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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

£145 CHEAP FLIGHTS from California to London Heathrow (LHR)

KAYAK searches hundreds of travel sites at once for deals on flights to London Heathrow Airport

...and more

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Filter your dealsChoose cabin class, free Wi-Fi and more.

Cheapest return fare

£383

Overall average: £543

Iberia

Mon 12/1Mon 2/2

SJC - LHR • 1 stop

Cheapest direct flights

£447

Typical prices: £499-£644

United Airlines

Mon 19/1Thu 29/1

SFO - LHR • Direct

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KAYAK searches hundreds of sites at once to find you the best travel deals.

We hope you love your trip to Heathrow!

Flight Deals

Cheap Flights from California to Heathrow

Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from California to Heathrow that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent return flight deals from California to Heathrow

Mon, 12 Jan - Mon, 2 Feb

06:00 - 06:50SJC-LHR

16h 50m1 stop

19:05 - 10:57LHR-SJC

23h 52m2 stops

£383Iberia

Find Deal

Mon, 12 Jan - Mon, 2 Feb

06:00 - 06:50SJC-LHR

16h 50m1 stop

19:40 - 10:57LHR-SJC

23h 17m2 stops

£384Iberia

Find Deal

Sun, 11 Jan - Tue, 27 Jan

14:25 - 12:00SMF-LHR

13h 35m1 stop

06:35 - 17:46LHR-SMF

19h 11m2 stops

£399Lufthansa

Find Deal

Tue, 13 Jan - Sat, 7 Feb

06:00 - 06:50SJC-LHR

16h 50m1 stop

07:30 - 21:29LHR-SJC

21h 59m2 stops

£400Iberia

Find Deal

Sun, 11 Jan - Tue, 27 Jan

12:30 - 11:50SMF-LHR

15h 20m1 stop

06:35 - 17:46LHR-SMF

19h 11m2 stops

£414Multiple Airlines

Find Deal

Sun, 11 Jan - Tue, 27 Jan

12:30 - 11:50SMF-LHR

15h 20m1 stop

14:30 - 11:52LHR-SMF

29h 22m1 stop

£416Air Canada

Find Deal

Tue, 13 Jan - Tue, 20 Jan

08:40 - 09:40SJC-LHR

17h 00m1 stop

11:35 - 20:56LHR-SJC

17h 21m1 stop

£419Lufthansa

Find Deal

Fri, 16 Jan - Fri, 23 Jan

06:45 - 05:55SNA-LHR

15h 10m1 stop

06:50 - 18:41LHR-SNA

19h 51m2 stops

£429Brussels Airlines

Find Deal

Mon, 19 Jan - Tue, 27 Jan

12:30 - 11:50SMF-LHR

15h 20m1 stop

13:25 - 11:55LHR-SMF

30h 30m2 stops

£440Air Canada

Find Deal

Sun, 11 Jan - Tue, 27 Jan

06:00 - 07:10SMF-LHR

17h 10m2 stops

06:35 - 11:52LHR-SMF

37h 17m2 stops

£441Multiple Airlines

Find Deal

Useful Info

Low season	February
High season	July
Cheapest flight	£145

Best time to beat the crowds (10% less expensive on average)

Most popular time to fly (9% more expensive on average)

Flight from Las Vegas to London Heathrow Airport

GeraldFlew with Virgin AtlanticSFO-LHRJun 2025

Virgin Atlantic uses terminal 3. Much faster clearing customs than terminal 5

Verified travelerFlew with American AirlinesSFO-LHRJun 2025

Large number of passengers on the flight so arrive early to the airport and to the boarding gate

ValerieFlew with British AirwaysLAX-LHRApr 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 AirwaysSFO-LHRApr 2025

Eat at the lounge first so you are not stuck eating overcooked cheese ravioli

Verified travelerFlew with IberiaLAX-LHRJan 2025

Make sure you arrive early. Sometimes, the traffic getting to LAX can be a total nightmare.

WeiFlew with British AirwaysLAX-LHRSept 2024

Connection takes long, Make sure you plan enough time.

TapanFlew with British AirwaysSFO-LHROct 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 AirwaysLAX-LHRMar 2024

Pack your own food if you have dietary restrictions and fly other airlines if possible

MichelleFlew with British AirwaysLAX-LHRMay 2024

Make sure you separate your luggage tags from your tickets

ShaunaFlew with British AirwaysLAX-LHRDec 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

Slough

Winchester

Croydon

Stansted

Poole

Folkestone

Chichester

Maidstone

Salisbury

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Chelmsford

Crawley

Everything you need to know for your flight to Heathrow

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London Heathrow Airport (LHR)

£145 Find Cheap Flights from California to London Heathrow Airport

KAYAK searches hundreds of travel sites at once for deals on flights to London Heathrow Airport

Everything you should know

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

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

FAQs for booking California to London Heathrow Airport flights

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.

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