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.

$262 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

Sun, Jan 10 - Fri, Jan 29

9:05 am - 10:40 amSJC San Jose-LHR London Heathrow

17h 35m2 stops Los Angeles Seattle/Tacoma Intl

8:55 am - 9:47 pmLHR London Heathrow-SJC San Jose

20h 52m2 stops Paris Charles de Gaulle Los Angeles

$651Virgin Atlantic

Sun, Jan 10 - Fri, Jan 29

1:50 pm - 4:30 pmSJC San Jose-LHR London Heathrow

18h 40m1 stop Los Angeles

8:55 am - 9:47 pmLHR London Heathrow-SJC San Jose

20h 52m2 stops Paris Charles de Gaulle Los Angeles

$651Virgin Atlantic

Fri, Oct 2 - Mon, Oct 12

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

$661Royal Air Maroc

Sun, Jan 10 - Sun, Jan 17

8:25 pm - 9:05 pmLAX Los Angeles-LHR London Heathrow

16h 40m1 stop Dublin

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

14h 30m1 stop Dublin

$669Aer Lingus

Sun, Nov 8 - Fri, Nov 13

5:20 pm - 4:50 pmSFO San Francisco-LHR London Heathrow

15h 30m1 stop Dublin

9:50 am - 3:35 pmLHR London Heathrow-SFO San Francisco

13h 45m1 stop Dublin

$693Aer Lingus

Mon, Jan 18 - Mon, Jan 25

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

15h 20m1 stop Vancouver Intl

8:05 pm - 4:35 pmLHR London Heathrow-LAX Los Angeles

28h 30m1 stop Zurich

$694Multiple Airlines

Wed, Jan 13 - Wed, Jan 27

5:25 pm - 11:50 amSFO San Francisco-LHR London Heathrow

10h 25mnonstop

11:45 am - 2:55 pmLHR London Heathrow-SFO San Francisco

11h 10mnonstop

$722British Airways

Wed, Oct 28 - Wed, Nov 4

6:30 am - 7:50 amSJC San Jose-LHR London Heathrow

18h 20m1 stop Atlanta Hartsfield-Jackson

6:20 am - 5:38 pmLHR London Heathrow-SJC San Jose

19h 18m2 stops Paris Charles de Gaulle Los Angeles

$731Multiple Airlines

Wed, Dec 2 - Mon, Dec 7

8:35 pm - 3:10 pmSFO San Francisco-LHR London Heathrow

10h 35mnonstop

3:20 pm - 6:45 pmLHR London Heathrow-SFO San Francisco

11h 25mnonstop

$769British Airways

Sun, Oct 11 - Sat, Oct 17

10:20 am - 4:50 pmLAX Los Angeles-LHR London Heathrow

22h 30m1 stop Casablanca Mohamed V

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

22h 10m1 stop Casablanca Mohamed V

$781Royal Air Maroc

Recent last minute flight deals from California to Heathrow

Sun, Sep 20 - Mon, Oct 5

6:40 am - 7:15 amSJC San Jose-LHR London Heathrow

16h 35m1 stop Atlanta Hartsfield-Jackson

2:30 pm - 10:06 pmLHR London Heathrow-SJC San Jose

15h 36m1 stop Los Angeles

$691Virgin Atlantic

Sun, Sep 20 - Tue, Oct 6

11:41 am - 5:35 pmSJC San Jose-LHR London Heathrow

21h 54m1 stop Los Angeles

11:45 am - 11:00 pmLHR London Heathrow-SJC San Jose

19h 15m2 stops Amsterdam Schiphol Seattle/Tacoma Intl

$730Virgin Atlantic

Sun, Sep 20 - Tue, Oct 6

6:17 am - 3:05 pmSJC San Jose-LHR London Heathrow

24h 48m1 stop Seattle/Tacoma Intl

5:00 pm - 8:00 pmLHR London Heathrow-SJC San Jose

35h 00m1 stop Seattle/Tacoma Intl

$734Alaska Airlines

Sun, Sep 20 - Tue, Oct 6

7:03 am - 3:05 pmBUR Burbank Bob Hope-LHR London Heathrow

24h 02m1 stop Seattle/Tacoma Intl

5:00 pm - 9:06 amLHR London Heathrow-BUR Burbank Bob Hope

24h 06m1 stop Seattle/Tacoma Intl

$745Alaska Airlines

Sun, Sep 20 - Fri, May 28

3:40 pm - 10:10 amLAX Los Angeles-LHR London Heathrow

10h 30mnonstop

1:05 pm - 4:10 pmLHR London Heathrow-LAX Los Angeles

11h 05mnonstop

$766United Airlines

Fri, Sep 18 - Wed, Oct 7

3:40 pm - 10:10 amLAX Los Angeles-LHR London Heathrow

10h 30mnonstop

6:55 am - 3:15 pmLHR London Heathrow-LAX Los Angeles

16h 20m1 stop Munich Franz Josef Strauss

$769United Airlines

Sat, Sep 19 - Fri, Dec 11

4:30 pm - 11:05 amLAX Los Angeles-LHR London Heathrow

10h 35mnonstop

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

11h 20mnonstop

$771British Airways

Sun, Sep 20 - Sun, Sep 27

6:05 pm - 12:45 pmLAX Los Angeles-LHR London Heathrow

10h 40mnonstop

8:20 am - 11:45 amLHR London Heathrow-LAX Los Angeles

11h 25mnonstop

$771British Airways

Thu, Sep 17 - Thu, Oct 1

8:30 pm - 2:55 pmLAX Los Angeles-LHR London Heathrow

10h 25mnonstop

8:55 am - 6:44 pmLHR London Heathrow-LAX Los Angeles

17h 49m1 stop Paris Charles de Gaulle

$774Delta

Fri, Sep 18 - Fri, Sep 25

8:35 pm - 3:00 pmLAX Los Angeles-LHR London Heathrow

10h 25mnonstop

6:15 am - 12:55 pmLHR London Heathrow-LAX Los Angeles

14h 40m1 stop Paris Charles de Gaulle

$775Delta

Useful Info

Low season	January
High season	July
Cheapest flight	$262

Best time to beat the crowds with an average 23% drop in price.

Most popular time to fly with an average 24% 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.

Hounslow

Slough

Hayes

Richmond

Wembley

Salisbury

Luton

Eastbourne

Ilford

Crawley

Guildford

Swindon

Colchester

Northampton

Ipswich

Bedford

Kingston upon Thames

Watford

Newbury

Twickenham

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$262 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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