Fly from
Fly to
Route
Depart
Return
San FranciscoLondon
SFO - LHR
SFOLHR
San Francisco
Fri 18/9
06:00-13:35
2 stops23h 35m
London Heathrow
Wed 30/9
19:50-14:40
2 stops26h 50m
San FranciscoLondon
SFO - LHR
SFOLHR
San Francisco
Mon 17/8
14:36-17:40
2 stops19h 04m
London Heathrow
Thu 27/8
19:50-14:40
2 stops26h 50m
Los AngelesLondon
LAX - STN
LAXSTN
Los Angeles
Wed 7/10
20:10-09:55
1 stop29h 45m
London Stansted
Tue 13/10
17:35-11:40
1 stop26h 05m
Los AngelesLondon
LAX - STN
LAXSTN
Los Angeles
Wed 16/9
20:10-22:10
1 stop18h 00m
London Stansted
Wed 23/9
10:50-11:40
1 stop32h 50m
Los AngelesLondon
LAX - STN
LAXSTN
Los Angeles
Sun 27/9
13:25-22:10
1 stop24h 45m
London Stansted
Tue 6/10
06:55-11:40
1 stop36h 45m
San FranciscoLondon
SFO - LHR
SFOLHR
San Francisco
Fri 16/10
23:50-09:35
2 stops25h 45m
London Heathrow
Fri 23/10
06:40-14:40
1 stop16h 00m
Los AngelesLondon
LAX - LGW
LAXLGW
Los Angeles
Thu 3/12
12:45-09:10
1 stop36h 25m
London Gatwick
Thu 10/12
10:05-16:35
1 stop38h 30m
San FranciscoLondon
SFO - LGW
SFOLGW
San Francisco
Wed 2/9
16:35-20:30
2 stops19h 55m
London Gatwick
Tue 8/9
16:25-14:35
1 stop30h 10m
San FranciscoLondon
SFO - LHR
SFOLHR
San Francisco
Mon 7/12
16:40-11:15
Nonstop10h 35m
London Heathrow
Thu 10/12
10:05-13:20
Nonstop11h 15m
San FranciscoLondon
SFO - LGW
SFOLGW
San Francisco
Wed 18/11
16:35-09:50
1 stop33h 15m
London Gatwick
Sat 28/11
10:10-14:45
2 stops60h 35m
Currently, February is the cheapest month in which you can book a flight from California to London (average of £490). Flying from California to London in June is currently the most expensive (average of £980). 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 15% on the flight price compared to flying in the evening, which is usually more expensive.
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 (33 on average).
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.
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.
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.