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.

$299 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

Fri, Jan 22 - Mon, Jan 25

7:30 pm - 2:35 pmLAX Los Angeles-LHR London Heathrow

35h 05m2 stops Kastrup Copenhagen Oslo Gardermoen

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

14h 40m1 stop Kastrup Copenhagen

$590Scandinavian Airlines

Fri, Jan 22 - Mon, Jan 25

7:30 pm - 9:35 amLAX Los Angeles-LHR London Heathrow

30h 05m2 stops Kastrup Copenhagen Oslo Gardermoen

6:40 am - 5:00 pmLHR London Heathrow-LAX Los Angeles

18h 20m2 stops Stockholm Arlanda Kastrup Copenhagen

$591Scandinavian Airlines

Tue, Sep 8 - Mon, Sep 28

10:20 am - 6:20 amLAX Los Angeles-STN London Stansted

36h 00m1 stop Casablanca Mohamed V

7:25 am - 8:20 amSTN London Stansted-LAX Los Angeles

32h 55m1 stop Casablanca Mohamed V

$598Royal Air Maroc

Fri, Sep 11 - Mon, Sep 14

10:20 am - 6:20 amLAX Los Angeles-STN London Stansted

36h 00m1 stop Casablanca Mohamed V

7:25 am - 8:20 amSTN London Stansted-LAX Los Angeles

32h 55m1 stop Casablanca Mohamed V

$604Royal Air Maroc

Tue, Jan 5 - Tue, Jan 12

8:30 am - 7:10 amLAX Los Angeles-LHR London Heathrow

14h 40m1 stop Montreal Pierre Elliott Trudeau Intl

2:30 pm - 10:31 pmLHR London Heathrow-LAX Los Angeles

16h 01m1 stop Vancouver Intl

$628Air Canada

Mon, Sep 21 - Tue, Oct 6

4:30 pm - 5:45 pmSFO San Francisco-LHR London Heathrow

17h 15m1 stop Lisbon Humberto Delgado

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

32h 50m1 stop Lisbon Humberto Delgado

$637TAP AIR PORTUGAL

Mon, Sep 21 - Tue, Oct 6

4:30 pm - 10:00 pmSFO San Francisco-LHR London Heathrow

21h 30m1 stop Lisbon Humberto Delgado

6:45 pm - 2:35 pmLHR London Heathrow-SFO San Francisco

27h 50m1 stop Lisbon Humberto Delgado

$646TAP AIR PORTUGAL

Tue, Feb 2 - Wed, Feb 24

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

10h 35mnonstop

3:10 pm - 6:35 pmLHR London Heathrow-LAX Los Angeles

11h 25mnonstop

$680British Airways

Mon, Jan 11 - Tue, Jan 19

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

10h 35mnonstop

10:05 am - 1:25 pmLHR London Heathrow-LAX Los Angeles

11h 20mnonstop

$699British Airways

Tue, Dec 15 - Wed, Dec 30

11:30 am - 11:20 amLAX Los Angeles-LHR London Heathrow

15h 50m1 stop Toronto Pearson Intl

1:00 pm - 9:39 pmLHR London Heathrow-LAX Los Angeles

16h 39m1 stop Montreal Pierre Elliott Trudeau Intl

$747Air Canada

Recent last minute flight deals from California to London

Wed, Aug 26 - Tue, Sep 29

4:35 pm - 11:00 amSFO San Francisco-LHR London Heathrow

34h 25m1 stop Lisbon Humberto Delgado

6:45 pm - 2:35 pmLHR London Heathrow-SFO San Francisco

27h 50m1 stop Lisbon Humberto Delgado

$807TAP AIR PORTUGAL

Wed, Aug 26 - Mon, Sep 28

4:35 pm - 11:00 amSFO San Francisco-LHR London Heathrow

34h 25m1 stop Lisbon Humberto Delgado

7:50 pm - 1:35 pmLHR London Heathrow-SFO San Francisco

25h 45m1 stop Lisbon Humberto Delgado

$810TAP AIR PORTUGAL

Mon, Aug 24 - Tue, Sep 1

8:55 pm - 7:20 amLAX Los Angeles-STN London Stansted

26h 25m1 stop Barcelona-El Prat

10:00 pm - 6:25 pmSTN London Stansted-LAX Los Angeles

28h 25m1 stop Dublin

$821Multiple Airlines

Tue, Aug 25 - Tue, Oct 13

4:20 pm - 8:45 pmLAX Los Angeles-LHR London Heathrow

20h 25m1 stop New York John F Kennedy Intl

7:50 am - 4:05 pmLHR London Heathrow-LAX Los Angeles

16h 15m1 stop Madrid Barajas

$827Multiple Airlines

Sat, Aug 22 - Mon, Aug 31

4:20 pm - 9:30 amLAX Los Angeles-LHR London Heathrow

33h 10m1 stop New York John F Kennedy Intl

8:15 am - 12:52 amLHR London Heathrow-LAX Los Angeles

24h 37m1 stop New York John F Kennedy Intl

$902JetBlue

Sat, Aug 22 - Sat, Aug 29

2:20 pm - 9:30 amLAX Los Angeles-LHR London Heathrow

35h 10m1 stop New York John F Kennedy Intl

8:15 am - 10:48 pmLHR London Heathrow-LAX Los Angeles

22h 33m1 stop New York John F Kennedy Intl

$902JetBlue

Tue, Aug 25 - Mon, Sep 7

7:35 pm - 7:20 pmLAX Los Angeles-LHR London Heathrow

15h 45m1 stop Zurich

6:40 pm - 4:30 pmLHR London Heathrow-LAX Los Angeles

29h 50m1 stop Zurich

$921SWISS

Sun, Aug 23 - Sun, Aug 30

7:10 pm - 9:40 pmLAX Los Angeles-LHR London Heathrow

18h 30m1 stop Kastrup Copenhagen

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

14h 30m1 stop Kastrup Copenhagen

$929Scandinavian Airlines

Sun, Aug 23 - Sun, Aug 30

7:10 pm - 9:40 pmLAX Los Angeles-LHR London Heathrow

18h 30m1 stop Kastrup Copenhagen

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

14h 30m1 stop Kastrup Copenhagen

$930Scandinavian Airlines

Mon, Aug 24 - Mon, Sep 7

7:35 pm - 9:30 pmLAX Los Angeles-LHR London Heathrow

17h 55m2 stops Zurich Geneva Geneve-Cointrin

6:40 pm - 4:30 pmLHR London Heathrow-LAX Los Angeles

29h 50m1 stop Zurich

$962SWISS

Useful Info

Low season	January
High season	June
Cheapest flight	$299

Best time to beat the crowds with an average 22% drop in price.

Most popular time to fly with an average 39% 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?
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.

Hounslow

Hayes

Slough

Richmond

Wembley

Luton

Eastbourne

Ilford

Crawley

Bedford

Watford

Guildford

Colchester

Kingston upon Thames

Ipswich

Twickenham

St. Albans

Harrow

Newbury

Maidenhead

Everything you need to know for your flight to London

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Cabin class types available on flights to California

First Class flights to Londonfrom $5,856

Business Class flights to Londonfrom $1,441

Premium Economy Class flights to Londonfrom $1,509

Economy Class flights to Londonfrom $289

$299 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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Flights from California to London: the best tips from KAYAK users

FAQs for booking flights from California to London

Traveling to a place near 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

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Choose which airport to fly into in London

Find deals for your return flight