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- Flights from Seattle to London
What’s the cost of 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.
Choose a date to explore the best fares now.
If possible, avoid holiday periods: ticket prices tend to rise quickly and availability drops, especially on busy routes. Morning and evening flights are often in high demand too — book early to get a good fare.
Which airports serve Seattle and London?
When planning a trip of about 7702 km, it's a good idea to check flights from surrounding airports too.
- Airports in Seattle: Seattle is connected to 2 airports - Boeing Field, Lake Union.
- Airports in London: London offers flights from 6 airports - City Airport, Gatwick, Heathrow, Luton, Southend, Stansted.
The closest airport isn’t always the cheapest — it’s worth checking the alternatives too. In some cities, smaller airports offer lower fares than the main ones.
Plan smarter: flights from Seattle to London Heathrow
Find the flight that fits your plans with Jetcost. You can filter results by stops, agencies, budget, time of day, and airline — all in one search.
Other popular destinations
Travelers flying to United Kingdom also checked out: Edinburgh, Glasgow, London, Manchester, Newquay.
Comparing offers from multiple agencies helps you find the best price for the same route. You can also spot exclusive deals from individual airlines right in the results list.
Frequently asked questions about flights from Seattle to London Heathrow.
How much does an airline ticket from Seattle to London Heathrow cost?
How far is Seattle from London?
What are the airports in London?
What are the airports in Seattle?
What are the most popular cities in United Kingdom?
When should I book a flight from Seattle to London?
What is the cheapest month to fly from Seattle to London?
What is the most expensive month to fly from Seattle to London?
What is the best day of the week to fly from Seattle to London?
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