London (LHR) to Seattle (SEA) flights
There are direct flights from London Heathrow Airport to Seattle Tacoma International Airport, sold by 8 airlines (including codeshares): American Airlines, Air France, Alaska Airlines, Finnair, British Airways, Iberia, KLM and Virgin Atlantic. The distance is 7,702 km, about 9h 55m in the air. There are also 19 one-stop options, via airports such as Amsterdam, Paris and Frankfurt.
Live fares for LHR → SEASee all routes on the mapDirect flights from London to Seattle
| Route | Airlines (incl. codeshares) | Distance | Time (est.) |
|---|---|---|---|
| LHR → SEA | American Airlines, Air France, Alaska Airlines, Finnair, British Airways, Iberia, KLM, Virgin Atlantic | 7,702 km | ~9h 55m |
Best one-stop connections
Through the biggest hubs first. Times include about 100 minutes to change planes.
| Via | Airlines | Distance | Time (est.) |
|---|---|---|---|
| AMS Amsterdam | American Airlines and British Airways then KLM | 8,210 km | ~12h 40m |
| CDG Paris | American Airlines and Air France then Air France and ITA Airways | 8,396 km | ~12h 55m |
| FRA Frankfurt | American Airlines and British Airways then Condor and Lufthansa | 8,852 km | ~13h 30m |
| ORD Chicago | American Airlines and Finnair then American Airlines and Alaska Airlines | 9,105 km | ~13h 45m |
| JFK New York | American Airlines and Air France then American Airlines and Alaska Airlines | 9,426 km | ~14h 10m |
| EWR Newark | American Airlines and Finnair then American Airlines and Alaska Airlines | 9,416 km | ~14h 10m |
| DEN Denver | American Airlines and Finnair then American Airlines and Alaska Airlines | 9,141 km | ~13h 50m |
| YYZ Toronto | American Airlines and Air Canada then Air Canada | 9,014 km | ~13h 40m |
| LAS Las Vegas | American Airlines and Finnair then Alaska Airlines and Southwest Airlines | 9,790 km | ~14h 35m |
| IAD Washington | American Airlines and Finnair then United Airlines | 9,603 km | ~14h 25m |
| PHL Philadelphia | American Airlines and Finnair then American Airlines and Alaska Airlines | 9,507 km | ~14h 15m |
| SFO San Francisco | American Airlines and Finnair then American Airlines and Alaska Airlines | 9,709 km | ~14h 30m |
More from London and Seattle
- Seattle (SEA) to London (LHR) · return route
- All direct flights from London (LHR)
- All direct flights from Seattle (SEA)
- London to Istanbul (IST)
- London to Amsterdam (AMS)
- London to Paris (CDG)
- London to Frankfurt (FRA)
- London to Dubai (DXB)
- London to Beijing (PEK)
- London to Chicago (ORD)
- London to Barcelona (BCN)
- London to Dallas-Fort Worth (DFW)
- London to Madrid (MAD)
- London to Shanghai (PVG)
- London to Rome (FCO)
- Istanbul (IST) to Seattle
- Amsterdam (AMS) to Seattle
- Paris (CDG) to Seattle
- Frankfurt (FRA) to Seattle
- Dubai (DXB) to Seattle
- Beijing (PEK) to Seattle
- Chicago (ORD) to Seattle
- Dallas-Fort Worth (DFW) to Seattle
- Shanghai (PVG) to Seattle
- Atlanta (ATL) to Seattle
- Houston (IAH) to Seattle
- New York (JFK) to Seattle
Routes come from current airline fares, updated weekly (last update 9 November 2026), plus older schedule data for airports with few recent fares. “Direct” can include a few same-plane flights with a stop. Flight times are estimates from distance. Always check with the airline before booking.