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

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 Heathrow Airport.

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

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

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

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 Heathrow Airport 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 Heathrow Airport?

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 Heathrow Airport from California up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

£211 CHEAP FLIGHTS from California to London Heathrow (LHR)

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Cheap Flights from California to Heathrow

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 Heathrow

Wed, 18 Nov - Thu, 26 Nov

19:30 - 21:40LAX Los Angeles-LHR London Heathrow

18h 10m1 stop Kastrup Copenhagen

10:20 - 17:00LHR London Heathrow-LAX Los Angeles

14h 40m1 stop Kastrup Copenhagen

£451Scandinavian Airlines

Mon, 11 Jan - Mon, 18 Jan

19:30 - 21:40LAX Los Angeles-LHR London Heathrow

18h 10m1 stop Kastrup Copenhagen

10:20 - 17:00LHR London Heathrow-LAX Los Angeles

14h 40m1 stop Kastrup Copenhagen

£464Scandinavian Airlines

Sun, 4 Oct - Tue, 2 Mar

17:05 - 11:35LAX Los Angeles-LHR London Heathrow

10h 30mdirect

10:05 - 13:25LHR London Heathrow-LAX Los Angeles

11h 20mdirect

£474British Airways

Mon, 21 Sep - Tue, 6 Oct

16:30 - 18:50SFO San Francisco-LHR London Heathrow

18h 20m1 stop Lisbon Humberto Delgado

19:50 - 14:35LHR London Heathrow-SFO San Francisco

26h 45m1 stop Lisbon Humberto Delgado

£477TAP AIR PORTUGAL

Mon, 21 Sep - Tue, 29 Sep

16:30 - 22:55SFO San Francisco-LHR London Heathrow

22h 25m1 stop Lisbon Humberto Delgado

13:45 - 14:35LHR London Heathrow-SFO San Francisco

32h 50m1 stop Lisbon Humberto Delgado

£478TAP AIR PORTUGAL

Wed, 18 Nov - Thu, 26 Nov

18:00 - 12:30LAX Los Angeles-LHR London Heathrow

10h 30mdirect

10:05 - 13:25LHR London Heathrow-LAX Los Angeles

11h 20mdirect

£489British Airways

Wed, 18 Nov - Wed, 25 Nov

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

10h 40mdirect

07:35 - 16:40LHR London Heathrow-LAX Los Angeles

17h 05m1 stop Madrid Barajas

£571Iberia

Tue, 17 Nov - Wed, 9 Dec

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

10h 30mdirect

07:35 - 16:40LHR London Heathrow-LAX Los Angeles

17h 05m1 stop Madrid Barajas

£571Iberia

Tue, 3 Nov - Thu, 5 Nov

14:45 - 12:50SFO San Francisco-LHR London Heathrow

14h 05m1 stop Frankfurt am Main

11:10 - 19:35LHR London Heathrow-SFO San Francisco

16h 25m1 stop Munich Franz Josef Strauss

£584Lufthansa

Wed, 11 Nov - Fri, 13 Nov

11:27 - 12:50LAS Las Vegas Harry Reid Intl-LHR London Heathrow

17h 23m2 stops San Francisco Frankfurt am Main

06:30 - 20:05LHR London Heathrow-LAS Las Vegas Harry Reid Intl

21h 35m2 stops Frankfurt am Main Los Angeles

£590Lufthansa

Recent last minute flight deals from California to Heathrow

Wed, 12 Aug - Wed, 9 Sep

16:35 - 18:50SFO San Francisco-LHR London Heathrow

18h 15m1 stop Lisbon Humberto Delgado

18:45 - 14:30LHR London Heathrow-SFO San Francisco

27h 45m1 stop Lisbon Humberto Delgado

£575TAP AIR PORTUGAL

Wed, 12 Aug - Wed, 9 Sep

16:35 - 22:55SFO San Francisco-LHR London Heathrow

22h 20m1 stop Lisbon Humberto Delgado

19:50 - 14:30LHR London Heathrow-SFO San Francisco

26h 40m1 stop Lisbon Humberto Delgado

£575TAP AIR PORTUGAL

Wed, 12 Aug - Wed, 26 Aug

16:20 - 20:45LAX Los Angeles-LHR London Heathrow

20h 25m1 stop New York John F Kennedy Intl

08:15 - 18:19LHR London Heathrow-LAX Los Angeles

18h 04m1 stop New York John F Kennedy Intl

£636JetBlue

Wed, 12 Aug - Tue, 15 Sep

11:35 - 09:30LAS Las Vegas Harry Reid Intl-LHR London Heathrow

13h 55m1 stop New York John F Kennedy Intl

08:15 - 18:37LHR London Heathrow-LAS Las Vegas Harry Reid Intl

18h 22m1 stop New York John F Kennedy Intl

£656JetBlue

Fri, 14 Aug - Thu, 10 Sep

17:05 - 11:35LAX Los Angeles-LHR London Heathrow

10h 30mdirect

11:40 - 15:00LHR London Heathrow-LAX Los Angeles

11h 20mdirect

£693British Airways

Wed, 12 Aug - Tue, 18 Aug

10:05 - 07:20LAX Los Angeles-LHR London Heathrow

13h 15m1 stop New York John F Kennedy Intl

10:30 - 13:50LHR London Heathrow-LAX Los Angeles

11h 20mdirect

£727British Airways

Wed, 12 Aug - Wed, 19 Aug

13:07 - 10:00LAX Los Angeles-LHR London Heathrow

12h 53m1 stop Salt Lake City

08:40 - 14:45LHR London Heathrow-LAX Los Angeles

14h 05m1 stop Amsterdam Schiphol

£744Virgin Atlantic

Wed, 12 Aug - Wed, 19 Aug

15:50 - 10:15LAX Los Angeles-LHR London Heathrow

10h 25mdirect

06:30 - 11:50LHR London Heathrow-LAX Los Angeles

13h 20m1 stop Amsterdam Schiphol

£744Virgin Atlantic

Tue, 11 Aug - Thu, 20 Aug

18:05 - 12:45LAX Los Angeles-LHR London Heathrow

10h 40mdirect

10:20 - 17:10LHR London Heathrow-LAX Los Angeles

14h 50m1 stop Helsinki-Vantaa

£745Finnair

Wed, 12 Aug - Wed, 19 Aug

16:30 - 11:05LAX Los Angeles-LHR London Heathrow

10h 35mdirect

08:20 - 11:45LHR London Heathrow-LAX Los Angeles

11h 25mdirect

£768Finnair

Useful Info

Low season	January
High season	December
Cheapest flight	£211

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

Most popular time to fly (8% more expensive on average)

Flight from Ontario 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 Heathrow Airport?
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 Heathrow Airport.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from California to London Heathrow Airport?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport from California is likely to change within 7 days, so travellers know whether to wait or book now.
What is the Hacker Fare option on flights from California to London Heathrow Airport?
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 Heathrow Airport 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 Heathrow Airport?
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 Heathrow Airport from California up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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Luton

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London Heathrow Airport (LHR)

£211 Find Cheap Flights from California to London Heathrow Airport – Compare and Save

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