Flights from Seattle to London
Nonstop flights from Seattle (SEA) to London (LHR) take about 10h 8m. Virgin Atlantic flies it. Lowest fare seen: $364 one-way, nonstop (8 Oct 2026).
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Seattle → London flights
Fares seen from $364 one-way (8 Oct 2026). Live prices for your dates on the booking site.
Route snapshot: Seattle to London
Seattle (SEA) to London (LHR) is 7,702 km, about 10h 8m flying nonstop. Airlines with flights or nonstop fares on this route include Virgin Atlantic. The lowest one-way fare seen recently was $364 sold by Iberia (nonstop), departing 15 Nov 2026 — as of 8 Oct 2026.
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When you land in London
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Getting out of London (LHR)
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Tours, tickets & day trips
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Why travelers watch this route
Fares seen
The lowest one-way fare seen was $364 sold by Iberia (nonstop), departing 15 Nov 2026; with connections it dropped to $320. Checked 8 Oct 2026 — fares move daily.
Seasonality
London has year-round travel demand, so fare differences often depend more on booking window and airline competition than on one single peak season.
Who flies it
Airlines with flights or nonstop fares here include Virgin Atlantic. More carriers may sell it with a connection.
Airlines flying Seattle to London
Carriers on SEA–LHR according to our route data and nonstop fares seen as of 8 Oct 2026. Not a complete list.
Best time to fly to London
Based on weather and travel conditions in UK
UK is a great destination year-round. Check local weather patterns before booking and consider shoulder seasons for lower prices and fewer crowds.
Direct & Connecting Flights
Nonstop flights link Seattle (SEA) and London (LHR), taking about 10h 8m. Connecting itineraries can be cheaper but take longer.
Fares & Price Guide
The lowest one-way fare seen on SEA–LHR was $364 USD (nonstop) as of 8 Oct 2026. Set a fare alert to be told when it drops.
About London, UK
Flights arrive at London Heathrow Airport (LHR). See the destination guide for hotels, visa requirements and travel tips.
Plan this route beyond the fare
Use the wider AirConnect network to move from a route check into airports, airlines, visa, and trip planning.
Search SEA → LHR
See current Seattle to London fares on Trip.com.
Airport Guides
Check terminals, transport and arrival details for SEA and LHR.
Airline Route Maps
Explore the networks of airlines flying from Seattle and London.
London Planning
Turn this flight route into a full trip with destination, hotel and activity planning.
Price Alerts
Track fare drops on SEA–LHR and related city pairs.
Visa Guides
Check entry rules before booking flights from Seattle to UK.
Explore related route clusters
More routes in this part of the world.
Frequently asked questions — Seattle to London flights
How long is the flight from Seattle to London?
How far is Seattle from London by air?
Which airlines fly from Seattle to London?
How much does a flight from Seattle to London cost?
Do I need a visa to travel from Seattle to UK?
What is the best time to visit London?
Sources: fares from Travelpayouts flight-search data, seen 8 Oct 2026; airlines from each carrier's published network and nonstop fares on sale; distance from OurAirports coordinates; flight time estimated from distance. Fares change daily.
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