How much is a flight from Seattle to London Heathrow?

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

Pick a travel date to see today’s available fares.

Fares change often — checking several times throughout the week can make a big difference. Booking in advance often means access to lower prices for the Seattle - London Heathrow route.

Flying between Seattle and London? Consider these airports

Depending on your destination and where you’re starting from, it might make sense to look beyond the main hubs.

• Airports in Seattle: Seattle has 2 airports - Boeing Field, Lake Union.
• Airports in London: London has 6 airports - City Airport, Gatwick, Heathrow, Luton, Southend, Stansted.

Check if your destination airport has a rail link — it can make getting around easier. Jetcost lets you view options from all Seattle airports in a single search.

Flight filters for the route Seattle – London Heathrow

Customize your search on Jetcost to focus only on flights that suit your needs. Whether you want a direct connection, specific airline, or shorter layover, filters help you find it faster.

Other popular destinations

Flights to United Kingdom are often searched alongside: Edinburgh, Glasgow, London, Manchester, Newquay.

The cheapest flights might leave at odd hours or arrive at less central airports — keep that in mind. If you travel often, you can always select your trusted airlines from the available options.