Flights from Seattle to United Kingdom available from USD 518*

Promo code

Deals on flights in next three months

USD

Seattle (SEA)to

London (LON)
Oct 22 2025 - Oct 31 2025
From
USD 519
Viewed 1 hour ago
Round trip
Economy

Seattle (SEA)to

London (LON)
Oct 22 2025 - Nov 06 2025
From
USD 519
Viewed 1 hour ago
Round trip
Economy

Seattle (SEA)to

London (LON)
Oct 22 2025 - Nov 08 2025
From
USD 519
Viewed 1 hour ago
Round trip
Economy

Seattle (SEA)to

London (LON)
Oct 22 2025 - Nov 11 2025
From
USD 519
Viewed 1 hour ago
Round trip
Economy

Seattle (SEA)to

London (LHR)
Oct 01 2025 - Nov 02 2025
From
USD 523
Viewed 2 days ago
Round trip
Economy

Seattle (SEA)to

London (LHR)
Nov 09 2025 - Nov 15 2025
From
USD 523
Viewed 17 hrs ago
Round trip
Economy

Seattle (SEA)to

London (LHR)
Nov 18 2025 - Nov 22 2025
From
USD 523
Viewed 2 days ago
Round trip
Economy

Seattle (SEA)to

London (LHR)
Nov 14 2025 - Dec 06 2025
From
USD 523
Viewed 2 days ago
Round trip
Economy

Seattle (SEA)to

Glasgow (GLA)
Nov 14 2025 - Nov 18 2025
From
USD 657
Viewed 1 day ago
Round trip
Economy

Seattle (SEA)to

Glasgow (GLA)
Nov 14 2025 - Nov 25 2025
From
USD 657
Viewed 1 day ago
Round trip
Economy

Seattle (SEA)to

Glasgow (GLA)
Nov 14 2025 - Nov 26 2025
From
USD 657
Viewed 1 day ago
Round trip
Economy

Seattle (SEA)to

Glasgow (GLA)
Nov 14 2025 - Dec 06 2025
From
USD 657
Viewed 1 day ago
Round trip
Economy

*Fares displayed have been collected within the last 72hrs and may no longer be available at the time of booking. We display fares for Economy Light as standard but it is possible to change your class of service during the booking process. You can also add baggage, meals and extra legroom to your trip during booking.

Blue image with a map of Iceland and text that reads: Include a little more of Iceland in your journey. Add a Stopover

Plan ahead for your trip from Seattle to United Kingdom with Icelandair

USD
Plan ahead for your trip from Seattle to United Kingdom with Icelandair
From
To
Fare type
Dates
Price
Seattle (SEA)London (LON)Round trip
/
Economy		Jan 08 2026 - Feb 04 2026

From

USD 518

Viewed 1 hour ago

Seattle (SEA)London (LHR)Round trip
/
Economy		Feb 06 2026 - Feb 23 2026

From

USD 522

Viewed 27 minutes ago

Seattle (SEA)Glasgow (GLA)Round trip
/
Economy		Feb 13 2026 - Feb 27 2026

From

USD 657

Viewed 1 day ago

Seattle (SEA)Manchester (MAN)Round trip
/
Economy		Mar 07 2026 - Mar 15 2026

From

USD 566

Viewed 10 hrs ago

Seattle (SEA)Edinburgh (EDI)Round trip
/
Economy		Feb 07 2026 - Feb 19 2026

From

USD 658

Viewed 1 day ago

Seattle (SEA)London (LGW)Round trip
/
Economy		Jan 16 2026 - Jan 29 2026

From

USD 610

Viewed 1 day ago

*Fares displayed have been collected within the last 72hrs and may no longer be available at the time of booking. We display fares for Economy Light as standard but it is possible to change your class of service during the booking process. You can also add baggage, meals and extra legroom to your trip during booking.