How does KAYAK find such low prices on flights from California to London?

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.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from California to London?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London 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?

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 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?

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 from California up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$285 CHEAP FLIGHTS from California to London

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Cheap Flights from California to London

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 London

Sun, Nov 15 - Thu, Nov 19

9:20 am - 6:30 amLAX Los Angeles-STN London Stansted

37h 10m1 stop Casablanca Mohamed V

7:30 am - 7:20 amSTN London Stansted-LAX Los Angeles

31h 50m1 stop Casablanca Mohamed V

$596Royal Air Maroc

Sun, Nov 15 - Thu, Nov 19

9:20 am - 3:10 pmLAX Los Angeles-LGW London Gatwick

21h 50m1 stop Casablanca Mohamed V

4:10 pm - 7:20 amLGW London Gatwick-LAX Los Angeles

23h 10m1 stop Casablanca Mohamed V

$604Royal Air Maroc

Mon, Jan 11 - Mon, Jan 18

7:30 pm - 9:40 pmLAX Los Angeles-LHR London Heathrow

18h 10m1 stop Kastrup Copenhagen

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

14h 40m1 stop Kastrup Copenhagen

$626Scandinavian Airlines

Mon, Sep 21 - Tue, Oct 6

4:30 pm - 6:50 pmSFO San Francisco-LHR London Heathrow

18h 20m1 stop Lisbon Humberto Delgado

7:50 pm - 2:35 pmLHR London Heathrow-SFO San Francisco

26h 45m1 stop Lisbon Humberto Delgado

$644TAP AIR PORTUGAL

Mon, Sep 21 - Tue, Sep 29

4:30 pm - 10:55 pmSFO San Francisco-LHR London Heathrow

22h 25m1 stop Lisbon Humberto Delgado

1:45 pm - 2:35 pmLHR London Heathrow-SFO San Francisco

32h 50m1 stop Lisbon Humberto Delgado

$646TAP AIR PORTUGAL

Wed, Oct 21 - Sun, Oct 25

4:45 pm - 4:00 pmSFO San Francisco-LHR London Heathrow

15h 15m1 stop Kastrup Copenhagen

6:40 am - 3:50 pmLHR London Heathrow-SFO San Francisco

16h 10m1 stop Kastrup Copenhagen

$668Scandinavian Airlines

Mon, Nov 9 - Thu, Nov 12

8:50 pm - 3:25 pmLAX Los Angeles-LHR London Heathrow

10h 35mnonstop

12:30 pm - 3:50 pmLHR London Heathrow-LAX Los Angeles

11h 20mnonstop

$702British Airways

Mon, Jan 11 - Mon, Jan 18

8:50 pm - 3:25 pmLAX Los Angeles-LHR London Heathrow

10h 35mnonstop

12:30 pm - 3:50 pmLHR London Heathrow-LAX Los Angeles

11h 20mnonstop

$706British Airways

Mon, Nov 23 - Thu, Nov 26

5:35 pm - 11:50 amSFO San Francisco-LHR London Heathrow

34h 15m1 stop Vancouver Intl

6:50 am - 9:33 pmLHR London Heathrow-SFO San Francisco

22h 43m2 stops Brussels Bruxelles-National Montreal Pierre Elliott Trudeau Intl

$725Air Canada

Sat, Nov 14 - Tue, Nov 17

6:10 pm - 11:50 amLAX Los Angeles-LHR London Heathrow

33h 40m1 stop Vancouver Intl

6:50 am - 9:39 pmLHR London Heathrow-LAX Los Angeles

22h 49m2 stops Brussels Bruxelles-National Montreal Pierre Elliott Trudeau Intl

$725Air Canada

Recent last minute flight deals from California to London

Sun, Aug 9 - Mon, Aug 31

11:00 pm - 10:00 amLAX Los Angeles-LGW London Gatwick

27h 00m1 stop Orlando

2:00 pm - 5:30 pmLGW London Gatwick-LAX Los Angeles

35h 30m2 stops Orlando Houston George Bush Intcntl

$743Multiple Airlines

Sun, Aug 9 - Mon, Aug 31

11:00 pm - 10:00 amLAX Los Angeles-LGW London Gatwick

27h 00m1 stop Orlando

2:00 pm - 6:18 pmLGW London Gatwick-LAX Los Angeles

36h 18m1 stop Orlando

$749Multiple Airlines

Wed, Aug 12 - Wed, Sep 9

4:35 pm - 10:55 pmSFO San Francisco-LHR London Heathrow

22h 20m1 stop Lisbon Humberto Delgado

7:50 pm - 2:30 pmLHR London Heathrow-SFO San Francisco

26h 40m1 stop Lisbon Humberto Delgado

$776TAP AIR PORTUGAL

Wed, Aug 12 - Wed, Sep 9

4:35 pm - 6:50 pmSFO San Francisco-LHR London Heathrow

18h 15m1 stop Lisbon Humberto Delgado

6:45 pm - 2:30 pmLHR London Heathrow-SFO San Francisco

27h 45m1 stop Lisbon Humberto Delgado

$776TAP AIR PORTUGAL

Mon, Aug 10 - Wed, Sep 2

4:30 pm - 2:40 pmSFO San Francisco-LGW London Gatwick

14h 10m1 stop Frankfurt am Main

10:20 am - 2:30 pmLGW London Gatwick-SFO San Francisco

36h 10m1 stop Frankfurt am Main

$823Condor

Tue, Aug 11 - Wed, Sep 2

10:25 pm - 8:45 pmLAX Los Angeles-LHR London Heathrow

14h 20m1 stop New York John F Kennedy Intl

11:55 am - 9:05 pmLHR London Heathrow-LAX Los Angeles

17h 10m1 stop New York John F Kennedy Intl

$895JetBlue

Tue, Aug 11 - Thu, Sep 10

8:35 pm - 8:45 pmLAX Los Angeles-LHR London Heathrow

16h 10m1 stop New York John F Kennedy Intl

11:55 am - 9:08 pmLHR London Heathrow-LAX Los Angeles

17h 13m1 stop New York John F Kennedy Intl

$895JetBlue

Mon, Aug 10 - Fri, Aug 28

7:10 pm - 6:30 pmLAX Los Angeles-LHR London Heathrow

15h 20m1 stop Kastrup Copenhagen

10:20 am - 4:50 pmLHR London Heathrow-LAX Los Angeles

14h 30m1 stop Kastrup Copenhagen

$938Scandinavian Airlines

Mon, Aug 10 - Fri, Aug 28

7:10 pm - 6:30 pmLAX Los Angeles-LHR London Heathrow

15h 20m1 stop Kastrup Copenhagen

10:20 am - 4:50 pmLHR London Heathrow-LAX Los Angeles

14h 30m1 stop Kastrup Copenhagen

$938Scandinavian Airlines

Mon, Aug 10 - Wed, Aug 19

5:30 pm - 5:05 pmLAX Los Angeles-LHR London Heathrow

15h 35m1 stop Munich Franz Josef Strauss

9:30 am - 4:20 pmLHR London Heathrow-LAX Los Angeles

14h 50m1 stop Frankfurt am Main

$948Lufthansa

Useful Info

Low season	January
High season	June
Cheapest flight	$285

Best time to beat the crowds with an average 14% drop in price.

Most popular time to fly with an average 43% increase in price.

Flight from Ontario 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?
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.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from California to London?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London 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?
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 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?
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 from California up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight to London

Cabin class

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Cabin class types available on flights to California

First Class flights to Londonfrom $5,883

Business Class flights to Londonfrom $1,441

Premium Economy Class flights to Londonfrom $1,468

Economy Class flights to Londonfrom $289

$285 Find Cheap Flights from California to London - Compare and Save

Cheap Flights from California to London

Recent round-trip flight deals from California to London

Recent one-way flight deals from California to London

Recent last minute flight deals from California to London

Recent direct flight deals from California to London

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Low season

High season

Cheapest flight

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

FAQs for booking flights from California to London

Everything you need to know for your flight to London

Cabin class types available on flights to California

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

Find direct flights for London

Flights to other popular destinations

Flights from domestic origins to London

Choose which airport to fly into in London

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