How to estimate the price of a flight from Seattle to London Gatwick?

It depends. Prices for flights from Seattle to London fluctuate based on several factors.

£644 is the best price recorded in the last 15 days.

Checking fares across several nearby dates can help you see which days offer the best deals. Jetcost lets you track price changes and grab the best opportunities.

Best airport options between Seattle and London

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

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

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.

Plan your perfect flight from Seattle to London Gatwick

Jetcost gives you full control over your flight search. Filter by date, time, duration, price, and airline. See round-trip and one-way options from low-cost and full-service carriers like Ryanair, British Airways, Easyjet, and more.

Other popular destinations

Planning a trip to United Kingdom? Other frequent searches include: Birmingham, Edinburgh, London, Manchester, Newquay.

Some airlines include baggage in the fare, others don’t — always check the details before booking. If you're looking for round-trip flights, you can easily see the most convenient combinations.