Price observed over the last 3 months for a round trip.
Compare all flight tickets and find cheap flights from San Francisco to London
Today’s flight suggestion for San Francisco - London
Outbound 6 December 2026 · Inbound 22 December 2026
Today’s suggestion
23:32
SFO 21:40 +1
LHR14h 8m
1 stop
06:40
STN 14:50 +1
SFO40h 10m
2 stops
From £689
23:45
SFO 06:55 +2
LHR23h 10m
1 stop
06:40
STN 14:50 +1
SFO40h 10m
2 stops
From £689
07:30
SFO 06:55 +1
LHR15h 25m
1 stop
06:40
STN 14:50 +1
SFO40h 10m
2 stops
From £689
Cheapest flight
£186
Average price of a round trip
£225
Average price recorded over the last 3 months for a round trip.
Flight duration
31h34
A flight from San Francisco to London takes on average 31h34.
Best time
October
According to user searches, the ideal month to go to London is October.
Tips for finding cheap flights from San Francisco to London
Check out our tips for booking your flight to London (United Kingdom) from San Francisco (USA) at the cheapest possible price.
Usually, the cheapest month to pick up a ticket on this route is November, with an average ticket price of £225 (calculation over the last two years). The most touristic season corresponds to the months of November, October and December.
For an attractive price, it is advisable to buy your flight tickets at least 19 days before the departure date.
The airline offering the cheapest tickets is TAP Air Portugal. A ticket from the company TAP Air Portugal to London costs on average £214.
The airlines that offer the most flights are .
info departure city :
San Francisco, USA
airport :
San Francisco International Airport (SFO)
local time :
San Francisco is a city in the country USA, the time zone is [[timezone]]. In San Francisco, it is currently {fromLocalTime}, the temperature is on average 17°C, with a minimum of 13°C and a maximum of 20°C.
The city of San Francisco has 1 airport(s): San Francisco
destination info :
London, United Kingdom
airports :
London City Airport (LCY)
London Gatwick Airport (LGW)
London Heathrow Airport (LHR)
London Luton Airport (LTN)
London-Stansted Airport (STN)
local time :
London is in the country United Kingdom, the time zone is [[timezone]]. In London, it is currently {toLocalTime}, the temperature is on average 6°C, with a minimum of 4°C and a maximum of 7°C.
The city of London (LON) has 5 airport(s): London City, London Gatwick, London Heathrow, London Luton and London-Stansted
Useful info about London
What is the least touristic period to go to London?
If you want to visit London during the least touristic period, choose the month of October.
What is the most popular time to travel to London?
In London, the most touristic month is November. It is during this period that the prices offered by airlines are also the highest.
When should I book my flight San Francisco - London?
According to our data, it is recommended to book your flight 19 days before your departure. If you book your flight ticket 3 weeks before your departure, you may find a price below average. The cheapest day to book a flight San Francisco - London is Tuesday.
What are the arrival and destination airports when travelling between San Francisco and London?
When you leave, you can leave from San Francisco, and you will arrive at .
How to reach San Francisco airport from the city centre?
This information is not available at this time.
Are there other means of transport to go from San Francisco to London?
Flights are the only means of transport listed on Liligo for this journey.
Are there big differences in weather between San Francisco and London?
In summer, the average temperature is 18°C in London and 17°C in San Francisco. The average rainfall in summer is 63 mm in London and 2 mm in San Francisco.In summer, it is warmer in London and it rains less in San Francisco. In winter, it is colder in San Francisco and it rains more in San Francisco.
