Flights from Seattle to London
Fares, airlines, flight time and both airports for SEA–LHR.
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 and British Airways. The lowest one-way fare seen recently was $320 with Virgin Atlantic (nonstop), departing 12 Apr 2027 — as of 11 Sept 2026.
Check fares, see which airlines fly this route, and sort out airports, visas, and what to do at the destination — all before you book.
When you land in London
Sort the airport transfer and pick a few things to do so you hit the ground running.
Getting out of London (LHR)
Skip the taxi rank and lock in your fare before you land.
Pre-book a fixed-price transfer
Our pickDriver waits at arrivals with your name, tracks your flight, and the price you see is the price you pay. English-speaking, fixed price. No surge, no haggling at 2am.
Check transfer pricesRenting a car instead? Compare rentals with free cancellation.Things to do in London
Lock in a few experiences before you go — the good ones sell out.
Tours, tickets & day trips
Our pickGetYourGuide has the deepest catalogue for London and free cancellation on most experiences — book now, decide later.
Browse LondonJust need timed-entry attraction tickets in London? Try Tiqets.Want a private driver-guide? Trip.com Private Tours in London.Flights SEA → LHR
Compare live fares from Seattle to London across 750+ airlines.
Find hotels in London
Hotels, hostels & more · Trip.com
Why travelers watch this route
Fares seen
The lowest one-way fare seen was $320 with Virgin Atlantic (nonstop), departing 12 Apr 2027; with connections it dropped to $298. Checked 11 Sept 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 and British Airways. 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 11 Sept 2026. Not a complete list.
Seattle–London route intelligence
Updated analysis of the SEA–LHR corridor — distance, timing, and connecting options.
Route profile
Seattle (SEA) to London (LHR) is a long-haul corridor spanning approximately 7,701 km, with typical block time around 9h 45m.
Best time to book
Long-haul fares on this corridor are best booked 8-12 weeks ahead. Premium-economy upgrades are often cheapest at the 10-week mark.
Connecting hubs to compare
If a nonstop on the SEA–LHR corridor is sold out or overpriced, one-stop itineraries through London (LHR), Reykjavik (KEF), Dublin (DUB) are typically the strongest alternatives — often 20-40% cheaper than nonstop, with 3-12 hours added to total journey time.
Visa & arrival
Passport-validity and visa requirements differ between and UK — most arriving travellers need at least six months of remaining passport validity. Check AirConnect's visa checker for your nationality before booking, especially if you plan to connect through a third country en route.
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 $320 USD (nonstop) as of 11 Sept 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
These hubs help search engines and travelers understand where this corridor sits in the wider route graph.
Deals on Seattle → London
Limited-time offers — grab them before they're gone
Frequently asked questions — Seattle to London flights
Ready to book SEA–LHR?
Set a fare alert, check your visa, or search flights now.