Seattle (SEA) to London (LHR) flights
There are direct flights from Seattle Tacoma International Airport to London Heathrow 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 SEA → LHRSee all routes on the mapDirect flights from Seattle to London
| Route | Airlines (incl. codeshares) | Distance | Time (est.) |
|---|---|---|---|
| SEA → LHR | 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 | KLM then American Airlines and British Airways | 8,210 km | ~12h 40m |
| CDG Paris | Air France and ITA Airways then American Airlines and Air France | 8,396 km | ~12h 55m |
| FRA Frankfurt | Condor and Lufthansa then American Airlines and British Airways | 8,852 km | ~13h 30m |
| ORD Chicago | American Airlines and Alaska Airlines then American Airlines and Finnair | 9,105 km | ~13h 45m |
| JFK New York | American Airlines and Alaska Airlines then American Airlines and Air France | 9,426 km | ~14h 10m |
| EWR Newark | American Airlines and Alaska Airlines then American Airlines and Finnair | 9,416 km | ~14h 10m |
| DEN Denver | American Airlines and Alaska Airlines then American Airlines and Finnair | 9,141 km | ~13h 50m |
| YYZ Toronto | Air Canada then American Airlines and Air Canada | 9,014 km | ~13h 40m |
| LAS Las Vegas | Alaska Airlines and Southwest Airlines then American Airlines and Finnair | 9,790 km | ~14h 35m |
| IAD Washington | United Airlines then American Airlines and Finnair | 9,603 km | ~14h 25m |
| PHL Philadelphia | American Airlines and Alaska Airlines then American Airlines and Finnair | 9,507 km | ~14h 15m |
| SFO San Francisco | American Airlines and Alaska Airlines then American Airlines and Finnair | 9,709 km | ~14h 30m |
More from Seattle and London
- London (LHR) to Seattle (SEA) · return route
- All direct flights from Seattle (SEA)
- All direct flights from London (LHR)
- Seattle to Istanbul (IST)
- Seattle to Amsterdam (AMS)
- Seattle to Paris (CDG)
- Seattle to Frankfurt (FRA)
- Seattle to Dubai (DXB)
- Seattle to Beijing (PEK)
- Seattle to Chicago (ORD)
- Seattle to Dallas-Fort Worth (DFW)
- Seattle to Shanghai (PVG)
- Seattle to Atlanta (ATL)
- Seattle to Houston (IAH)
- Seattle to New York (JFK)
- Istanbul (IST) to London
- Amsterdam (AMS) to London
- Paris (CDG) to London
- Frankfurt (FRA) to London
- Dubai (DXB) to London
- Beijing (PEK) to London
- Chicago (ORD) to London
- Barcelona (BCN) to London
- Dallas-Fort Worth (DFW) to London
- Madrid (MAD) to London
- Shanghai (PVG) to London
- Rome (FCO) to London
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.