Flights from Seattle to United Kingdom available from USD 467*

Promo code

Deals on flights in next three months

USD

Seattle (SEA)to

London (LON)
Sep 30 2025 - Oct 09 2025
From
USD 521
Viewed 7 hrs ago
Round trip
Economy

Seattle (SEA)to

London (LON)
Sep 30 2025 - Oct 15 2025
From
USD 521
Viewed 7 hrs ago
Round trip
Economy

Seattle (SEA)to

London (LON)
Oct 01 2025 - Oct 15 2025
From
USD 521
Viewed 7 hrs ago
Round trip
Economy

Seattle (SEA)to

London (LON)
Oct 01 2025 - Oct 23 2025
From
USD 521
Viewed 7 hrs ago
Round trip
Economy

Seattle (SEA)to

London (LHR)
Sep 13 2025 - Sep 20 2025
From
USD 467
Viewed 2 days ago
Round trip
Economy

Seattle (SEA)to

London (LHR)
Aug 12 2025 - Aug 21 2025
From
USD 491
Viewed 23 hrs ago
Round trip
Economy

Seattle (SEA)to

London (LHR)
Sep 05 2025 - Sep 10 2025
From
USD 539
Viewed 1 day ago
Round trip
Economy

Seattle (SEA)to

London (LHR)
Sep 13 2025 - Sep 17 2025
From
USD 544
Viewed 23 hrs ago
Round trip
Economy

Seattle (SEA)to

Glasgow (GLA)
Sep 25 2025 - Oct 19 2025
From
USD 526
Viewed 11 hrs ago
Round trip
Economy

Seattle (SEA)to

Glasgow (GLA)
Sep 25 2025 - Oct 22 2025
From
USD 526
Viewed 11 hrs ago
Round trip
Economy

Seattle (SEA)to

Glasgow (GLA)
Sep 25 2025 - Oct 25 2025
From
USD 526
Viewed 11 hrs ago
Round trip
Economy

Seattle (SEA)to

Glasgow (GLA)
Sep 26 2025 - Oct 22 2025
From
USD 526
Viewed 11 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		Jan 26 2026 - Feb 02 2026

From

USD 521

Viewed 1 day ago

Seattle (SEA)London (LHR)Round trip
/
Economy		Feb 07 2026 - Feb 23 2026

From

USD 503

Viewed 1 day ago

Seattle (SEA)Glasgow (GLA)Round trip
/
Economy		Feb 08 2026 - Feb 15 2026

From

USD 519

Viewed 1 day ago

Seattle (SEA)Edinburgh (EDI)Round trip
/
Economy		Dec 11 2025 - Jan 06 2026

From

USD 520

Viewed 23 hrs ago

Seattle (SEA)London (LGW)Round trip
/
Economy		Jan 08 2026 - Jan 18 2026

From

USD 521

Viewed 7 hrs ago

Seattle (SEA)Manchester (MAN)Round trip
/
Economy		Jan 13 2026 - Jan 29 2026

From

USD 528

Viewed 2 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.