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London To Seattle Flights

  • One-Way
  • Round-Trip
  • Multi-City

From

Indira Gandhi International Airport

To

Chhatrapati Shivaji International Airport

DEPARTURE DATE

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Friday

Return Date

Book a round trip
to save more

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TRAVELLER & CLASS

1 Traveller

Economy

January
February
March
April
August
September
October
November
December

January is by far the best month, wherein you can get cheapest flights for London to Seattle. Meanwhile, January is perceived as the expensive month due to the varying factors. That’s why it’s highly advised to make advanced online flight booking to save huge amounts of money.

Things to know
arrow One Way Fare
January

January- During this month the footfall is less so, the flight is gradually inexpensive.

round Round Trip Fare
January

January - is the cheapest month to book round trip flights.

Cheaper Fare
$ 1299

Cheapest Fare- Currently, this is the fare price based on the current demand.

disclDisclaimer - All the mentioned fares were found within last 48 hrs. The displayed fares are based on historical data and are subject to change. The fares cannot be guaranteed at the time of booking.

Best Flight From London To Seattle

United Airlines
United Airlines

London

16:40

London Heathrow Airport [LHR]

Sat , 31 Jan 2026

28h 40m
ellipse
1 Stop

Seattle

13:20

Seattle Tacoma International Airport [SEA]

Sun, 01 Feb 2026

$542
WestJet Airlines
WestJet Airlines

London

14:50

London Heathrow Airport [LHR]

Sat , 31 Jan 2026

31h 29m
ellipse
1 Stop

Seattle

14:19

Seattle Tacoma International Airport [SEA]

Sun, 01 Feb 2026

$553
Air Canada
Air Canada

London

14:30

London Heathrow Airport [LHR]

Sat , 31 Jan 2026

12h 46m
ellipse
1 Stop

Seattle

19:16

Seattle Tacoma International Airport [SEA]

Sat, 31 Jan 2026

$564
United Airlines
United Airlines

London

14:30

London Heathrow Airport [LHR]

Sat , 31 Jan 2026

12h 46m
ellipse
1 Stop

Seattle

19:16

Seattle Tacoma International Airport [SEA]

Sat, 31 Jan 2026

$564
Lufthansa
Lufthansa

London

17:50

London Heathrow Airport [LHR]

Sat , 31 Jan 2026

27h 30m
ellipse
1 Stop

Seattle

13:20

Seattle Tacoma International Airport [SEA]

Sun, 01 Feb 2026

$569
Lufthansa
Lufthansa

London

14:30

London Heathrow Airport [LHR]

Sat , 31 Jan 2026

12h 46m
ellipse
1 Stop

Seattle

19:16

Seattle Tacoma International Airport [SEA]

Sat, 31 Jan 2026

$591
Austrian Airlines
Austrian Airlines

London

12:05

London Heathrow Airport [LHR]

Sat , 31 Jan 2026

16h 52m
ellipse
1 Stop

Seattle

20:57

Seattle Tacoma International Airport [SEA]

Sat, 31 Jan 2026

$604
Icelandair
Icelandair

London

12:15

London Heathrow Airport [LHR]

Sat , 31 Jan 2026

12h 45m
ellipse
1 Stop

Seattle

17:00

Seattle Tacoma International Airport [SEA]

Sat, 31 Jan 2026

$689
Air Canada
Air Canada

London

14:30

London Heathrow Airport [LHR]

Mon , 02 Feb 2026

12h 46m
ellipse
1 Stop

Seattle

19:16

Seattle Tacoma International Airport [SEA]

Mon, 02 Feb 2026

$773
Turkish Airlines
Turkish Airlines

London

06:35

London Heathrow Airport [LHR]

Sat , 31 Jan 2026

18h 30m
ellipse
1 Stop

Seattle

17:05

Seattle Tacoma International Airport [SEA]

Sat, 31 Jan 2026

$1027
American Airlines
American Airlines

London

14:10

London Heathrow Airport [LHR]

Mon , 02 Feb 2026

16h 10m
ellipse
1 Stop

Seattle

22:20

Seattle Tacoma International Airport [SEA]

Mon, 02 Feb 2026

$1198
ellipse

Find the Lowest Airfare London to Seattle

Cheapest Fares
Fare
Date
Airline
Departure
Lowest Airfare
$1299
02 January 2026
Air Canada
15:00 PM
Cheapest Airfare Within 30 Days
$1299
02 January 2026
Air Canada
15:00 PM
Cheapest Airfare Within 90 Days
$1299
02 January 2026
Air Canada
15:00 PM
ellipse

Early Morning Flight London to Seattle

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Cheapest Flight
Found
$1027
group
Average Flight
Time
18h 30m
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Date/Time
31 Jan 2026
06:35 AM
plane
Airlines
Turkish Airlines
Ellipse

Late Night Flight London to Seattle

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Cheapest Flight
Found
$542
group
Average Flight
Time
28h 40m
calendar
Date/Time
31 Jan 2026
16:40 PM
plane
Airlines
United Airlines