Flights from Seattle to United Kingdom available from USD 475*

Promo code

Deals on flights in next three months

USD

Seattle (SEA)to

London (LON)
Oct 08 2025 - Nov 04 2025
From
USD 518
Viewed 7 hrs ago
Round trip
Economy

Seattle (SEA)to

London (LON)
Oct 09 2025 - Oct 12 2025
From
USD 518
Viewed 7 hrs ago
Round trip
Economy

Seattle (SEA)to

London (LON)
Oct 07 2025 - Oct 30 2025
From
USD 518
Viewed 7 hrs ago
Round trip
Economy

Seattle (SEA)to

London (LON)
Oct 07 2025 - Nov 04 2025
From
USD 518
Viewed 7 hrs ago
Round trip
Economy

Seattle (SEA)to

London (LHR)
Nov 26 2025 - Dec 09 2025
From
USD 522
Viewed 2 days ago
Round trip
Economy

Seattle (SEA)to

London (LHR)
Nov 16 2025 - Nov 26 2025
From
USD 522
Viewed 21 hrs ago
Round trip
Economy

Seattle (SEA)to

London (LHR)
Nov 09 2025 - Nov 14 2025
From
USD 522
Viewed 17 hrs ago
Round trip
Economy

Seattle (SEA)to

London (LHR)
Nov 30 2025 - Dec 05 2025
From
USD 522
Viewed 2 hrs ago
Round trip
Economy

Seattle (SEA)to

Glasgow (GLA)
Dec 06 2025 - Dec 11 2025
From
USD 517
Viewed 1 day ago
Round trip
Economy

Seattle (SEA)to

Glasgow (GLA)
Dec 07 2025 - Dec 11 2025
From
USD 517
Viewed 1 day ago
Round trip
Economy

Seattle (SEA)to

Glasgow (GLA)
Dec 10 2025 - Jan 10 2026
From
USD 517
Viewed 1 day ago
Round trip
Economy

Seattle (SEA)to

Glasgow (GLA)
Dec 11 2025 - Jan 10 2026
From
USD 517
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		Mar 19 2026 - Mar 23 2026

From

USD 518

Viewed 1 day ago

Seattle (SEA)London (LHR)Round trip
/
Economy		Feb 15 2026 - Feb 21 2026

From

USD 523

Viewed 1 day ago

Seattle (SEA)Glasgow (GLA)Round trip
/
Economy		Apr 30 2026 - May 04 2026

From

USD 475

Viewed 3 hrs ago

Seattle (SEA)Manchester (MAN)Round trip
/
Economy		Jan 18 2026 - Jan 26 2026

From

USD 525

Viewed 2 days ago

Seattle (SEA)Edinburgh (EDI)Round trip
/
Economy		Feb 28 2026 - Mar 08 2026

From

USD 660

Viewed 2 days ago

Seattle (SEA)London (LGW)Round trip
/
Economy		Feb 10 2026 - Mar 01 2026

From

USD 518

Viewed 4 hrs 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.