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.

£200 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, 21 Apr - Tue, 11 May

18:40 - 13:10SFO San Francisco-LHR London Heathrow

10h 30mdirect

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

11h 05mdirect

£547British Airways

Sat, 17 Apr - Fri, 30 Apr

16:45 - 21:35SFO San Francisco-LHR London Heathrow

20h 50m2 stops Kastrup Copenhagen Oslo Gardermoen

06:40 - 14:40LHR London Heathrow-SFO San Francisco

16h 00m1 stop Kastrup Copenhagen

£547Scandinavian Airlines

Mon, 19 Apr - Fri, 23 Apr

16:45 - 18:50SFO San Francisco-LHR London Heathrow

18h 05m2 stops Kastrup Copenhagen Oslo Gardermoen

06:40 - 14:40LHR London Heathrow-SFO San Francisco

16h 00m1 stop Kastrup Copenhagen

£547Scandinavian Airlines

Tue, 12 Jan - Wed, 20 Jan

17:10 - 22:40LAX Los Angeles-LHR London Heathrow

21h 30m1 stop Lisbon Humberto Delgado

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

28h 45m1 stop Lisbon Humberto Delgado

£549TAP AIR PORTUGAL

Tue, 1 Dec - Wed, 9 Dec

17:10 - 21:35LAX Los Angeles-LHR London Heathrow

20h 25m1 stop Lisbon Humberto Delgado

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

28h 45m1 stop Lisbon Humberto Delgado

£550TAP AIR PORTUGAL

Wed, 28 Apr - Fri, 30 Apr

19:40 - 14:10SFO San Francisco-LHR London Heathrow

10h 30mdirect

08:45 - 16:30LHR London Heathrow-SFO San Francisco

15h 45m1 stop Zurich

£554United Airlines

Tue, 20 Apr - Thu, 22 Apr

19:40 - 14:10SFO San Francisco-LHR London Heathrow

10h 30mdirect

08:45 - 16:15LHR London Heathrow-SFO San Francisco

15h 30m1 stop Zurich

£554United Airlines

Sun, 21 Mar - Tue, 23 Mar

16:00 - 14:45LAX Los Angeles-LHR London Heathrow

15h 45m1 stop Frankfurt am Main

06:35 - 16:15LHR London Heathrow-LAX Los Angeles

16h 40m1 stop Munich Franz Josef Strauss

£554Lufthansa

Mon, 22 Feb - Tue, 9 Mar

20:35 - 15:10SFO San Francisco-LHR London Heathrow

10h 35mdirect

11:45 - 14:55LHR London Heathrow-SFO San Francisco

11h 10mdirect

£571British Airways

Sun, 14 Mar - Tue, 16 Mar

18:30 - 17:05LAX Los Angeles-LHR London Heathrow

15h 35m1 stop Munich Franz Josef Strauss

11:10 - 00:25LHR London Heathrow-LAX Los Angeles

20h 15m2 stops Munich Franz Josef Strauss San Francisco

£573Lufthansa

Recent last minute flight deals from California to Heathrow

Fri, 13 Nov - Sat, 21 Nov

09:20 - 17:00LAX Los Angeles-LHR London Heathrow

23h 40m1 stop Casablanca Mohamed V

18:00 - 07:20LHR London Heathrow-LAX Los Angeles

21h 20m1 stop Casablanca Mohamed V

£549Royal Air Maroc

Fri, 13 Nov - Mon, 23 Nov

09:20 - 17:00LAX Los Angeles-LHR London Heathrow

23h 40m1 stop Casablanca Mohamed V

17:10 - 07:20LHR London Heathrow-LAX Los Angeles

22h 10m1 stop Casablanca Mohamed V

£550Royal Air Maroc

Sat, 14 Nov - Sat, 21 Nov

16:35 - 21:35SFO San Francisco-LHR London Heathrow

21h 00m1 stop Lisbon Humberto Delgado

06:00 - 14:45LHR London Heathrow-SFO San Francisco

16h 45m1 stop Lisbon Humberto Delgado

£558TAP AIR PORTUGAL

Sat, 14 Nov - Fri, 11 Dec

16:35 - 21:35SFO San Francisco-LHR London Heathrow

21h 00m1 stop Lisbon Humberto Delgado

13:40 - 14:45LHR London Heathrow-SFO San Francisco

33h 05m1 stop Lisbon Humberto Delgado

£558TAP AIR PORTUGAL

Fri, 13 Nov - Sun, 29 Nov

17:25 - 11:50SFO San Francisco-LHR London Heathrow

10h 25mdirect

11:45 - 14:55LHR London Heathrow-SFO San Francisco

11h 10mdirect

£599British Airways

Fri, 13 Nov - Fri, 27 Nov

20:35 - 15:10SFO San Francisco-LHR London Heathrow

10h 35mdirect

11:45 - 14:55LHR London Heathrow-SFO San Francisco

11h 10mdirect

£656British Airways

Thu, 12 Nov - Tue, 17 Nov

15:00 - 22:55LAX Los Angeles-LHR London Heathrow

23h 55m3 stops Frankfurt am Main Stockholm Arlanda Munich Franz Josef Strauss

17:50 - 13:05LHR London Heathrow-LAX Los Angeles

27h 15m3 stops Munich Franz Josef Strauss Stockholm Arlanda Frankfurt am Main

£714Lufthansa

Wed, 11 Nov - Mon, 16 Nov

16:40 - 10:55SFO San Francisco-LHR London Heathrow

10h 15mdirect

20:25 - 11:45LHR London Heathrow-SFO San Francisco

23h 20m1 stop Amsterdam Schiphol

£717Virgin Atlantic

Wed, 11 Nov - Wed, 18 Nov

07:00 - 10:40ONT Ontario-LHR London Heathrow

19h 40m1 stop Seattle/Tacoma Intl

17:05 - 23:00LHR London Heathrow-ONT Ontario

37h 55m2 stops Amsterdam Schiphol Seattle/Tacoma Intl

£723Virgin Atlantic

Mon, 16 Nov - Fri, 27 Nov

14:10 - 19:35FAT Fresno Airterminal-LHR London Heathrow

21h 25m2 stops Los Angeles Munich Franz Josef Strauss

07:40 - 20:09LHR London Heathrow-FAT Fresno Airterminal

20h 29m2 stops Munich Franz Josef Strauss Los Angeles

£743Lufthansa

Useful Info

Low season	January
High season	July
Cheapest flight	£200

Best time to beat the crowds (28% less expensive on average)

Most popular time to fly (12% 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 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.

Gatwick

Eastbourne

Milton Keynes

Hounslow

Luton

Northampton

Southend-on-Sea

Newport

Folkestone

Winchester

Poole

Swindon

Croydon

Slough

Stansted

Colchester

Crawley

Chichester

Maidstone

Salisbury

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£200 Find Cheap Flights from California to London Heathrow Airport – Compare and Save

Cheap Flights from California to Heathrow

Recent return flight deals from California to Heathrow

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Recent last minute flight deals from California to Heathrow

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Good to know - Cheap tickets from California to London Heathrow Airport

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

FAQs for booking California to London Heathrow Airport flights

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More options for your flight to Heathrow

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

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