Cheap flights from London Heathrow to Seattle

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Find out what a flight from London Heathrow to Seattle might cost

Prices vary based on date, airline, and availability. Compare several options if you're flying between London and Seattle.

Select your dates to check current offers.

Try shifting your departure forward or backward by a day to find better options. If you’re looking for a good deal, consider flying outside peak hours as well.

Best airport options between London and Seattle

If you're open to flying into or out of more than one airport, you’ll have more routes to compare.

  • Airports in London: London is served by 6 airports - City Airport, Gatwick, Heathrow, Luton, Southend, Stansted.
  • Airports in Seattle: In Seattle, 2 airports are available - Boeing Field, Lake Union.

Some airports offer extras like lounges, fast track, or self check-in — good to keep in mind. Comparing airports by services offered helps you balance cost and comfort.

Flights from London - Heathrow to Seattle - Tacoma

Adjust your flight filters for London Heathrow – Seattle

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Other popular destinations

Planning a trip to United States? These cities are popular too: Las Vegas, Los Angeles, Miami, New York City, Orlando.

Sorting options let you see the most affordable flights first. Some results may include extra fees shown only at checkout — always read carefully to see what’s included.
Frequently Asked Questions

Frequently asked questions about flights from London Heathrow to Seattle.

How much does an airline ticket from London Heathrow to Seattle cost?

Flight prices can vary a lot depending on the period and destination. At the moment, this information is not available for flights from London Heathrow to Seattle.

How far is London from Seattle?

London is about 7702 km from Seattle.

What are the airports in Seattle?

Seattle has 2 airports: Boeing Field, Lake Union.

What are the airports in London?

London has 6 airports: City Airport, Gatwick, Heathrow, Luton, Southend, Stansted.

What are the most popular cities in United States?

The most popular cities in United States according to our users' searches are: Las Vegas, Los Angeles, Miami, New York City, Orlando.

When should I book a flight from London to Seattle?

The best time to book a flight from London to Seattle is 1 month in advance, while the worst time is 1 week in advance.

What is the cheapest month to fly from London to Seattle?

This information is not available at the moment.

What is the most expensive month to fly from London to Seattle?

This information is not available at the moment.

What is the best day of the week to fly from London to Seattle?

This information is not available at the moment.