Price observed over the last 3 months for a round trip.
Compare all flight tickets and find cheap flights from London to San Francisco
The cheapest flights right now
London – San Francisco
Outbound – Nov 15, 2026
direct
11h 0m Return – Dec 1, 2026
direct
10h 15m $631
3 days ago
London – San Francisco
Outbound – Nov 16, 2026
direct
11h 0m Return – Dec 2, 2026
direct
10h 15m $630
2 days ago
London – San Francisco
Outbound – Nov 15, 2026
direct
11h 0m Return – Dec 1, 2026
direct
10h 15m $626
3 days ago
London – San Francisco
Outbound – Nov 16, 2026
direct
11h 0m Return – Dec 1, 2026
direct
10h 15m $624
2 days ago
* Prices are in USD per passenger, including taxes, for a round trip. Prices are based on searches carried out within the last 72 hours. Please note that availability and ticket prices are subject to change and should not be considered as the final price quoted.
Cheapest flight tickets
$454
Average price of a round trip
$546
Average flight ticket price recorded over the last 3 months for a round trip.
Flight duration
11h3
A flight from London to San Francisco takes on average 11h3.
Best time
November
According to user searches, the ideal month to go to San Francisco is November.
The best flight deals for a week
London – San Francisco
Outbound – Jan 7, 2027
1 stop
19h 25m ORD
Return – Jan 14, 2027
direct
10h 35m $705
yesterday
London – San Francisco
Outbound – Jan 7, 2027
1 stop
19h 25m ORD
Return – Jan 15, 2027
direct
10h 35m $764
yesterday
* Prices are in USD per passenger, including taxes, for a round trip. Prices are based on searches carried out within the last 72 hours. Please note that availability and ticket prices are subject to change and should not be considered as the final price quoted.
Tips for finding a cheap flight from London to San Francisco
Check out our tips for booking your flight to San Francisco (USA) from London (United Kingdom) at the cheapest possible price.
Usually, the cheapest month to pick up a ticket on this route is October, with an average flight ticket price of $427 (calculation over the last two years). The most touristic season corresponds to the months of October, September and November.
For the cheapest flights, it is advisable to buy your ticket at least 54 days before the departure date.
The airline offering the cheapest flight tickets is Ryanair. A ticket from the airline Ryanair to San Francisco costs on average $763.
The airlines that offer the most flights are Finnair, British Airways and Iberia.
info departure city :
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 a city in the country United Kingdom, the time zone is [[timezone]]. In London, it is currently {fromLocalTime}, the temperature is on average 14°C, with a minimum of 11°C and a maximum of 16°C.
The city of London (LON) has 5 airport(s): London City, London Gatwick, London Heathrow, London Luton and London-Stansted
destination info :
San Francisco, USA
airport :
San Francisco International Airport (SFO)
local time :
San Francisco is in the country USA, the time zone is [[timezone]]. In San Francisco, it is currently {toLocalTime}, the temperature is on average 18°C, with a minimum of 16°C and a maximum of 24°C.
The city of San Francisco has 1 airport(s): San Francisco
Useful info about San Francisco
What is the least touristic period to go to San Francisco?
If you want to visit San Francisco during the least touristic period, choose the month of November.
What is the most popular time to travel to San Francisco?
In San Francisco, the most popular month is October. It is during this period that the prices offered by airlines are also the highest.
When should I book my flight from London to San Francisco?
According to our data, it is recommended to book your flight 54 days before your departure. If you book your flight ticket 8 weeks before your departure, you may find a price below average. You can also choose morning flights that are 27% cheaper than afternoon and evening flights. The cheapest day to book a flight from London to San Francisco is Thursday.
What are the arrival and destination airports when traveling between London and San Francisco?
When you leave, you can leave from London City, London Gatwick, London Heathrow, London Luton or London-Stansted, and you will arrive at San Francisco or San Jose-Norman Y. Mineta.
How to reach London airport from the city centre?
The airport London City is located 16 km, London Gatwick is located 38 km, London Heathrow is located 35 km, London Luton is located 45 km or London-Stansted is located 49 km from the city centre. You can access it by using public transportation, taking a taxi, or renting a car.
Are there other means of transportation to go from London to San Francisco?
Airplane is the only means of transportation listed on Liligo for this journey.
Are there big differences in weather between London and San Francisco?
In summer, the average temperature is 17°C in San Francisco and 18°C in London. The average rainfall in summer is 2 mm in San Francisco and 63 mm in London. 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.
