Cheap flights from London to San Francisco
Flights from London to San Francisco currently start at €390. Below are the cheapest dates, typical duration and airlines on this route. Search live fares when you are ready to book — prices change during the day.
Prices refresh daily · per adult · Typical time: 14h 5m
Key facts
- Lowest fare
- €390 · Tue 16 Feb
- Direct flights
- Yes
- Flight time
- 14h 5m
- Airlines
- Alaska Airlines, SWISS, Helvetic Airways, Finnair
- Cheapest month
- February 2027
- Distance
- 8630 km
Round trip
One way
Questions people ask before they book
How much are flights from London to San Francisco?
The lowest fare we currently show from London to San Francisco is €390 for one adult. That price is tied to specific dates and can sell out.
Are there direct flights from London to San Francisco?
Yes. Direct flights from London to San Francisco show up in current fares. Filter by Direct when you search to hide connections.
Which airlines fly from London to San Francisco?
Airlines showing fares on this route include Alaska Airlines, SWISS, Helvetic Airways, Finnair, British Airways, TAP Air Portugal. The cheapest airline is not always the one with a bag included.
How long is the flight from London to San Francisco?
A typical itinerary from London to San Francisco takes about 14h 5m, including connections when the cheapest fare is not direct.
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February 2027