London (LHR) → San Francisco (SFO)
London Heathrow Airport to San Francisco International Airport · 4,652 nm (8,616 km) · about 10.5 h nonstop
Cheapest economy fares, checked daily · 1 day of history
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Economy
last checked 31m agoAmerican Airlines · 1 stop · 15h 10m · travel Sep 19
| Checked | Fare | Airline | Stops | Travel | Sold via | |
|---|---|---|---|---|---|---|
| 2026-09-09 | $440 | American Airlines | 1 stop | Sep 19 | — | Book ↗ |
Airlines selling the cheapest fares
Which carrier had the lowest fare on each of our checks over the last 90 days.
- American Airlines ×1
About this route
London (LHR) to San Francisco (SFO) is one of the busiest air routes in its market (Transatlantic). It links London Heathrow Airport in United Kingdom with San Francisco International Airport in United States. The great-circle distance is about 4,652 nautical miles (5,354 statute miles), so expect roughly 10.5 hours in the air nonstop.
Every night we ask our fare provider for the cheapest one-way economy fare other travellers recently found on this route and record it, with the airline and the seller it was found with. A fare is flagged as a deal when it falls at least 30% below the route's 90-day typical price. Prices are a research starting point, not live availability — the booking links open the itinerary so you can confirm what's on sale right now.
Fares are approximate, from public sources, and can be stale — always verify before booking.