1,056
Round-trip from
Search
21 Mar, 17:15 - 27 Mar, 12:25
AF | Air France
16h 55m
SEA - LGW
1 stop
£1,466
Round-trip from
Search
2 Feb, 14:30 - 7 Feb, 12:00
FI | Icelandair
12h 20m
SEA - LGW
2 stop
£293
Round-trip from
Search

Flights to Heathrow Airport (LHR) from Seattle

4 Mar, 18:25 - 11 Mar, 14:30
AY | Finnair
9h 25m
SEA - LHR
Nonstop
£271
Round-trip from
Search
4 Mar, 17:50 - 11 Mar, 12:25
VS | Virgin Atlantic
9h 20m
SEA - LHR
Nonstop
£271
Round-trip from
Search
4 Mar, 17:50 - 11 Mar, 12:25
DL | Delta Air Lines
9h 20m
SEA - LHR
Nonstop
£271
Round-trip from
Search
4 Mar, 18:25 - 11 Mar, 14:30
BA | British Airways
9h 25m
SEA - LHR
Nonstop
£282
Round-trip from
Search
4 Mar, 17:50 - 11 Mar, 12:25
AF | Air France
9h 20m
SEA - LHR
Nonstop
£302
Round-trip from
Search

Flights to Southend Airport (SEN) from Seattle

23 Apr, 19:20 - 27 Apr, 11:15
AF | Air France
13h 10m
SEA - SEN
1 stop
£1,045
Round-trip from
Search
10 Mar, 21:10 - 17 Mar, 08:50
EI | Aer Lingus
18h 45m
SEA - SEN
2 stop
£611
Round-trip from
Search
12 Mar, 13:48 - 14 Mar, 08:10
DL | Delta Air Lines
24h 47m
SEA - SEN
2 stop
£1,286
Round-trip from
Search
4 Feb, 20:10 - 6 Feb, 08:25
EI | Aer Lingus
18h 45m
SEA - SEN
2 stop
£840
Round-trip from
Search
30 Jan, 20:10 - 5 Feb, 17:30
EI | Aer Lingus
18h 45m
SEA - SEN
2 stop
£904
Round-trip from
Search

Flights to Stansted Airport (STN) from Seattle

3 Feb, 18:05 - 5 Feb, 08:00
DE | Condor
16h 30m
SEA - STN
2 stop
£612
Round-trip from
Search
21 Mar, 21:10 - 27 Mar, 21:25
EI | Aer Lingus
18h 35m
SEA - STN
2 stop
£1,077
Round-trip from
Search
31 Jan, 14:10 - 2 Feb, 07:30
LH | Lufthansa
20h 25m
SEA - STN
2 stop
£1,574
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.

Direct vs Connecting Flights from Seattle to London

The average price for connecting flights from Seattle to London is GBP 498.05. The average price for nonstop flights from Seattle to London is GBP 641.97.

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.

Trip.com is part of Trip.com Group Limited, one of the world's leading providers of travel services.
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