When to Fly to London
Chelsea Flower Show
Peak: May 20, 2026
Wimbledon Championships
Peak: July 12, 2026
Christmas Markets and Winter Wonderland
Peak: December 15, 2026
Wimbledon Championships makes this a special time to visit London
Frequently Asked Questions
How much do flights to London cost?
Round-trip fares to London have recently been found from around $573 from Seattle. Prices vary by origin city and time of year. We check fares daily from 1 US cities.
What is the cheapest month to fly to London?
Flight prices to London fluctuate throughout the year. Our GO Score algorithm tracks daily prices and flags when fares drop below average. Check back regularly as scores update daily, or browse our "When to Fly" section above for timing insights.
Which US city has the cheapest flights to London?
Based on recent searches, Seattle (SEA) currently has the cheapest fares to London at around $573 round-trip.
What is the best time to visit London?
Right now is notable for London: Wimbledon Championships. Our GO Score (currently 63/100) combines flight prices, weather, events, and currency data to find the best travel windows.
How long is the flight to London?
Flight times to London vary depending on your departure city and whether you fly direct or with connections. Check individual route pages for more details and to compare fares from your nearest airport.
Fares found from Seattle (SEA). Prices may vary.