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)

Save 25% 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

Tue, 12 Jan - Sat, 6 Feb

09:00 - 09:20SFO San Francisco-LHR London Heathrow

16h 20m2 stops Vancouver Intl Calgary

08:50 - 15:35LHR London Heathrow-SFO San Francisco

14h 45m1 stop Dublin

£448Multiple Airlines

Sun, 15 Nov - Mon, 30 Nov

18:25 - 13:05LAX Los Angeles-LHR London Heathrow

10h 40mdirect

12:10 - 18:30LHR London Heathrow-LAX Los Angeles

14h 20m1 stop Dublin

£454Multiple Airlines

Mon, 9 Nov - Mon, 30 Nov

20:50 - 15:25LAX Los Angeles-LHR London Heathrow

10h 35mdirect

12:30 - 15:50LHR London Heathrow-LAX Los Angeles

11h 20mdirect

£509British Airways

Mon, 9 Nov - Mon, 30 Nov

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

10h 30mdirect

10:05 - 13:25LHR London Heathrow-LAX Los Angeles

11h 20mdirect

£510British Airways

Mon, 23 Nov - Wed, 25 Nov

18:55 - 13:30LAX Los Angeles-LHR London Heathrow

10h 35mdirect

12:05 - 16:35LHR London Heathrow-LAX Los Angeles

36h 30m1 stop Zurich

£539United Airlines

Tue, 1 Dec - Thu, 3 Dec

18:55 - 13:30LAX Los Angeles-LHR London Heathrow

10h 35mdirect

09:00 - 16:35LHR London Heathrow-LAX Los Angeles

15h 35m1 stop Zurich

£539United Airlines

Thu, 29 Oct - Tue, 3 Nov

18:15 - 18:55LAX Los Angeles-LHR London Heathrow

17h 40m1 stop Lisbon Humberto Delgado

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

17h 15m1 stop Lisbon Humberto Delgado

£545TAP AIR PORTUGAL

Sun, 6 Dec - Tue, 8 Dec

17:30 - 18:35LAX Los Angeles-LHR London Heathrow

17h 05m1 stop Munich Franz Josef Strauss

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

21h 15m2 stops Munich Franz Josef Strauss San Francisco

£555Lufthansa

Mon, 7 Dec - Wed, 9 Dec

17:30 - 15:50LAX Los Angeles-LHR London Heathrow

14h 20m1 stop Munich Franz Josef Strauss

06:30 - 13:05LHR London Heathrow-LAX Los Angeles

14h 35m1 stop Frankfurt am Main

£555Lufthansa

Tue, 1 Dec - Tue, 15 Dec

17:15 - 21:35LAX Los Angeles-LHR London Heathrow

20h 20m1 stop Lisbon Humberto Delgado

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

17h 15m1 stop Lisbon Humberto Delgado

£580TAP AIR PORTUGAL

Recent last minute flight deals from California to Heathrow

Sun, 16 Aug - Tue, 25 Aug

16:40 - 17:45LAX Los Angeles-LHR London Heathrow

17h 05m1 stop Lisbon Humberto Delgado

06:00 - 14:45LHR London Heathrow-LAX Los Angeles

16h 45m1 stop Lisbon Humberto Delgado

£581TAP AIR PORTUGAL

Tue, 18 Aug - Tue, 25 Aug

16:45 - 10:20LAX Los Angeles-LHR London Heathrow

33h 35m1 stop Lisbon Humberto Delgado

06:00 - 14:45LHR London Heathrow-LAX Los Angeles

16h 45m1 stop Lisbon Humberto Delgado

£588TAP AIR PORTUGAL

Mon, 17 Aug - Mon, 31 Aug

20:55 - 09:10LAX Los Angeles-LHR London Heathrow

28h 15m1 stop Barcelona-El Prat

09:55 - 19:00LHR London Heathrow-LAX Los Angeles

17h 05m1 stop Barcelona-El Prat

£650LEVEL

Tue, 18 Aug - Thu, 24 Sep

23:59 - 20:45LAS Las Vegas Harry Reid Intl-LHR London Heathrow

12h 46m1 stop New York John F Kennedy Intl

08:15 - 00:38LHR London Heathrow-LAS Las Vegas Harry Reid Intl

24h 23m1 stop New York John F Kennedy Intl

£657JetBlue

Tue, 18 Aug - Sat, 22 Aug

17:50 - 08:25LAX Los Angeles-LHR London Heathrow

30h 35m1 stop Madrid Barajas

20:00 - 16:05LHR London Heathrow-LAX Los Angeles

28h 05m1 stop Madrid Barajas

£675Iberia

Tue, 18 Aug - Tue, 25 Aug

21:05 - 19:40SFO San Francisco-LHR London Heathrow

14h 35m1 stop Munich Franz Josef Strauss

10:50 - 19:00LHR London Heathrow-SFO San Francisco

16h 10m1 stop Munich Franz Josef Strauss

£683Lufthansa

Tue, 18 Aug - Tue, 8 Sep

21:05 - 19:40SFO San Francisco-LHR London Heathrow

14h 35m1 stop Munich Franz Josef Strauss

06:30 - 12:40LHR London Heathrow-SFO San Francisco

14h 10m1 stop Frankfurt am Main

£707Lufthansa

Wed, 19 Aug - Wed, 26 Aug

16:30 - 11:05LAX Los Angeles-LHR London Heathrow

10h 35mdirect

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

14h 50m1 stop Helsinki-Vantaa

£747Finnair

Mon, 17 Aug - Thu, 27 Aug

16:30 - 11:05LAX Los Angeles-LHR London Heathrow

10h 35mdirect

07:50 - 16:05LHR London Heathrow-LAX Los Angeles

16h 15m1 stop Madrid Barajas

£749Iberia

Wed, 19 Aug - Wed, 26 Aug

18:05 - 12:45LAX Los Angeles-LHR London Heathrow

10h 40mdirect

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

14h 50m1 stop Helsinki-Vantaa

£749Finnair

Useful Info

Low season	January
High season	December
Cheapest flight	£200

Best time to beat the crowds (23% less expensive on average)

Most popular time to fly (8% more expensive on average)

Flight from San Jose 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

Milton Keynes

Eastbourne

Hounslow

Luton

Southend-on-Sea

Northampton

Swindon

Winchester

Slough

Stansted

Folkestone

Croydon

Newport

Poole

Chichester

Colchester

Maidstone

Crawley

Salisbury

Everything you need to know for your flight to Heathrow

Airports

Cabin class

Complete your trip

Direct flights

Flights to other cities

Origins

Other airports

Return flight deals

Information on your arrival and departure airports

London Heathrow Airport (LHR)

£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

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?

Everything you need to know for your flight to Heathrow

Information on your arrival and departure airports

Cabin class types available on flights to Heathrow

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

Find direct flights for Heathrow

Flights to other popular destinations

Flights from domestic origins to California

Choose which airport to fly into in London

Find deals for your return flight