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 best flight deals right now
London – San Francisco
Outbound – 7 Dec 2026
direct
11h 10m Return – 14 Dec 2026
direct
10h 35m £538
yesterday
London – San Francisco
Outbound – 7 Dec 2026
direct
11h 10m Return – 14 Dec 2026
direct
10h 35m £536
yesterday
London – San Francisco
Outbound – 7 Dec 2026
1 stop
16h 41m DFW
Return – 14 Dec 2026
1 stop
14h 58m LAX
£288
yesterday
London – San Francisco
Outbound – 3 Dec 2026
direct
11h 10m Return – 14 Dec 2026
direct
10h 35m £629
yesterday
* Prices are in GBP per passenger, including taxes, for a round trip. Prices are based on searches carried out within the last 72 hours. Please note that ticket availability and prices are subject to change and should not be considered as the final price quoted.
Today’s flight suggestion for London - San Francisco
Outbound 24 December 2026 · Inbound 6 January 2027
Today’s suggestion
06:00
LHR 16:30
SFO18h 30m
1 stop
19:25
SFO 17:50 +1
LHR14h 25m
1 stop
From £543
09:00
LHR 16:30
SFO15h 30m
1 stop
19:25
SFO 17:50 +1
LHR14h 25m
1 stop
From £543
15:20
LHR 07:32 +1
SFO24h 12m
1 stop
19:25
SFO 17:50 +1
LGW14h 25m
1 stop
From £544
Cheapest flight
£418
Average price of a round trip
£553
Average price recorded over the last 3 months for a round trip.
Flight duration
11h10
A flight from London to San Francisco takes on average 11h10.
Best time
April
According to user searches, the ideal month to go to San Francisco is April.
What is the cheapest month for this flight?
Monthly price data (Table View)
November
Nov
£429
December
Dec
£601
January
Jan
£581
February
Feb
£1,065
March
Mar
£389
April
Apr
£0
May
May
£432
June
Jun
£497
July
Jul
£0
August
Aug
£0
September
Sept
£438
October
Oct
£546
* The prices shown are an average per month of the prices found by Liligo users during the last 30 days.
The best flight deals for a week
London – San Francisco
Outbound – 7 Dec 2026
direct
11h 10m Return – 14 Dec 2026
direct
10h 35m £538
yesterday
London – San Francisco
Outbound – 7 Dec 2026
direct
11h 10m Return – 14 Dec 2026
direct
10h 35m £536
yesterday
London – San Francisco
Outbound – 7 Dec 2026
1 stop
16h 41m DFW
Return – 14 Dec 2026
1 stop
14h 58m LAX
£288
yesterday
* Prices are in GBP per passenger, including taxes, for a round trip. Prices are based on searches carried out within the last 72 hours. Please note that ticket availability and prices are subject to change and should not be considered as the final price quoted.
Tips for finding cheap flights 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 June, with an average ticket price of £333 (calculation over the last two years). The most touristic season corresponds to the months of December, September and June.
For an attractive price, it is advisable to buy your flight tickets at least 65 days before the departure date.
The airline offering the cheapest tickets is TAP Air Portugal. A ticket from the company TAP Air Portugal to San Francisco costs on average £431.
The airlines that offer the most flights are .
Price of flight tickets from London to San Francisco
Here is some information and tips to know before booking your flight:
- Flight ticket prices range from £418 to £808
- The average price of a flight ticket is about £553
- Prices are lowest for stays in the month of June
- The month in which booking a ticket is cheaper is: December
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 8°C, with a minimum of 5°C and a maximum of 11°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 17°C, with a minimum of 15°C and a maximum of 19°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 April.
What is the most popular time to travel to San Francisco?
In San Francisco, the most touristic month is December. It is during this period that the prices offered by airlines are also the highest.
When should I book my flight London - San Francisco?
According to our data, it is recommended to book your flight 65 days before your departure. If you book your flight 10 weeks before your departure, you may find a price below average. You can also choose morning flights that are 16% cheaper than afternoon and evening flights. The cheapest day to book a flight London - San Francisco is Monday.
What are the arrival and destination airports when travelling 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.
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 transport, taking a taxi, or renting a car..
Are there other means of transport to go from London to San Francisco?
Flights are the only means of transport 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.
