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.

$268 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.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from California to Heathrow

Thu, Apr 15 - Sat, May 1

4:45 pm - 6:50 pmSFO San Francisco-LHR London Heathrow

18h 05m2 stops Kastrup Copenhagen Oslo Gardermoen

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

16h 00m1 stop Kastrup Copenhagen

$733Scandinavian Airlines

Sat, Apr 17 - Sat, May 1

4:45 pm - 9:35 pmSFO San Francisco-LHR London Heathrow

20h 50m2 stops Kastrup Copenhagen Oslo Gardermoen

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

16h 00m1 stop Kastrup Copenhagen

$733Scandinavian Airlines

Wed, Apr 21 - Tue, May 11

6:40 pm - 1:10 pmSFO San Francisco-LHR London Heathrow

10h 30mnonstop

10:45 am - 1:50 pmLHR London Heathrow-SFO San Francisco

11h 05mnonstop

$733British Airways

Fri, Mar 5 - Thu, Mar 18

7:15 pm - 10:40 pmSFO San Francisco-LHR London Heathrow

19h 25m1 stop Lisbon Humberto Delgado

6:30 pm - 5:05 pmLHR London Heathrow-SFO San Francisco

29h 35m1 stop Lisbon Humberto Delgado

$736TAP AIR PORTUGAL

Tue, Feb 23 - Tue, Mar 16

5:10 pm - 9:35 pmLAX Los Angeles-LHR London Heathrow

20h 25m1 stop Lisbon Humberto Delgado

6:00 am - 4:15 pmLHR London Heathrow-LAX Los Angeles

17h 15m1 stop Lisbon Humberto Delgado

$737TAP AIR PORTUGAL

Thu, Jan 21 - Mon, Jan 25

10:08 am - 9:30 amLAX Los Angeles-LHR London Heathrow

15h 22m1 stop New York John F Kennedy Intl

5:10 pm - 7:20 amLHR London Heathrow-LAX Los Angeles

22h 10m1 stop Casablanca Mohamed V

$737Multiple Airlines

Thu, Jan 14 - Mon, Jan 25

8:40 pm - 8:55 pmLAX Los Angeles-LHR London Heathrow

16h 15m1 stop New York John F Kennedy Intl

5:10 pm - 7:20 amLHR London Heathrow-LAX Los Angeles

22h 10m1 stop Casablanca Mohamed V

$737Multiple Airlines

Sun, Mar 7 - Thu, Mar 11

9:20 am - 3:50 pmLAX Los Angeles-LHR London Heathrow

22h 30m1 stop Casablanca Mohamed V

5:10 pm - 7:20 amLHR London Heathrow-LAX Los Angeles

22h 10m1 stop Casablanca Mohamed V

$741Royal Air Maroc

Fri, Jan 22 - Sat, Jan 23

9:20 am - 3:50 pmLAX Los Angeles-LHR London Heathrow

22h 30m1 stop Casablanca Mohamed V

6:00 pm - 7:20 amLHR London Heathrow-LAX Los Angeles

21h 20m1 stop Casablanca Mohamed V

$741Royal Air Maroc

Mon, Feb 22 - Tue, Mar 9

8:35 pm - 3:10 pmSFO San Francisco-LHR London Heathrow

10h 35mnonstop

11:45 am - 2:55 pmLHR London Heathrow-SFO San Francisco

11h 10mnonstop

$765British Airways

Recent last minute flight deals from California to Heathrow

Fri, Nov 13 - Sat, Nov 21

9:20 am - 5:00 pmLAX Los Angeles-LHR London Heathrow

23h 40m1 stop Casablanca Mohamed V

6:00 pm - 7:20 amLHR London Heathrow-LAX Los Angeles

21h 20m1 stop Casablanca Mohamed V

$736Royal Air Maroc

Fri, Nov 13 - Mon, Nov 23

9:20 am - 5:00 pmLAX Los Angeles-LHR London Heathrow

23h 40m1 stop Casablanca Mohamed V

5:10 pm - 7:20 amLHR London Heathrow-LAX Los Angeles

22h 10m1 stop Casablanca Mohamed V

$737Royal Air Maroc

Tue, Nov 10 - Tue, Nov 17

5:10 pm - 11:25 amLAX Los Angeles-LHR London Heathrow

34h 15m1 stop Lisbon Humberto Delgado

6:00 am - 3:15 pmLHR London Heathrow-LAX Los Angeles

17h 15m1 stop Lisbon Humberto Delgado

$740TAP AIR PORTUGAL

Tue, Nov 10 - Wed, Nov 18

5:10 pm - 9:35 pmLAX Los Angeles-LHR London Heathrow

20h 25m1 stop Lisbon Humberto Delgado

6:30 pm - 3:15 pmLHR London Heathrow-LAX Los Angeles

28h 45m1 stop Lisbon Humberto Delgado

$741TAP AIR PORTUGAL

Sat, Nov 14 - Tue, Nov 17

7:30 pm - 4:25 pmLAX Los Angeles-LHR London Heathrow

36h 55m2 stops Kastrup Copenhagen Oslo Gardermoen

10:20 am - 5:00 pmLHR London Heathrow-LAX Los Angeles

14h 40m1 stop Kastrup Copenhagen

$757Scandinavian Airlines

Sat, Nov 14 - Tue, Nov 17

7:30 pm - 4:25 pmLAX Los Angeles-LHR London Heathrow

36h 55m2 stops Kastrup Copenhagen Oslo Gardermoen

9:55 am - 5:00 pmLHR London Heathrow-LAX Los Angeles

39h 05m2 stops Stockholm Arlanda Kastrup Copenhagen

$758Scandinavian Airlines

Wed, Nov 11 - Wed, Nov 18

4:30 pm - 9:40 pmLAX Los Angeles-LHR London Heathrow

21h 10m1 stop New York John F Kennedy Intl

12:20 pm - 9:03 pmLHR London Heathrow-LAX Los Angeles

16h 43m1 stop New York John F Kennedy Intl

$797JetBlue

Sat, Nov 14 - Sat, Dec 5

6:05 am - 6:55 amLAX Los Angeles-LHR London Heathrow

16h 50m1 stop Boston Logan Intl

9:20 am - 10:49 pmLHR London Heathrow-LAX Los Angeles

21h 29m1 stop Boston Logan Intl

$797JetBlue

Fri, Nov 13 - Sun, Nov 29

5:25 pm - 11:50 amSFO San Francisco-LHR London Heathrow

10h 25mnonstop

11:45 am - 2:55 pmLHR London Heathrow-SFO San Francisco

11h 10mnonstop

$803British Airways

Fri, Nov 13 - Tue, Dec 1

8:35 pm - 3:10 pmSFO San Francisco-LHR London Heathrow

10h 35mnonstop

3:20 pm - 6:45 pmLHR London Heathrow-SFO San Francisco

11h 25mnonstop

$922British Airways

Useful Info

Low season	January
High season	July
Cheapest flight	$268

Best time to beat the crowds with an average 23% drop in price.

Most popular time to fly with an average 20% increase in price.

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-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.

Hounslow

Hayes

Slough

Richmond

Wembley

Salisbury

Luton

Ilford

Eastbourne

Northampton

Kingston upon Thames

Guildford

Swindon

Crawley

Bedford

Watford

Harrow

Moreton-in-Marsh

Ipswich

Folkestone

More options for your flight to Heathrow

Add a hotel or car rental

Airports

Cabin class

Direct Flights

Origins

Other airports

Other destinations

Return flight

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

Car rentals in London

LHR

$268 Find Cheap Flights from California to London Heathrow Airport - Compare and Save

Cheap Flights from California to Heathrow

Recent round-trip 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

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

Traveling to a place near Heathrow?

More options for your flight to Heathrow

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

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