Flights from Seattle to United Kingdom available from USD 457*

Promo code

Deals on flights in next three months

USD

Seattle (SEA)to

London (LON)
Feb 23 2026 - Mar 07 2026
From
USD 539
Viewed 22 hrs ago
Round trip
Economy

Seattle (SEA)to

London (LON)
Feb 23 2026 - Mar 09 2026
From
USD 539
Viewed 22 hrs ago
Round trip
Economy

Seattle (SEA)to

London (LON)
Feb 23 2026 - Mar 11 2026
From
USD 539
Viewed 22 hrs ago
Round trip
Economy

Seattle (SEA)to

London (LON)
Feb 23 2026 - Mar 17 2026
From
USD 539
Viewed 22 hrs ago
Round trip
Economy

Seattle (SEA)to

London (LHR)
Jan 17 2026 - Jan 26 2026
From
USD 542
Viewed 1 day ago
Round trip
Economy

Seattle (SEA)to

London (LHR)
Feb 28 2026 - Mar 09 2026
From
USD 542
Viewed 1 day ago
Round trip
Economy

Seattle (SEA)to

London (LHR)
Jan 20 2026 - Jan 25 2026
From
USD 543
Viewed 2 days ago
Round trip
Economy

Seattle (SEA)to

London (LHR)
Feb 10 2026 - Feb 19 2026
From
USD 543
Viewed 1 hour ago
Round trip
Economy

Seattle (SEA)to

Glasgow (GLA)
Jan 13 2026 - Jan 23 2026
From
USD 517
Viewed 17 hrs ago
Round trip
Economy

Seattle (SEA)to

Glasgow (GLA)
Jan 13 2026 - Jan 25 2026
From
USD 517
Viewed 17 hrs ago
Round trip
Economy

Seattle (SEA)to

Glasgow (GLA)
Jan 13 2026 - Jan 26 2026
From
USD 517
Viewed 17 hrs ago
Round trip
Economy

Seattle (SEA)to

Glasgow (GLA)
Jan 13 2026 - Jan 29 2026
From
USD 517
Viewed 17 hrs 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		Apr 17 2026 - Apr 25 2026

From

USD 457

Viewed 17 hrs ago

Seattle (SEA)London (LHR)Round trip
/
Economy		Apr 07 2026 - Apr 16 2026

From

USD 558

Viewed 19 hrs ago

Seattle (SEA)Glasgow (GLA)Round trip
/
Economy		Mar 07 2026 - Mar 13 2026

From

USD 517

Viewed 17 hrs ago

Seattle (SEA)Edinburgh (EDI)Round trip
/
Economy		Apr 08 2026 - Apr 17 2026

From

USD 543

Viewed 2 days ago

Seattle (SEA)Manchester (MAN)Round trip
/
Economy		Mar 16 2026 - Mar 24 2026

From

USD 522

Viewed 1 day ago

Seattle (SEA)London (LGW)Round trip
/
Economy		Apr 05 2026 - Apr 10 2026

From

USD 555

Viewed 18 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.