£234 Find Cheap Flights from California to London

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to London departing on 18/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Flight Deals

Cheap Flights from California to London

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from California to London that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from California to London

Mon, 20 Apr - Tue, 5 May
Scandinavian Airlines Logo
16:45 - 16:00
SFO
-
LHR
15h 15m
1 stop
Scandinavian Airlines Logo
06:40 - 14:40
LHR
-
SFO
16h 00m
1 stop
£449Scandinavian Airlines
Tue, 5 May - Tue, 26 May
TAP AIR PORTUGAL Logo
16:45 - 22:55
LAX
-
LHR
22h 10m
1 stop
TAP AIR PORTUGAL Logo
06:00 - 14:45
LHR
-
LAX
16h 45m
1 stop
£450TAP AIR PORTUGAL
Mon, 31 Aug - Thu, 10 Sep
Norse Atlantic UK Logo
16:30 - 10:55
LAX
-
LGW
10h 25mdirect
Norse Atlantic UK Logo
10:20 - 13:35
LGW
-
LAX
11h 15mdirect
£451Norse Atlantic UK
Thu, 27 Aug - Thu, 17 Sep
Norse Atlantic UK Logo
16:30 - 10:55
LAX
-
LGW
10h 25mdirect
Norse Atlantic UK Logo
10:15 - 13:30
LGW
-
LAX
11h 15mdirect
£452Norse Atlantic UK
Mon, 20 Apr - Mon, 27 Apr
Multiple Airlines Logo
16:45 - 23:20
SFO
-
STN
22h 35m
2 stops
Multiple Airlines Logo
11:10 - 14:40
STN
-
SFO
35h 30m
3 stops
£452Multiple Airlines
Mon, 4 May - Wed, 6 May
Multiple Airlines Logo
06:35 - 16:50
LAX
-
STN
26h 15m
3 stops
Multiple Airlines Logo
08:15 - 17:10
STN
-
LAX
16h 55m
2 stops
£455Multiple Airlines
Fri, 24 Apr - Fri, 8 May
Air Canada Logo
11:55 - 09:35
SFO
-
LHR
13h 40m
1 stop
Air Canada Logo
15:05 - 23:06
LHR
-
SFO
16h 01m
1 stop
£455Air Canada
Tue, 1 Sep - Wed, 9 Sep
British Airways Logo
19:40 - 14:20
SAN
-
LHR
10h 40mdirect
British Airways Logo
08:55 - 15:41
LHR
-
SAN
14h 46m
1 stop
£512British Airways
Sun, 26 Apr - Tue, 12 May
Air Canada Logo
18:10 - 13:20
SAN
-
LHR
35h 10m
1 stop
Air Canada Logo
06:50 - 20:43
LHR
-
SAN
21h 53m
2 stops
£528Air Canada
Mon, 27 Apr - Wed, 6 May
British Airways Logo
10:59 - 08:05
ONT
-
LHR
13h 06m
1 stop
British Airways Logo
10:05 - 16:22
LHR
-
ONT
14h 17m
1 stop
£545British Airways
Useful Info

Good to know - Cheap tickets from California to London

Low seasonJanuary
Cheapest flight£234
Best time to beat the crowds (9% less expensive on average)
Most popular time to fly (14% more expensive on average)
Flight from Los Angeles to London Gatwick Airport

Flights from California to London: the best tips from KAYAK users

Insights shared by verified travellers who flew the route from California to London 
Learn how KAYAK collects reviews and tips from users.
Verified travelerFlew with British Airways
SFO
-
LHR
Dec 2025
If not getting off in London make sure you have enough time to get to your connecting gates
Verified travelerFlew with Iberia
SFO
-
LHR
Jan 2026
Buy your flight directly from the airline because the cancellation process is purgatory
GeraldFlew with Virgin Atlantic
SFO
-
LHR
Jun 2025
Virgin Atlantic uses terminal 3. Much faster clearing customs than terminal 5
Verified travelerFlew with American Airlines
SFO
-
LHR
Jun 2025
Large number of passengers on the flight so arrive early to the airport and to the boarding gate
ValerieFlew with British Airways
LAX
-
LHR
Apr 2025
It was difficult to tell if the checked luggage was included. London Heathrow is huge and if the second flight hasn't been delayed I would have missed it.
PallaviFlew with British Airways
SFO
-
LHR
Apr 2025
Eat at the lounge first so you are not stuck eating overcooked cheese ravioli
Verified travelerFlew with Iberia
LAX
-
LHR
Jan 2025
Make sure you arrive early. Sometimes, the traffic getting to LAX can be a total nightmare.
WeiFlew with British Airways
LAX
-
LHR
Sept 2024
Connection takes long, Make sure you plan enough time.
TapanFlew with British Airways
SFO
-
LHR
Oct 2024
Great baggage policy in BA.. The worst part was experience at London Heathrow airport. Security was slow, too many people. Almost lost connecting flight even with 2 hours layover.
Verified travelerFlew with British Airways
LAX
-
LHR
Mar 2024
Pack your own food if you have dietary restrictions and fly other airlines if possible
MichelleFlew with British Airways
LAX
-
LHR
May 2024
Make sure you separate your luggage tags from your tickets
ShaunaFlew with British Airways
LAX
-
LHR
Dec 2023
I would suggest calling the airline to make sure that their TV screens work on the back of the seats, and if they don’t work that the entertainment option would work on your cell phones.

FAQs for booking flights from California to London

  • How does KAYAK find such low prices on flights from California to London?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from California to London.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from California to London?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from California is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from California to London?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to London with an airline and back to California with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from California to London?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from California up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Milton Keynes
Eastbourne
Hounslow
Luton
Southend-on-Sea
Slough
Winchester
Croydon
Stansted
Folkestone
Chichester
Maidstone
Colchester
Chelmsford
Crawley
Richmond
Bedford
Hastings
Watford

Everything you need to know for your flight to London

Cabin class types available on flights to California

Cabin classes available on flights to London. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
First Class flights to Londonfrom £5,606
Business Class flights to Londonfrom £1,309
Premium Economy Class flights to Londonfrom £1,234
Economy class flights to Londonfrom £375