Cheap flights from London to Seattle, WA

Flights starting at $358. Choose between Air Canada, United Airlines, or Delta Air Lines to find the best price.

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One-way trips

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London STNOslo OSLNew York JFKSeattle SEA

Multiple carriers

$291

Updated:

Round trips

London LHRSeattle SEA

Multiple carriers

$557
London LHRSeattle SEA

Virgin Atlantic Airways

$558

Updated:

4790 miles
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Travelers usually depart from Heathrow, Gatwick, London Stansted, Luton, or London City when they travel from London to Seattle. Book your trip to arrive at Seattle–Tacoma International, Seattle, WA - King Street Station, Seattle, WA - Greyhound Station, Seattle, WA - Ferry Terminal, or Boeing Field. The distance between London and Seattle is 7709 km. The most popular airlines for this route are Air Canada, United Airlines, Delta Air Lines, Lufthansa, and Alaska Airlines. London and Seattle have 366 direct flights per week.

Weekly direct flights

MondaysTuesdaysWednesdaysThursdaysFridaysSaturdaysSundays
Direct flights7958576
Fly direct with

American Airlines on Mondays, Tuesdays, Wednesdays, Thursdays, Fridays, Saturdays, and Sundays.

British Airways on Saturdays, and Sundays.

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

Iberia Airlines on Mondays, Wednesdays, Saturdays, and Sundays.

KLM Royal Dutch Airlines on Mondays, Tuesdays, Wednesdays, Fridays, and Sundays.

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

Check-in for a flight from London to Seattle

NameCarrier codeIATA CodePassport needed during bookingOnline check-in available
Air CanadaACAACYesNo
United AirlinesUALUAYesNo
Delta Air LinesDALDLYesOpens 24 days before flight
Closes 1 hours before flight
LufthansaDLHLHYes0
0
Alaska AirlinesASAASYesOpens 24 days before flight
Closes 1 hours before flight

United States COVID-19 travel restrictions

Latest COVID-19 travel restrictions in United States – 12/2022
Your trip summary

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

Departure

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
  • Electronic Travel Authorization (ESTA)
Forms and documents
  • Mandatory proof of COVID-19 vaccination for United States
  • Mandatory travel attestation form
  • Recommended contact-tracing app
Additional information
  • Health screening may be required on arrival
  • Masks are recommended in certain settings

Return

Travel restrictions
  • Travel is allowed
  • Proof of a negative pre-departure COVID-19 test result is not required
  • Quarantine is not required
Visa requirements
  • Electronic Travel Authorization (ESTA)

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 States in our dedicated Stories article.

Frequently asked questions

How long does it take to travel from London to Seattle?
A one-way nonstop (direct) flight between London and Seattle takes around 10 hours.
What is the flight distance between London and Seattle?
The flight distance between London and Seattle is 7709 km.
What airlines offer nonstop (direct) flights between London and Seattle?
Several carriers operate flights between London and Seattle. Airlines offering nonstop (direct) flights include Virgin Atlantic Airways, American Airlines, British Airways, KLM Royal Dutch Airlines, Iberia Airlines, Delta Air Lines.
What are the most popular routes to and from London?
Travelers frequently search for route combinations, such as London and New York, Tel Aviv, Boston, Los Angeles, Chicago, San Francisco, Washington, D.C., Dublin, Athens, Atlanta, Barcelona, Paris, Amsterdam, Rome, Denver, Dallas, Edinburgh, Lisbon, Miami, Madrid.
What are the most popular routes to and from Seattle?
Travelers frequently search for route combinations, such as Seattle and Denver, Atlanta, Houston, Las Vegas, Austin, Orlando, Los Angeles, Salt Lake City, Mexico City, Paris, Washington, D.C., Detroit, New York, Minneapolis, Phoenix, Dallas, Raleigh, Charlotte, Cleveland, Chicago.
Which airports are there in London?
London is mainly served by Heathrow. But there are other airports nearby, including Gatwick, London Stansted, Luton, London City, London Southend, RAF Northolt.
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, Norwich, Humberside, Coventry.
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, Yakima Air Terminal, Pangborn Memorial, Victoria Inner Harbour SPB, Friday Harbor Airport, Vancouver Harbour Flight Centre.
What buses and trains depart from London?
A number of bus and train companies depart from London, including National Express.
Is it possible to combine flights, buses, and trains in one itinerary when traveling between London and Seattle?
What is Virtual Interlining and how do I use it?
Which airlines fly between London and Seattle?
When's the best time to travel between London and Seattle?
What flights operate between London and Seattle?
How many airports are there near London?
How many airports are there near Seattle?
Is it possible to reach London by bus or train?
What time do nonstop (direct) flights between London and Seattle depart?
What time do nonstop (direct) flights between London and Seattle arrive?
What time do flights between London and Seattle depart?
What time do flights between London and Seattle 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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