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 travelers 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 round-trip 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.

$304 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.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from California to Heathrow

Mon, Oct 12 - Thu, Oct 15

7:10 pm - 9:35 amLAX Los Angeles-LHR London Heathrow

30h 25m2 stops Kastrup Copenhagen Oslo Gardermoen

6:40 am - 4:50 pmLHR London Heathrow-LAX Los Angeles

42h 10m2 stops Stockholm Arlanda Kastrup Copenhagen

$746Scandinavian Airlines

Sun, Nov 29 - Sun, Dec 6

12:30 pm - 11:50 amLAX Los Angeles-LHR London Heathrow

15h 20m1 stop Vancouver Intl

7:50 am - 6:40 pmLHR London Heathrow-LAX Los Angeles

18h 50m1 stop Dublin

$746Multiple Airlines

Wed, Oct 7 - Wed, Oct 14

4:45 pm - 8:05 pmLAX Los Angeles-LHR London Heathrow

19h 20m2 stops Frankfurt am Main Barcelona-El Prat

8:50 pm - 2:45 pmLHR London Heathrow-LAX Los Angeles

25h 55m2 stops Barcelona-El Prat Frankfurt am Main

$747Multiple Airlines

Mon, Nov 30 - Sun, Dec 6

8:25 pm - 7:50 pmLAX Los Angeles-LHR London Heathrow

15h 25m1 stop Dublin

7:50 am - 6:40 pmLHR London Heathrow-LAX Los Angeles

18h 50m1 stop Dublin

$748Aer Lingus

Tue, Dec 1 - Thu, Dec 3

5:30 pm - 3:50 pmLAX Los Angeles-LHR London Heathrow

14h 20m1 stop Munich Franz Josef Strauss

6:35 am - 10:59 pmLHR London Heathrow-LAX Los Angeles

24h 24m2 stops Munich Franz Josef Strauss San Francisco

$749Lufthansa

Wed, Dec 2 - Fri, Dec 4

5:30 pm - 3:50 pmLAX Los Angeles-LHR London Heathrow

14h 20m1 stop Munich Franz Josef Strauss

7:40 am - 10:59 pmLHR London Heathrow-LAX Los Angeles

23h 19m2 stops Munich Franz Josef Strauss San Francisco

$749Lufthansa

Tue, Feb 23 - Thu, Feb 25

11:30 am - 4:20 pmLAX Los Angeles-LHR London Heathrow

20h 50m2 stops Newark Zurich

9:00 am - 4:35 pmLHR London Heathrow-LAX Los Angeles

15h 35m1 stop Zurich

$751SWISS

Sat, Oct 3 - Tue, Oct 6

7:10 pm - 4:00 pmLAX Los Angeles-LHR London Heathrow

36h 50m1 stop Kastrup Copenhagen

6:40 am - 6:17 pmLHR London Heathrow-LAX Los Angeles

19h 37m2 stops Kastrup Copenhagen San Francisco

$752Scandinavian Airlines

Tue, Dec 8 - Thu, Dec 10

7:10 pm - 7:15 pmLAX Los Angeles-LHR London Heathrow

16h 05m1 stop Zurich

2:25 pm - 4:35 pmLHR London Heathrow-LAX Los Angeles

34h 10m2 stops Geneva Geneve-Cointrin Zurich

$770SWISS

Fri, Nov 27 - Sun, Dec 6

8:25 pm - 5:50 pmLAX Los Angeles-LHR London Heathrow

13h 25m1 stop Dublin

7:50 am - 6:40 pmLHR London Heathrow-LAX Los Angeles

18h 50m1 stop Dublin

$791Aer Lingus

Recent last minute flight deals from California to Heathrow

Fri, Sep 4 - Fri, Dec 11

8:35 pm - 8:45 pmLAX Los Angeles-LHR London Heathrow

16h 10m1 stop New York John F Kennedy Intl

4:55 pm - 8:15 pmLHR London Heathrow-LAX Los Angeles

11h 20mnonstop

$926Multiple Airlines

Fri, Sep 4 - Fri, Dec 11

8:35 pm - 8:45 pmLAX Los Angeles-LHR London Heathrow

16h 10m1 stop New York John F Kennedy Intl

4:40 pm - 12:56 amLHR London Heathrow-LAX Los Angeles

16h 16m1 stop New York John F Kennedy Intl

$927Multiple Airlines

Sat, Sep 5 - Sat, Sep 19

10:25 pm - 8:45 pmLAX Los Angeles-LHR London Heathrow

14h 20m1 stop New York John F Kennedy Intl

11:55 am - 12:52 amLHR London Heathrow-LAX Los Angeles

20h 57m1 stop New York John F Kennedy Intl

$928JetBlue

Sat, Sep 5 - Fri, Sep 11

10:25 pm - 8:45 pmLAX Los Angeles-LHR London Heathrow

14h 20m1 stop New York John F Kennedy Intl

11:55 am - 12:52 amLHR London Heathrow-LAX Los Angeles

20h 57m1 stop New York John F Kennedy Intl

$948JetBlue

Fri, Sep 4 - Mon, Sep 14

10:20 am - 5:45 pmLAX Los Angeles-LHR London Heathrow

23h 25m1 stop Casablanca Mohamed V

6:10 pm - 8:20 amLHR London Heathrow-LAX Los Angeles

22h 10m1 stop Casablanca Mohamed V

$972Royal Air Maroc

Tue, Sep 1 - Tue, Sep 29

7:35 pm - 5:50 pmLAX Los Angeles-LHR London Heathrow

14h 15m1 stop Zurich

8:45 am - 4:30 pmLHR London Heathrow-LAX Los Angeles

15h 45m1 stop Zurich

$975SWISS

Tue, Sep 1 - Thu, Sep 10

7:35 pm - 9:45 pmLAX Los Angeles-LHR London Heathrow

18h 10m1 stop Zurich

8:45 am - 4:30 pmLHR London Heathrow-LAX Los Angeles

15h 45m1 stop Zurich

$975SWISS

Thu, Sep 3 - Wed, Nov 25

8:10 pm - 6:55 pmLAX Los Angeles-LHR London Heathrow

14h 45m1 stop Dublin

12:10 pm - 6:40 pmLHR London Heathrow-LAX Los Angeles

14h 30m1 stop Dublin

$1,002Aer Lingus

Tue, Sep 1 - Fri, Sep 11

5:40 pm - 3:00 pmSFO San Francisco-LHR London Heathrow

13h 20m1 stop Dublin

9:50 am - 3:50 pmLHR London Heathrow-SFO San Francisco

14h 00m1 stop Dublin

$1,031Aer Lingus

Tue, Sep 1 - Mon, Sep 14

10:20 am - 5:45 pmLAX Los Angeles-LHR London Heathrow

23h 25m1 stop Casablanca Mohamed V

6:10 pm - 8:20 amLHR London Heathrow-LAX Los Angeles

22h 10m1 stop Casablanca Mohamed V

$4,847Royal Air Maroc

Useful Info

Low season	January
High season	July
Cheapest flight	$304

Best time to beat the crowds with an average 22% drop in price.

Most popular time to fly with an average 26% increase in price.

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-Sep 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 travelers 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 round-trip 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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Hayes

Slough

Richmond

Wembley

Salisbury

Luton

Ilford

Eastbourne

Crawley

Bedford

Guildford

Watford

Swindon

Colchester

Ipswich

Kingston upon Thames

Northampton

Twickenham

St. Albans

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London Heathrow Airport (LHR)

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$304 Find Cheap Flights from California to London Heathrow Airport - Compare and Save

Cheap Flights from California to Heathrow

Recent round-trip flight deals from California to Heathrow

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

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