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Cheap Flights from San Francisco to London
SFO → LON • About 10h 20m nonstop • 3 airlines
Adults
+12 years old
Children
2-11 years old
Infants
Under 2 years
Fares shown are the lowest we have recorded recently on this route and are not a live quote. Run a search above for today's availability, or call (800) 399-8818 and an agent will price it with you.
Flights from San Francisco (SFO) to London (LON)
The San Francisco to London route covers roughly 5,350 miles and takes about 10h 20m nonstop. 3 airlines compete on it — British Airways, Virgin Atlantic, United Airlines — which keeps fares moving and makes it worth comparing carriers rather than defaulting to the one you usually fly. We have seen one-way fares on this route start around $412.
London rewards repeat visits because no single trip covers it. The British Museum, the National Gallery and the Tate Modern are all free, and the city holds two thousand years of history within walking distance of the Thames.
It is also the best-connected airport city in Europe, which makes it a natural first stop before continuing anywhere on the continent.
Airlines flying SFO to LON
- British Airways
- Virgin Atlantic
- United Airlines
Airports on this route
- Departing: San Francisco International Airport (SFO)
- Departing: Oakland International Airport (OAK)
- Departing: Norman Y. Mineta San José International Airport (SJC)
- Arriving: London Heathrow Airport (LHR)
- Arriving: London Gatwick Airport (LGW)
- Arriving: London Stansted Airport (STN)
San Francisco is served by 3 airports. Fares between them can differ by $50 to $150 on the same dates, so ask us to price all of them before you book.
Best time to fly to London
May, June and September — long days, mild weather, and fares below the July and August peak.
Top things to do in London
- British Museum
- Tower of London
- Westminster Abbey and Big Ben
- Borough Market
- Tate Modern
- Hyde Park
- West End theatre
How to save on San Francisco to London flights
- Shift your departure by one or two days — midweek departures on this route are consistently cheaper than Friday and Sunday.
- Book four to eight weeks ahead. Last-minute fares on SFO to LON routinely run double the advance price.
- Compare all 3 carriers rather than checking one airline's own site.
- Heathrow, Gatwick and Stansted serve very different carriers; price all three before booking.
- A contactless card taps straight onto the Tube and buses with a daily fare cap — no separate ticket needed.
- The major national museums charge nothing for general admission.
About flights from San Francisco to London
Fares on the SFO to LON route move with demand, so flexibility is worth more than timing tricks. Shifting your departure by a day or two, flying midweek instead of Friday or Sunday, and booking four to eight weeks ahead all reduce the fare on this route. San Francisco is served by 3 airports, so ask us to price all of them — the difference is often significant. Our agents also hold consolidator and unpublished fares that do not appear in online results.
British Airways, Virgin Atlantic, United Airlines all operate on this route. British Airways typically offers the most frequencies, with Virgin Atlantic and United Airlines providing competing schedules. Availability varies by season and by which San Francisco airport you depart from, so it is worth comparing all carriers before booking.
A nonstop flight takes about 10h 20m. Itineraries with a connection typically add two to four hours depending on the layover city and the length of the stop.
The two cities are roughly 5,350 miles apart by air.
Departures leave from San Francisco International Airport (SFO), Oakland International Airport (OAK), Norman Y. Mineta San José International Airport (SJC). Arrivals land at London Heathrow Airport (LHR), London Gatwick Airport (LGW), London Stansted Airport (STN).
May, June and September — long days, mild weather, and fares below the July and August peak.