Seattle to London flights
Direct and connecting flights from Seattle Tacoma International Airport (SEA) to London Heathrow Airport (LHR) — airlines, aircraft types, and the safety record for this route.
Route FAQ
How long does the flight from Seattle to London take?
Flight time from Seattle (SEA) to London (LHR) depends on routing, aircraft type, and whether the flight is direct or connecting. A direct flight typically reflects great-circle distance plus winds, while one-stop options can add several hours depending on the layover airport. The typical block time and frequency we have observed for this route are shown above.
Which airlines fly from Seattle to London?
Airline availability for SEA to LHR changes by season and sometimes week to week as carriers adjust capacity. The airlines and aircraft types observed operating this route, both direct and connecting, are listed below based on real flight-tracking data.
Are there direct flights from Seattle to London?
Direct (nonstop) availability on SEA to LHR varies by date, day of week, and season. Busy city pairs usually have multiple daily nonstops, while thinner routes may only have direct service a few days per week or only during peak seasons.
No fatal or serious occurrence recorded and attributed to operators on this pair in the last 90 days.
- British Airways5-yr attributed events: 10Last 90 days: none recorded
- Virgin Atlantic Airways5-yr: no attributed events (coverage limited)Last 90 days: none recorded
| Carrier | Sightings / 90d | Safety events |
|---|---|---|
| British Airways | 3 sightings | No recorded events |
| Virgin Atlantic Airways | 2 sightings | No recorded events |
Planning SEA → LHR
SEA to LHR is a long-haul route of 7,702 km (4,786 mi). See the return LHR → SEA route.
Alternative airports near Seattle: Seattle (BFI) — 9 km, Renton (RNT) — 9 km, Tacoma (TIW) — 28 km.
Alternative airports near London: Northolt (NHT) — 10 km, Wycombe (HYC) — 29 km, Farnborough (FAB) — 31 km.