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.

£205 CHEAP FLIGHTS from California to London

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Cheap Flights from California to London

Discover the best prices for you by selecting your travel dates on KAYAK.

Return

One-way

Last minute

Direct

Recent return flight deals from California to London

Sun, 4 Oct - Wed, 21 Oct

18:00 - 15:35ONT Ontario-LHR London Heathrow

13h 35m1 stop Seattle/Tacoma Intl

11:40 - 22:43LHR London Heathrow-ONT Ontario

19h 03m1 stop Seattle/Tacoma Intl

£551Delta

Sun, 4 Oct - Wed, 21 Oct

18:00 - 15:35ONT Ontario-LHR London Heathrow

13h 35m1 stop Seattle/Tacoma Intl

08:20 - 20:25LHR London Heathrow-ONT Ontario

20h 05m2 stops New York John F Kennedy Intl Atlanta Hartsfield-Jackson

£554Delta

Mon, 5 Oct - Tue, 13 Oct

14:13 - 15:05ONT Ontario-LHR London Heathrow

16h 52m1 stop Seattle/Tacoma Intl

17:00 - 10:17LHR London Heathrow-ONT Ontario

25h 17m1 stop Seattle/Tacoma Intl

£557Alaska Airlines

Sun, 20 Sep - Tue, 6 Oct

18:00 - 15:35ONT Ontario-LHR London Heathrow

13h 35m1 stop Seattle/Tacoma Intl

11:40 - 22:43LHR London Heathrow-ONT Ontario

19h 03m1 stop Seattle/Tacoma Intl

£567Virgin Atlantic

Tue, 6 Oct - Tue, 13 Oct

16:45 - 22:00LAX Los Angeles Los Angeles-LHR London Heathrow

21h 15m1 stop Lisbon Humberto Delgado

06:00 - 14:45LHR London Heathrow-LAX Los Angeles Los Angeles

16h 45m1 stop Lisbon Humberto Delgado

£573TAP AIR PORTUGAL

Sun, 11 Oct - Mon, 26 Oct

16:40 - 22:55LAX Los Angeles Los Angeles-LHR London Heathrow

22h 15m1 stop Lisbon Humberto Delgado

18:30 - 16:15LHR London Heathrow-LAX Los Angeles Los Angeles

28h 45m1 stop Lisbon Humberto Delgado

£573TAP AIR PORTUGAL

Fri, 13 Nov - Sun, 15 Nov

11:40 - 09:30LAX Los Angeles Los Angeles-LHR London Heathrow

13h 50m1 stop New York John F Kennedy Intl

15:10 - 18:35LHR London Heathrow-LAX Los Angeles Los Angeles

11h 25mdirect

£573Multiple Airlines

Wed, 13 Jan - Sat, 23 Jan

17:30 - 12:10LAX Los Angeles Los Angeles-LHR London Heathrow

10h 40mdirect

19:40 - 16:40LHR London Heathrow-LAX Los Angeles Los Angeles

29h 00m1 stop Madrid Barajas

£573Iberia

Sun, 17 Jan - Sat, 23 Jan

18:25 - 13:05LAX Los Angeles Los Angeles-LHR London Heathrow

10h 40mdirect

19:40 - 16:40LHR London Heathrow-LAX Los Angeles Los Angeles

29h 00m1 stop Madrid Barajas

£574Iberia

Tue, 27 Oct - Tue, 10 Nov

14:50 - 19:35LAX Los Angeles Los Angeles-LCY London City

21h 45m1 stop Amsterdam Schiphol

20:05 - 11:45LCY London City-LAX Los Angeles Los Angeles

23h 40m1 stop Amsterdam Schiphol

£595Virgin Atlantic

Recent last minute flight deals from California to London

Tue, 15 Sep - Thu, 17 Sep

10:20 - 21:35LAX Los Angeles Los Angeles-LGW London Gatwick

27h 15m2 stops Casablanca Mohamed V Geneva Geneve-Cointrin

06:30 - 08:20LGW London Gatwick-LAX Los Angeles Los Angeles

33h 50m2 stops Geneva Geneve-Cointrin Casablanca Mohamed V

£586Multiple Airlines

Thu, 10 Sep - Wed, 16 Sep

11:15 - 09:30LAX Los Angeles Los Angeles-LHR London Heathrow

14h 15m1 stop New York John F Kennedy Intl

11:55 - 00:52LHR London Heathrow-LAX Los Angeles Los Angeles

20h 57m1 stop New York John F Kennedy Intl

£596JetBlue

Tue, 15 Sep - Tue, 22 Sep

19:30 - 13:55SFO San Francisco-LHR London Heathrow

10h 25mdirect

14:30 - 17:40LHR London Heathrow-SFO San Francisco

11h 10mdirect

£631British Airways

Tue, 15 Sep - Sun, 20 Sep

19:20 - 20:30SFO San Francisco-LGW London Gatwick

41h 10m2 stops Lajes Porto

21:15 - 13:35LGW London Gatwick-SFO San Francisco

48h 20m2 stops Porto Lisbon Humberto Delgado

£631TAP AIR PORTUGAL

Tue, 15 Sep - Sun, 20 Sep

16:35 - 11:00SFO San Francisco-LHR London Heathrow

10h 25mdirect

10:45 - 13:50LHR London Heathrow-SFO San Francisco

11h 05mdirect

£637British Airways

Tue, 15 Sep - Sun, 20 Sep

19:20 - 20:30SFO San Francisco-LGW London Gatwick

41h 10m3 stops Lajes Lisbon Humberto Delgado Porto

21:15 - 13:35LGW London Gatwick-SFO San Francisco

48h 20m2 stops Porto Lisbon Humberto Delgado

£641TAP AIR PORTUGAL

Sun, 13 Sep - Mon, 28 Sep

17:30 - 17:05LAX Los Angeles Los Angeles-LHR London Heathrow

15h 35m1 stop Munich Franz Josef Strauss

07:25 - 15:15LHR London Heathrow-LAX Los Angeles Los Angeles

15h 50m1 stop Munich Franz Josef Strauss

£667Lufthansa

Mon, 14 Sep - Sat, 26 Sep

17:30 - 17:05LAX Los Angeles Los Angeles-LHR London Heathrow

15h 35m1 stop Munich Franz Josef Strauss

06:30 - 13:10LHR London Heathrow-LAX Los Angeles Los Angeles

14h 40m1 stop Frankfurt am Main

£678Lufthansa

Tue, 15 Sep - Tue, 22 Sep

14:22 - 12:50ONT Ontario-LHR London Heathrow

14h 28m1 stop Dallas/Fort Worth

08:55 - 20:09LHR London Heathrow-ONT Ontario

19h 14m1 stop Dallas/Fort Worth

£722Iberia

Mon, 14 Sep - Mon, 21 Sep

18:25 - 16:35LAX Los Angeles Los Angeles-LHR London Heathrow

14h 10m1 stop Paris Charles de Gaulle

20:55 - 11:50LHR London Heathrow-LAX Los Angeles Los Angeles

22h 55m1 stop Amsterdam Schiphol

£738Virgin Atlantic

Recent direct flight deals from California to London

Sun, 17 Jan - Fri, 22 Jan

17:30 - 12:10LAX Los Angeles Los Angeles-LHR London Heathrow

10h 40mdirect

16:55 - 20:15LHR London Heathrow-LAX Los Angeles Los Angeles

11h 20mdirect

£579British Airways

Mon, 1 Mar - Fri, 19 Mar

20:50 - 15:25LAX Los Angeles Los Angeles-LHR London Heathrow

10h 35mdirect

11:50 - 16:20LHR London Heathrow-LAX Los Angeles Los Angeles

11h 30mdirect

£579British Airways

Wed, 13 Jan - Sat, 23 Jan

15:30 - 10:00LAX Los Angeles Los Angeles-LHR London Heathrow

10h 30mdirect

16:55 - 20:15LHR London Heathrow-LAX Los Angeles Los Angeles

11h 20mdirect

£579Iberia

Mon, 1 Mar - Wed, 10 Mar

20:50 - 15:25LAX Los Angeles Los Angeles-LHR London Heathrow

10h 35mdirect

11:50 - 15:20LHR London Heathrow-LAX Los Angeles Los Angeles

11h 30mdirect

£579Multiple Airlines

Wed, 13 Jan - Sun, 24 Jan

17:30 - 12:10LAX Los Angeles Los Angeles-LHR London Heathrow

10h 40mdirect

11:50 - 15:20LHR London Heathrow-LAX Los Angeles Los Angeles

11h 30mdirect

£579Multiple Airlines

Sun, 1 Nov - Wed, 11 Nov

17:00 - 11:40LAX Los Angeles Los Angeles-LHR London Heathrow

10h 40mdirect

11:55 - 15:10LHR London Heathrow-LAX Los Angeles Los Angeles

11h 15mdirect

£588American Airlines

Sun, 1 Nov - Tue, 17 Nov

17:00 - 11:40LAX Los Angeles Los Angeles-LHR London Heathrow

10h 40mdirect

12:30 - 15:50LHR London Heathrow-LAX Los Angeles Los Angeles

11h 20mdirect

£588American Airlines

Tue, 5 Jan - Tue, 12 Jan

17:30 - 12:10LAX Los Angeles Los Angeles-LHR London Heathrow

10h 40mdirect

12:30 - 15:50LHR London Heathrow-LAX Los Angeles Los Angeles

11h 20mdirect

£592Finnair

Thu, 10 Dec - Mon, 14 Dec

17:30 - 12:10LAX Los Angeles Los Angeles-LHR London Heathrow

10h 40mdirect

11:50 - 15:20LHR London Heathrow-LAX Los Angeles Los Angeles

11h 30mdirect

£595Iberia

Thu, 26 Nov - Wed, 2 Dec

16:55 - 11:40LAX Los Angeles Los Angeles-LHR London Heathrow

10h 45mdirect

12:30 - 15:50LHR London Heathrow-LAX Los Angeles Los Angeles

11h 20mdirect

£599Finnair

Useful Info

Low season	January
High season	June
Cheapest flight	£205

Best time to beat the crowds (23% less expensive on average)

Most popular time to fly (36% more expensive on average)

Flight from San Diego to London Heathrow Airport

Verified travelerFlew with British Airways-Dec 2025

If not getting off in London make sure you have enough time to get to your connecting gates

Verified travelerFlew with Iberia-Jan 2026

Buy your flight directly from the airline because the cancellation process is purgatory

GeraldFlew with Virgin Atlantic-Jun 2025

Virgin Atlantic uses terminal 3. Much faster clearing customs than terminal 5

Verified travelerFlew with American Airlines-Jun 2025

Large number of passengers on the flight so arrive early to the airport and to the boarding gate

ValerieFlew with British Airways-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-Apr 2025

Eat at the lounge first so you are not stuck eating overcooked cheese ravioli

Verified travelerFlew with Iberia-Jan 2025

Make sure you arrive early. Sometimes, the traffic getting to LAX can be a total nightmare.

WeiFlew with British Airways-Sept 2024

Connection takes long, Make sure you plan enough time.

TapanFlew with British Airways-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-Mar 2024

Pack your own food if you have dietary restrictions and fly other airlines if possible

MichelleFlew with British Airways-May 2024

Make sure you separate your luggage tags from your tickets

ShaunaFlew with British Airways-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.

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.

Gatwick

Eastbourne

Milton Keynes

Hounslow

Luton

Southend-on-Sea

Newport

Folkestone

Winchester

Slough

Croydon

Stansted

Colchester

Chichester

Crawley

Maidstone

Chelmsford

Hastings

Bedford

Richmond

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£205 Find Cheap Flights from California to London – Compare and Save

Cheap Flights from California to London

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Recent last minute flight deals from California to London

Recent direct flight deals from California to London

Good to know - Cheap tickets from California to London

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

FAQs for booking flights from California to London

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More options for your flight to London

Complete your trip to London with a hotel stay or car hire

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