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Seattle To London 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

July
August
September
October
November
December
January
February
March
April

July is by far the best month, wherein you can get cheapest flights for Seattle to London. Meanwhile, July 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
July

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

round Round Trip Fare
July

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

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 Seattle To London

Scandinavian Airlines
Scandinavian Airlines

Seattle

15:55

Seattle Tacoma International Airport [SEA]

Fri , 03 Jul 2026

16h 05m
ellipse
1 Stop

London

16:00

London Heathrow Airport [LHR]

Sat, 04 Jul 2026

$610
Scandinavian Airlines
Scandinavian Airlines

Seattle

15:55

Seattle Tacoma International Airport [SEA]

Fri , 03 Jul 2026

13h 40m
ellipse
1 Stop

London

13:35

London Heathrow Airport [LHR]

Sat, 04 Jul 2026

$694
WestJet Airlines
WestJet Airlines

Seattle

10:30

Seattle Tacoma International Airport [SEA]

Fri , 03 Jul 2026

17h 35m
ellipse
1 Stop

London

12:05

London Heathrow Airport [LHR]

Sat, 04 Jul 2026

$727
United Airlines
United Airlines

Seattle

15:00

Seattle Tacoma International Airport [SEA]

Fri , 03 Jul 2026

14h 20m
ellipse
1 Stop

London

13:20

London Heathrow Airport [LHR]

Sat, 04 Jul 2026

$801
United Airlines
United Airlines

Seattle

15:40

Seattle Tacoma International Airport [SEA]

Fri , 03 Jul 2026

12h 40m
ellipse
1 Stop

London

12:20

London Heathrow Airport [LHR]

Sat, 04 Jul 2026

$801
Air Canada
Air Canada

Seattle

09:55

Seattle Tacoma International Airport [SEA]

Fri , 03 Jul 2026

17h 55m
ellipse
2 Stop

London

11:50

London Heathrow Airport [LHR]

Sat, 04 Jul 2026

$801
Air Canada
Air Canada

Seattle

15:00

Seattle Tacoma International Airport [SEA]

Fri , 03 Jul 2026

14h 20m
ellipse
1 Stop

London

13:20

London Heathrow Airport [LHR]

Sat, 04 Jul 2026

$801
Air France
Air France

Seattle

21:50

Seattle Tacoma International Airport [SEA]

Fri , 03 Jul 2026

09h 45m
ellipse
Non Stop

London

15:35

London Heathrow Airport [LHR]

Sat, 04 Jul 2026

$833
KLM Royal Dutch Airlines
KLM Royal Dutch Airlines

Seattle

21:50

Seattle Tacoma International Airport [SEA]

Fri , 03 Jul 2026

09h 45m
ellipse
Non Stop

London

15:35

London Heathrow Airport [LHR]

Sat, 04 Jul 2026

$833
Swiss
Swiss

Seattle

10:52

Seattle Tacoma International Airport [SEA]

Fri , 03 Jul 2026

18h 08m
ellipse
2 Stop

London

13:00

London Heathrow Airport [LHR]

Sat, 04 Jul 2026

$839
British Airways
British Airways

Seattle

13:35

Seattle Tacoma International Airport [SEA]

Fri , 03 Jul 2026

09h 15m
ellipse
Non Stop

London

06:50

London Heathrow Airport [LHR]

Sat, 04 Jul 2026

$909
ellipse

Early Morning Flight Seattle to London

wallet
Cheapest Flight
Found
$801
group
Average Flight
Time
17h 55m
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Date/Time
03 Jul 2026
09:55 AM
plane
Airlines
Air Canada
Ellipse

Late Night Flight Seattle to London

wallet
Cheapest Flight
Found
$833
group
Average Flight
Time
09h 45m
calendar
Date/Time
03 Jul 2026
21:50 PM
plane
Airlines
Air France