Fly from
Fly to
Route
Depart
Return
San FranciscoLondon
SFO - STN
SFOSTN
San Francisco
Wed 7/10
18:45-22:10
1 stop19h 25m
London Stansted
Wed 28/10
10:50-12:05
1 stop32h 15m
San FranciscoLondon
SFO - LHR
SFOLHR
San Francisco
Sun 6/9
17:55-12:15
Nonstop10h 20m
London Heathrow
Tue 22/9
06:30-11:45
1 stop13h 15m
San FranciscoLondon
SFO - LHR
SFOLHR
San Francisco
Wed 19/8
17:55-12:15
Nonstop10h 20m
London Heathrow
Wed 2/9
06:30-11:45
1 stop13h 15m
San FranciscoLondon
SFO - LHR
SFOLHR
San Francisco
Sun 19/7
23:15-17:30
Nonstop10h 15m
London Heathrow
Thu 20/8
06:30-11:45
1 stop13h 15m
San FranciscoLondon
SFO - LHR
SFOLHR
San Francisco
Mon 7/9
17:55-12:15
Nonstop10h 20m
London Heathrow
Tue 29/9
06:30-11:45
1 stop13h 15m
San FranciscoLondon
SFO - LHR
SFOLHR
San Francisco
Tue 15/9
23:15-17:30
Nonstop10h 15m
London Heathrow
Tue 22/9
06:30-11:45
1 stop13h 15m
San FranciscoLondon
SFO - LHR
SFOLHR
San Francisco
Sun 23/8
17:55-12:15
Nonstop10h 20m
London Heathrow
Tue 1/9
06:30-11:45
1 stop13h 15m
San FranciscoLondon
SFO - LGW
SFOLGW
San Francisco
Tue 15/9
20:10-09:25
1 stop29h 15m
London Gatwick
Thu 15/10
10:25-01:13
2 stops22h 48m
Los AngelesLondon
LAX - LHR
LAXLHR
Los Angeles Los Angeles
Mon 2/11
18:55-13:30
Nonstop10h 35m
London Heathrow
Wed 18/11
09:00-16:35
1 stop15h 35m
San FranciscoLondon
SFO - LCY
SFOLCY
San Francisco
Tue 22/9
07:00-09:30
2 stops18h 30m
London City
Tue 13/10
10:00-21:35
2 stops19h 35m
Booking 29 days in advance of your planned departure date is, on average, the best time to get cheap flights from California to London. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Currently, September is the cheapest month in which you can book a flight from California to London (average of £473). Flying from California to London in June is currently the most expensive (average of £740). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
It’s typically best to fly out from California to London in the afternoon. Doing so could potentially save you 13% on the flight price compared to flying at midday, which is usually more expensive.
Travellers seeking maximum savings on their California to London flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Monday at midday flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from USCA to LON are scheduled on a Monday (54 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (50 on average).
Deals for California to London flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.
Cheapflights helps you find that perfect flight to London from California by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!
Yes, we can. To see specific flights from California to London with no change fees, users can toggle flexible booking options after using the search form above to find flights.
Yes, Cheapflights offers price alerts on California to London flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.