Seattle, WA to London flights from £285

Flights starting at £285. Choose between WestJet, easyJet, or Alaska Airlines to find the best price.

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One-way trips

Updated:

Round trips

Seattle SEAReykjavik KEFSeattle SEA

Icelandair

£459
Seattle SEAReykjavik KEFSeattle SEA

Icelandair

£459

Updated:

7709 km
Distance
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Travelers usually depart from Seattle–Tacoma International, Seattle, WA - King Street Station, Seattle, WA - Greyhound Station, Seattle, WA - Ferry Terminal, or Boeing Field when they travel from Seattle to London. Book your trip to arrive at Heathrow, Gatwick, London Stansted, Luton, or London City. The distance between Seattle and London is 7709 km. The most popular airlines for this route are WestJet, easyJet, Alaska Airlines, Delta Air Lines, and British Airways. Seattle and London have 401 direct flights per week. When you arrive at London, consider visiting Isle of Wight, St. Paul's Cathedral, Tintern Abbey, United Kingdom, British Museum, Stonehenge, Natural History Museum, Tate Modern, Tower of London, Portsea Island, Canterbury Cathedral, St Fagans: National History Museum, Avebury, St. David's Cathedral, Cardiff, and Roman Baths, Bath.

Weekly direct flights

MondaysTuesdaysWednesdaysThursdaysFridaysSaturdaysSundays
Direct flights81184827
Fly direct with

American Airlines on Mondays, and Tuesdays.

Alaska Airlines on Tuesdays.

Finnair on Tuesdays.

British Airways on Mondays, Tuesdays, Wednesdays, Thursdays, Fridays, Saturdays, and Sundays.

Delta Air Lines on Mondays, Tuesdays, Wednesdays, Thursdays, Fridays, Saturdays, and Sundays.

Iberia Airlines on Tuesdays.

KLM Royal Dutch Airlines on Fridays.

Virgin Atlantic Airways on Mondays, Tuesdays, Wednesdays, Thursdays, Fridays, and Sundays.

Check-in for a flight from Seattle to London

NameCarrier codeIATA CodePassport needed during bookingOnline check-in available
WestJetWJAWSNoOpens 24 days before flight
Closes 1 hours before flight
easyJetEZYU2YesOpens 720 days before flight
Closes 2 hours before flight
Alaska AirlinesASAASYesOpens 24 days before flight
Closes 1 hours before flight
Delta Air LinesDALDLYesOpens 24 days before flight
Closes 1 hours before flight
British AirwaysBAWBAYes0
0

United Kingdom COVID-19 travel restrictions

Latest COVID-19 travel restrictions in United Kingdom – 11/2022
Your trip summary

Most travelers from Seattle, SEA can enter London, LHR, but there are restrictions.

Departure

Travel restrictions
  • Travel is allowed
  • Proof of a negative pre-departure COVID-19 test result is not required
  • Quarantine is not required
Visa requirements
  • Visa is not required
Additional information
  • Masks are recommended in certain settings

Return

Travel restrictions
  • Travel is allowed with restrictions for vaccinated travelers
  • Proof of negative pre-departure COVID-19 test results or recovery certificate is not required for United States
  • Quarantine is not required for vaccinated travelers
Visa requirements
  • Visa is not required
Forms and documents
  • Mandatory proof of COVID-19 vaccination for United States
  • Mandatory travel attestation form
  • Recommended contact-tracing app

Information is provided as guidance only and accurate at the time of publishing. Always check government websites and airline materials before booking and traveling.

Learn more about COVID-19 restrictions in United Kingdom in our dedicated Stories article.

Frequently asked questions

What is the flight distance between Seattle and London?
The flight distance between Seattle and London is 7709 km.
What airlines offer nonstop (direct) flights between Seattle and London?
Several carriers operate flights between Seattle and London. Airlines offering nonstop (direct) flights include Virgin Atlantic Airways, American Airlines, British Airways, Finnair, KLM Royal Dutch Airlines, Iberia Airlines, Delta Air Lines, Alaska Airlines.
What are the most popular routes to and from Seattle?
Travelers frequently search for route combinations, such as Seattle and Las Vegas, Denver, Phoenix, Dublin, Melbourne, Orlando, Salt Lake City, San Jose, Vancouver, Manchester, Edinburgh, San Francisco, Philadelphia, Dallas, Washington, D.C., New York, Atlanta, Los Angeles, Rome, Raleigh.
What are the most popular routes to and from London?
Travelers frequently search for route combinations, such as London and Reykjavik, Bucharest, Athens, Dublin, Istanbul, Lisbon, Sofia, Tirana, New York, Edinburgh, Belfast, Larnaca, Glasgow, Málaga, Antalya, Faro, Thessaloniki, Budapest, Madrid, Alicante.
Which airports are there in Seattle?
Seattle is mainly served by Seattle–Tacoma International. But there are other airports nearby, including Boeing Field, Kenmore Air Harbor Seaplane Base.
What airports are near Seattle?
The main airport in Seattle is Seattle–Tacoma International. It is also served by Portland International, Vancouver International, Bellingham International, Paine Field Everett, Abbotsford International, Pangborn Memorial, Victoria Inner Harbour SPB, Yakima Air Terminal, Friday Harbor Airport, Vancouver Harbour Flight Centre.
What airports are near London?
The main airport in London is Heathrow. It is also served by Birmingham, Bristol, East Midlands, Southampton, Cardiff, Bournemouth, Exeter, Humberside, Norwich, Coventry.
What buses and trains depart from Seattle?
A number of bus and train companies depart from Seattle, including Greyhound.
Is it possible to combine flights, buses, and trains in one itinerary when traveling between Seattle and London?
Yes, it's possible to combine different modes of transport between Seattle and London thanks to our Virtual Interlining technology. Making use of not only flights but also trains and buses between Seattle and London can give rise to new adventures. Read more about how Virtual Interlining works on Kiwi.com Stories.
What is Virtual Interlining and how do I use it?
Which airlines fly between Seattle and London?
When's the best time to travel between Seattle and London?
What flights operate between Seattle and London?
How many airports are there near Seattle?
How many airports are there near London?
Is it possible to reach Seattle by bus or train?
What time do nonstop (direct) flights between Seattle and London depart?
What time do nonstop (direct) flights between Seattle and London arrive?
What time do flights between Seattle and London depart?
What time do flights between Seattle and London arrive?

Planning a trip? Thanks to our Virtual Interlining algorithm, we offer billions of route combinations between any A and any B in the world by plane, train, and bus. Find the cheapest routes and best deals for you, as well as the best dates on which to travel.

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