Flights from Seattle to London available from

Fly in the next three months: flights from Seattle to London

USD

Seattle (SEA)to

London (LHR)
Apr 24 2024 - May 08 2024
From
USD 622*
Round trip
/
Economy

Seattle (SEA)to

London (LHR)
Apr 22 2024 - Aug 21 2024
From
USD 690*
Round trip
/
Economy

Seattle (SEA)to

London (LHR)
Apr 21 2024 - May 15 2024
From
USD 607*
Round trip
/
Economy

Seattle (SEA)to

London (LHR)
Apr 15 2024 - Apr 25 2024
From
USD 615*
Round trip
/
Economy

Seattle (SEA)to

London (LHR)
Mar 13 2024 - Mar 20 2024
From
USD 729*
Round trip
/
Economy

Seattle (SEA)to

London (LHR)
May 01 2024 - May 09 2024
From
USD 744*
Round trip
/
Economy

Seattle (SEA)to

London (LHR)
May 09 2024 - May 29 2024
From
USD 747*
Round trip
/
Economy

Seattle (SEA)to

London (LHR)
May 09 2024 - May 26 2024
From
USD 747*
Round trip
/
Economy

*Fares displayed have been collected within the last 72hrs and may no longer be available at the time of 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 London with Icelandair

USD
FromSeattle (SEA)ToLondon (LHR)Round trip
/
Economy
Sep 23 2024 - Oct 08 2024

From

USD 638*

Seen: 11 hrs ago

FromSeattle (SEA)ToLondon (LHR)Round trip
/
Economy
Dec 01 2024 - Dec 13 2024

From

USD 632*

Seen: 2 days ago

FromSeattle (SEA)ToLondon (LHR)Round trip
/
Economy
Oct 01 2024 - Oct 07 2024

From

USD 682*

Seen: 2 days ago

FromSeattle (SEA)ToLondon (LHR)Round trip
/
Economy
Sep 30 2024 - Oct 06 2024

From

USD 737*

Seen: 2 days ago

*Fares displayed have been collected within the last 72hrs and may no longer be available at the time of booking

Flights to London from Seattle

Get ready to embark on an exhilarating journey through the heart of London town, where iconic landmarks, upbeat culture, and unforgettable experiences are found around every corner. For an unrivaled in-flight experience and competitive airfares, choose Icelandair to fly from Seattle to London Heathrow (LHR) or Gatwick Airport (LGW).

 

FAQs about travel from Seattle to London

Helpful information for passengers traveling to London from Seattle

What is the flight duration from Seattle to London, England?

The average flight duration from Seattle to London Gatwick or Heathrow Airport is approximately 9 hours and 30 minutes non-stop, though this estimate does not include any planned stopovers.

When you book flights to London from Seattle with Icelandair, passengers have the option to extend their stay in Iceland for up to seven days.

When is the best time to fly from Seattle to London?

The optimal time to fly to London from Seattle largely depends on your personal preferences and travel needs.

While summer is characterized by long, bright days – perfect for outdoor events and sightseeing, spring (April to June) and early fall (September) tend to offer lower airfares, and the weather is still pleasant.

Which airport in London will I land at?

Passengers booking plane tickets from Seattle to London can fly into London Heathrow Airport (LHR) or Gatwick Airport (LGW).

You can use the flight finder tool above to select flights to your desired airport.

Does Icelandair offer direct flights to London from Seattle?

Passengers flying from Seattle to London with Icelandair will transfer at Keflavík International Airport. From there, you will fly directly to London Heathrow or Gatwick airport.

The flight time from KEF to LHR/LGW is around 3 hours.

How can I find cheap flights from Seattle to London?

Being flexible about which season you fly during, as well as which London airport you depart from can help you find a good deal on your tickets. Flying on a weekday may also help you secure a lower airfare, too.

We also recommend checking our flight deals page regularly and booking in advance.