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.

£213 CHEAP FLIGHTS from California to London Heathrow (LHR)

Save 34% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals

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

Sat, 5 Dec - Tue, 15 Dec

16:35 - 22:40SFO San Francisco-LHR London Heathrow

22h 05m1 stop Lisbon Humberto Delgado

08:15 - 14:45LHR London Heathrow-SFO San Francisco

38h 30m1 stop Lisbon Humberto Delgado

£544TAP AIR PORTUGAL

Wed, 9 Dec - Tue, 15 Dec

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

21h 00m1 stop Lisbon Humberto Delgado

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

28h 15m1 stop Lisbon Humberto Delgado

£544TAP AIR PORTUGAL

Wed, 17 Feb - Fri, 19 Feb

16:40 - 11:15SFO San Francisco-LHR London Heathrow

10h 35mdirect

09:00 - 16:30LHR London Heathrow-SFO San Francisco

15h 30m1 stop Zurich

£549United Airlines

Sun, 17 Jan - Tue, 19 Jan

16:40 - 11:15SFO San Francisco-LHR London Heathrow

10h 35mdirect

09:00 - 16:30LHR London Heathrow-SFO San Francisco

15h 30m1 stop Zurich

£549United Airlines

Tue, 19 Jan - Thu, 21 Jan

12:03 - 22:55FAT Fresno Airterminal-LHR London Heathrow

26h 52m2 stops San Francisco Munich Franz Josef Strauss

14:30 - 11:28LHR London Heathrow-FAT Fresno Airterminal

28h 58m2 stops Vancouver Intl San Francisco

£563Multiple Airlines

Mon, 9 Nov - Wed, 18 Nov

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

10h 30mdirect

15:10 - 18:35LHR London Heathrow-LAX Los Angeles

11h 25mdirect

£565British Airways

Sat, 13 Feb - Sat, 20 Feb

21:40 - 20:55LAX Los Angeles-LHR London Heathrow

15h 15m1 stop New York John F Kennedy Intl

06:00 - 15:15LHR London Heathrow-LAX Los Angeles

17h 15m1 stop Lisbon Humberto Delgado

£565Multiple Airlines

Wed, 7 Apr - Fri, 9 Apr

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

15h 35m1 stop Munich Franz Josef Strauss

06:30 - 13:10LHR London Heathrow-LAX Los Angeles

14h 40m1 stop Frankfurt am Main

£568Lufthansa

Wed, 14 Apr - Fri, 16 Apr

15:05 - 14:40LAX Los Angeles-LHR London Heathrow

15h 35m1 stop Frankfurt am Main

07:25 - 15:15LHR London Heathrow-LAX Los Angeles

15h 50m1 stop Munich Franz Josef Strauss

£568Lufthansa

Mon, 5 Apr - Mon, 19 Apr

15:45 - 10:15LAX Los Angeles-LHR London Heathrow

10h 30mdirect

15:05 - 18:20LHR London Heathrow-LAX Los Angeles

11h 15mdirect

£574British Airways

Recent last minute flight deals from California to Heathrow

Thu, 22 Oct - Mon, 9 Nov

16:30 - 22:05SFO San Francisco-LHR London Heathrow

21h 35m1 stop Lisbon Humberto Delgado

06:00 - 14:25LHR London Heathrow-SFO San Francisco

16h 25m1 stop Lisbon Humberto Delgado

£563TAP AIR PORTUGAL

Sat, 24 Oct - Mon, 11 Jan

17:55 - 18:30LAX Los Angeles-LHR London Heathrow

16h 35m1 stop Lisbon Humberto Delgado

17:15 - 07:20LHR London Heathrow-LAX Los Angeles

22h 05m1 stop Casablanca Mohamed V

£568Multiple Airlines

Sat, 24 Oct - Tue, 24 Nov

19:35 - 21:35SFO San Francisco-LHR London Heathrow

19h 00m1 stop Lisbon Humberto Delgado

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

33h 05m1 stop Lisbon Humberto Delgado

£574TAP AIR PORTUGAL

Sat, 24 Oct - Mon, 11 Jan

17:55 - 18:30LAX Los Angeles-LHR London Heathrow

16h 35m1 stop Lisbon Humberto Delgado

11:05 - 07:20LHR London Heathrow-LAX Los Angeles

28h 15m2 stops Brussels Bruxelles-National Casablanca Mohamed V

£581Multiple Airlines

Wed, 21 Oct - Sun, 25 Oct

15:05 - 14:40LAX Los Angeles-LHR London Heathrow

15h 35m1 stop Frankfurt am Main

20:15 - 16:15LHR London Heathrow-LAX Los Angeles

27h 00m1 stop Munich Franz Josef Strauss

£685Lufthansa

Tue, 20 Oct - Fri, 13 Nov

17:55 - 12:15SFO San Francisco-LHR London Heathrow

10h 20mdirect

06:30 - 11:45LHR London Heathrow-SFO San Francisco

13h 15m1 stop Amsterdam Schiphol

£703Virgin Atlantic

Wed, 21 Oct - Tue, 27 Oct

17:55 - 12:15SFO San Francisco-LHR London Heathrow

10h 20mdirect

11:50 - 15:50LHR London Heathrow-SFO San Francisco

11h 00mdirect

£709Virgin Atlantic

Tue, 20 Oct - Tue, 27 Oct

17:30 - 15:40LAX Los Angeles-LHR London Heathrow

14h 10m1 stop Munich Franz Josef Strauss

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

16h 40m1 stop Munich Franz Josef Strauss

£710Lufthansa

Sun, 25 Oct - Thu, 19 Nov

14:50 - 10:45LAX Los Angeles-LHR London Heathrow

12h 55m1 stop Amsterdam Schiphol

06:30 - 18:34LHR London Heathrow-LAX Los Angeles

20h 04m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

£714KLM

Wed, 21 Oct - Wed, 28 Oct

13:50 - 10:45LAX Los Angeles-LHR London Heathrow

12h 55m1 stop Amsterdam Schiphol

06:30 - 16:04LHR London Heathrow-LAX Los Angeles

16h 34m2 stops Amsterdam Schiphol San Francisco

£718KLM

Useful Info

Low season	January
High season	July
Cheapest flight	£213

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

Most popular time to fly (14% 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

Poole

Winchester

Swindon

Croydon

Slough

Stansted

Colchester

Crawley

Chichester

Maidstone

Salisbury

More options for your flight to Heathrow

Add a hotel or car hire

Airports

Cabin class

Direct flights

Origins

Other airports

Other destinations

Return flight

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

£213 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

Recent one-way flight deals from California to Heathrow

Recent last minute flight deals from California to Heathrow

Recent direct flight deals from California to Heathrow

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

Low season

High season

Cheapest flight

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

FAQs for booking California to London Heathrow Airport flights

Travelling to a place near Heathrow?

More options for your flight to Heathrow

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

Information on your arrival and departure airports

Cabin class types available on flights to Heathrow

Find direct flights for Heathrow

Flights from domestic origins to California

Choose which airport to fly into in London

Flights to other popular destinations

Find deals for your return flight