Fly from
Route
Depart
Return
LondonSan Francisco
LHR - SFO
LHRSFO
London Heathrow
Fri 15/5
08:40-16:15
1 stop15h 35m
San Francisco
Fri 22/5
06:00-10:10
1 stop20h 10m
LondonSan Francisco
LHR - SFO
LHRSFO
London Heathrow
Fri 25/9
09:50-15:50
1 stop14h 00m
San Francisco
Fri 2/10
13:29-11:05
1 stop13h 36m
LondonSan Francisco
LHR - SFO
LHRSFO
London Heathrow
Tue 8/9
06:30-11:45
1 stop13h 15m
San Francisco
Sun 20/9
22:45-20:10
1 stop13h 25m
LondonSan Francisco
LHR - SFO
LHRSFO
London Heathrow
Fri 16/10
12:25-20:22
1 stop15h 57m
San Francisco
Wed 4/11
13:35-10:00
1 stop12h 25m
LondonSan Francisco
LGW - SFO
LGWSFO
London Gatwick
Fri 8/5
10:25-23:50
2 stops21h 25m
San Francisco
Mon 11/5
15:05-16:00
1 stop16h 55m
LondonSan Francisco
LCY - SFO
LCYSFO
London City
Wed 9/9
10:00-22:52
2 stops20h 52m
San Francisco
Sun 20/9
13:45-19:45
1 stop22h 00m
LondonSan Francisco
LCY - SFO
LCYSFO
London City
Thu 25/6
17:50-11:45
1 stop25h 55m
San Francisco
Sun 16/8
06:00-07:15
2 stops17h 15m
LondonSan Francisco
LHR - SFO
LHRSFO
London Heathrow
Sat 5/9
15:35-14:40
2 stops31h 05m
San Francisco
Sat 12/9
16:45-16:25
2 stops15h 40m
LondonSan Francisco
LCY - SFO
LCYSFO
London City
Fri 8/5
19:00-11:45
1 stop24h 45m
San Francisco
Mon 11/5
05:50-07:55
2 stops18h 05m
LondonSan Francisco
LCY - SFO
LCYSFO
London City
Thu 25/6
08:25-21:50
2 stops21h 25m
San Francisco
Thu 16/7
13:45-18:30
1 stop20h 45m
Booking 59 days in advance of your planned departure date is, on average, the best time to get cheap flights to San Francisco. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
On average, a flight from London to San Francisco takes 15 hours 18 minutes. Flights to San Francisco from other popular cities in United Kingdom will vary in length. Below are a few examples of popular routes and their flight times.
The most flights from London to San Francisco are scheduled on a Monday (42 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (25 on average).
The most popular airlines flying from London to San Francisco are Virgin Atlantic, British Airways and Lufthansa.
The cheapest airlines flying from London to San Francisco are Delta, Air Canada and British Airways.
In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 112.0 inches per month. January is typically the wettest month, when rainfall can reach 112.0 mm. July is typically the driest time to visit San Francisco when rainfall is around 0.0 mm.
If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).
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Entertainment
Food
Overall
Boarding
Reviews
KENNETH,Mar 2026
VIE - EWR
Crew
Comfort
Entertainment
Food
Overall
Boarding
Reviews
KENNETH,Mar 2026
VIE - EWR
Crew
Comfort
Entertainment
Food
Overall
Boarding
Reviews
KENNETH,Mar 2026
VIE - EWR
Crew
Comfort
Entertainment
Food
Overall
Boarding
Reviews
KENNETH,Mar 2026
VIE - EWR
Crew
Comfort
Entertainment
Food
Overall
Boarding
Reviews
KENNETH,Mar 2026
VIE - EWR
Crew
Comfort
Entertainment
Food
Overall
Boarding
Reviews
KENNETH,Mar 2026
VIE - EWR
San Francisco International Airport is located 21km (13 miles) south of downtown San Francisco and is the largest airport in the Bay Area and the second-busiest airport in California.
Comprising four terminals – Terminals 1, 2, 3 and the International Terminal – that form a ring around a multi-storey Domestic Parking garage, San Francisco International is easy to navigate. Terminals 1-3 handle all domestic flights, while the International Terminal mainly manages international flights. Customs, immigrations and baggage claims are generally fast; staff are friendly, signage is good and transport to and from the airport is excellent. Delays are common, though, due to the region’s adverse weather patterns; however, there are plans to extend the runways in order to aid aircraft flying in low visibility conditions.
San Francisco International is clean and modern. With its newly revamped Terminal 2 housing an award-winning aviation museum and library, along with an extensive array of retail, dining, entertainment and health establishments, it is truly a world-class facility.
Flights to San Francisco International Airport comes from a number of destinations worldwide, including Toronto, Paris, Tokyo, London, Hong Kong, Seoul, Lima, Frankfurt, Singapore, San Salvador, Beijing, Mexico City, Sydney and Cancun, in addition to numerous domestic routes.
When you search for this flight to San Francisco, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the best flight for you.
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