Find cheap flights from Seattle to London Heathrow

Fly Scanner helps you compare the best deals to London Heathrow, offering the most cost effective solutions for your trip. Find your airline ticket at the best price in seconds by comparing fares from hundreds of airlines and online travel agencies in a single search!

See only the ideal flight deals for your needs

Fly Scanner compares hundreds of offers from Seattle to London Heathrow of low cost flights, online travel agency promotions, airlines from all over the world, domestic and international routes, direct and non-stop flights. The search engine of Fly Scannershows you the best flight selections, all in one click and in seconds.

Compare cheap Seattle - London Heathrow flights

Fly Scanner finds the best travel solutions among the offers of hundreds of airlines, proposing even cheaper alternatives.

Direct flights and flexible dates

Fly Scanner helps you save money by also showing you travel deals for days close to your chosen dates and for airports close to Seattle or London Heathrow. Moreover, if you want to avoid stopovers, with Fly Scanner you can compare only the prices of direct flights from Seattle to London Heathrow by simply checking the option on the search page.