$172 Cheap flight deals from Seattle (SEA) to London (YXU)

This Weekend's Flight Deals from Seattle to London

This weekend's flight prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Oct 2 - Sun, Oct 4
SEA
Seattle - Tacoma Intl.
YHM
John C. Munro Hamilton Intl.
$1,040 Roundtrip, found 5 days ago
$1,040
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Fri, Oct 2 from Seattle - Tacoma Intl. to John C. Munro Hamilton Intl., returning Sun, Oct 4, priced at $1,040 found 5 days ago
Fri, Oct 2 - Mon, Oct 5
SEA
Seattle - Tacoma Intl.
YKF
Region of Waterloo Intl.
$1,251 Roundtrip, found 2 days ago
$1,251
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Fri, Oct 2 from Seattle - Tacoma Intl. to Region of Waterloo Intl., returning Mon, Oct 5, priced at $1,251 found 2 days ago

Airfares from $172 One Way, $580 Round Trip from Seattle to London

Prices starting at $580 for return flights and $172 for one-way flights to London were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Oct 17 - Wed, Oct 21
SEA
Seattle
YHM
Hamilton
$580 Roundtrip, found 1 day ago
$580
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Oct 17 from Seattle to Hamilton, returning Wed, Oct 21, priced at $580 found 1 day ago
Tue, Oct 20 - Sat, Oct 24
SEA
Seattle
YHM
Hamilton
$599 Roundtrip, found 1 day ago
$599
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Tue, Oct 20 from Seattle to Hamilton, returning Sat, Oct 24, priced at $599 found 1 day ago
Mon, Nov 16 - Tue, Nov 24
SEA
Seattle
YHM
Hamilton
$600 Roundtrip, found 3 days ago
$600
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Mon, Nov 16 from Seattle to Hamilton, returning Tue, Nov 24, priced at $600 found 3 days ago
Sat, Oct 17 - Wed, Oct 21
SEA
Seattle
YHM
Hamilton
$610 Roundtrip, found 1 day ago
$610
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Oct 17 from Seattle to Hamilton, returning Wed, Oct 21, priced at $610 found 1 day ago
Wed, Dec 2 - Sun, Dec 6
SEA
Seattle
YHM
Hamilton
$618 Roundtrip, found 3 days ago
$618
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Wed, Dec 2 from Seattle to Hamilton, returning Sun, Dec 6, priced at $618 found 3 days ago

More About Flying To London from Seattle

Frequently asked questions

What is the shortest flight from Seattle to London?
The fastest flight time from Sea-Tac Airport to London, ON (YXU-London Intl.) is 5 hours and 10 minutes, which gives you lots of time to indulge in a drink or get engrossed in a book.
What is the cheapest day of the week to fly?
Consider flying out early in the week to save on your airfare. Orbitz data from 2021 shows that Monday is the cheapest day to depart, followed by Tuesday. Saturday showed the highest average ticket prices likely because many travelers prefer to start their vacation on a weekend.
What is the cheapest month to fly?
We won't keep you guessing, according to Orbitz data from 2021, the cheapest month to fly is February. Perfect for those who need a weekend getaway, or just a break from it all in the shortest month of the year. Be aware that the most expensive time to fly is during the height of summer in July, and in the holiday month of December.*According to flight demand on Orbitz.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

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