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.

$265 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

Tue, Jan 12 - Sat, Feb 6

9:00 am - 9:20 amSFO San Francisco-LHR London Heathrow

16h 20m2 stops Vancouver Intl Calgary

8:50 am - 3:35 pmLHR London Heathrow-SFO San Francisco

14h 45m1 stop Dublin

$605Multiple Airlines

Sun, Nov 15 - Mon, Nov 30

6:25 pm - 1:05 pmLAX Los Angeles Los Angeles-LHR London Heathrow

10h 40mnonstop

12:10 pm - 6:30 pmLHR London Heathrow-LAX Los Angeles Los Angeles

14h 20m1 stop Dublin

$612Multiple Airlines

Sat, Oct 31 - Mon, Nov 9

5:45 pm - 5:40 pmSFO San Francisco-LHR London Heathrow

16h 55m1 stop Kastrup Copenhagen

6:40 am - 2:50 pmLHR London Heathrow-SFO San Francisco

16h 10m1 stop Kastrup Copenhagen

$628Scandinavian Airlines

Thu, Oct 29 - Sun, Nov 8

5:45 pm - 5:40 pmSFO San Francisco-LHR London Heathrow

16h 55m1 stop Kastrup Copenhagen

6:40 am - 2:50 pmLHR London Heathrow-SFO San Francisco

16h 10m1 stop Kastrup Copenhagen

$629Scandinavian Airlines

Mon, Sep 21 - Tue, Oct 6

4:30 pm - 5:45 pmSFO San Francisco-LHR London Heathrow

17h 15m1 stop Lisbon Humberto Delgado

1:45 pm - 2:35 pmLHR London Heathrow-SFO San Francisco

32h 50m1 stop Lisbon Humberto Delgado

$637TAP AIR PORTUGAL

Thu, Sep 17 - Mon, Sep 28

4:30 pm - 10:55 pmSFO San Francisco-LHR London Heathrow

22h 25m1 stop Lisbon Humberto Delgado

1:45 pm - 1:35 pmLHR London Heathrow-SFO San Francisco

31h 50m1 stop Lisbon Humberto Delgado

$641TAP AIR PORTUGAL

Mon, Nov 9 - Mon, Nov 30

8:50 pm - 3:25 pmLAX Los Angeles Los Angeles-LHR London Heathrow

10h 35mnonstop

12:30 pm - 3:50 pmLHR London Heathrow-LAX Los Angeles Los Angeles

11h 20mnonstop

$687British Airways

Mon, Nov 9 - Mon, Nov 30

6:00 pm - 12:30 pmLAX Los Angeles Los Angeles-LHR London Heathrow

10h 30mnonstop

10:05 am - 1:25 pmLHR London Heathrow-LAX Los Angeles Los Angeles

11h 20mnonstop

$688British Airways

Tue, Nov 24 - Thu, Nov 26

4:40 pm - 11:15 amSFO San Francisco-LHR London Heathrow

10h 35mnonstop

9:00 am - 4:30 pmLHR London Heathrow-SFO San Francisco

15h 30m1 stop Zurich

$727United Airlines

Wed, Nov 25 - Fri, Nov 27

4:40 pm - 11:15 amSFO San Francisco-LHR London Heathrow

10h 35mnonstop

9:00 am - 4:30 pmLHR London Heathrow-SFO San Francisco

15h 30m1 stop Zurich

$727United Airlines

Recent last minute flight deals from California to Heathrow

Thu, Aug 20 - Wed, Sep 23

4:30 pm - 5:45 pmSFO San Francisco-LHR London Heathrow

17h 15m1 stop Lisbon Humberto Delgado

6:45 pm - 2:30 pmLHR London Heathrow-SFO San Francisco

27h 45m1 stop Lisbon Humberto Delgado

$778TAP AIR PORTUGAL

Thu, Aug 20 - Tue, Sep 22

4:30 pm - 6:50 pmSFO San Francisco-LHR London Heathrow

18h 20m1 stop Lisbon Humberto Delgado

6:45 pm - 2:35 pmLHR London Heathrow-SFO San Francisco

27h 50m1 stop Lisbon Humberto Delgado

$792TAP AIR PORTUGAL

Sat, Aug 22 - Mon, Oct 5

6:00 am - 9:30 amSFO San Francisco-LHR London Heathrow

19h 30m1 stop New York John F Kennedy Intl

6:30 am - 12:40 pmLHR London Heathrow-SFO San Francisco

14h 10m1 stop Frankfurt am Main

$837Multiple Airlines

Sat, Aug 22 - Mon, Oct 5

6:00 am - 9:30 amSFO San Francisco-LHR London Heathrow

19h 30m1 stop New York John F Kennedy Intl

4:15 pm - 7:15 pmLHR London Heathrow-SFO San Francisco

11h 00mnonstop

$868Multiple Airlines

Thu, Aug 20 - Fri, Aug 28

10:25 am - 8:45 pmLAS Las Vegas Harry Reid Intl-LHR London Heathrow

26h 20m1 stop New York John F Kennedy Intl

11:55 am - 12:47 amLHR London Heathrow-LAS Las Vegas Harry Reid Intl

20h 52m1 stop New York John F Kennedy Intl

$869JetBlue

Tue, Aug 18 - Mon, Aug 24

12:50 pm - 8:45 pmLAX Los Angeles Los Angeles-LHR London Heathrow

23h 55m1 stop New York John F Kennedy Intl

8:15 am - 10:49 pmLHR London Heathrow-LAX Los Angeles Los Angeles

22h 34m1 stop New York John F Kennedy Intl

$886JetBlue

Wed, Aug 19 - Mon, Aug 24

3:05 pm - 8:20 amLAX Los Angeles Los Angeles-LHR London Heathrow

33h 15m1 stop Vienna Intl

9:05 am - 1:05 pmLHR London Heathrow-LAX Los Angeles Los Angeles

36h 00m1 stop Vienna Intl

$906Austrian Airlines

Wed, Aug 19 - Mon, Aug 31

3:05 pm - 9:40 pmLAX Los Angeles Los Angeles-LHR London Heathrow

22h 35m1 stop Vienna Intl

9:05 am - 1:05 pmLHR London Heathrow-LAX Los Angeles Los Angeles

36h 00m1 stop Vienna Intl

$909Austrian Airlines

Tue, Aug 18 - Tue, Sep 15

7:35 pm - 7:20 pmLAX Los Angeles Los Angeles-LHR London Heathrow

15h 45m1 stop Zurich

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

15h 45m1 stop Zurich

$909SWISS

Wed, Aug 19 - Mon, Sep 7

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

14h 15m1 stop Zurich

6:40 pm - 4:30 pmLHR London Heathrow-LAX Los Angeles Los Angeles

29h 50m1 stop Zurich

$924SWISS

Recent direct flight deals from California to Heathrow

Mon, Nov 9 - Mon, Nov 30

8:50 pm - 3:25 pmLAX Los Angeles Los Angeles-LHR London Heathrow

10h 35mnonstop

12:30 pm - 3:50 pmLHR London Heathrow-LAX Los Angeles Los Angeles

11h 20mnonstop

$687British Airways

Mon, Nov 9 - Mon, Nov 30

6:00 pm - 12:30 pmLAX Los Angeles Los Angeles-LHR London Heathrow

10h 30mnonstop

10:05 am - 1:25 pmLHR London Heathrow-LAX Los Angeles Los Angeles

11h 20mnonstop

$688British Airways

Wed, Nov 18 - Fri, Nov 27

6:00 pm - 12:30 pmLAX Los Angeles Los Angeles-LHR London Heathrow

10h 30mnonstop

10:05 am - 1:25 pmLHR London Heathrow-LAX Los Angeles Los Angeles

11h 20mnonstop

$775Multiple Airlines

Tue, Nov 10 - Wed, Dec 2

3:30 pm - 10:00 amLAX Los Angeles Los Angeles-LHR London Heathrow

10h 30mnonstop

11:50 am - 3:20 pmLHR London Heathrow-LAX Los Angeles Los Angeles

11h 30mnonstop

$775Multiple Airlines

Tue, Sep 29 - Tue, Oct 6

5:45 pm - 12:05 pmSFO San Francisco-LHR London Heathrow

10h 20mnonstop

12:45 pm - 3:45 pmLHR London Heathrow-SFO San Francisco

11h 00mnonstop

$859Virgin Atlantic

Wed, Sep 30 - Wed, Oct 7

5:45 pm - 12:05 pmSFO San Francisco-LHR London Heathrow

10h 20mnonstop

12:45 pm - 3:45 pmLHR London Heathrow-SFO San Francisco

11h 00mnonstop

$867Virgin Atlantic

Wed, Dec 9 - Wed, Dec 23

8:50 pm - 3:25 pmLAX Los Angeles Los Angeles-LHR London Heathrow

10h 35mnonstop

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

11h 20mnonstop

$870Iberia

Tue, Dec 1 - Thu, Dec 17

8:50 pm - 3:25 pmLAX Los Angeles Los Angeles-LHR London Heathrow

10h 35mnonstop

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

11h 20mnonstop

$870Iberia

Wed, Dec 9 - Wed, Dec 23

5:30 pm - 12:10 pmLAX Los Angeles Los Angeles-LHR London Heathrow

10h 40mnonstop

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

11h 20mnonstop

$871Finnair

Mon, Nov 23 - Fri, Dec 4

5:30 pm - 12:10 pmLAX Los Angeles Los Angeles-LHR London Heathrow

10h 40mnonstop

11:50 am - 3:20 pmLHR London Heathrow-LAX Los Angeles Los Angeles

11h 30mnonstop

$882Finnair

Useful Info

Low season	January
High season	July
Cheapest flight	$265

Best time to beat the crowds with an average 21% drop in price.

Most popular time to fly with an average 29% increase in price.

Flight from Sacramento 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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Richmond

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Salisbury

Luton

Eastbourne

Ilford

Crawley

Watford

Bedford

Swindon

Colchester

Ipswich

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London Heathrow Airport (LHR)

LHR

$265 Find Cheap Flights from California to London Heathrow Airport - Compare and Save

Cheap Flights from California to Heathrow

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

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Everything you need to know for your flight to Heathrow

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