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.

$270 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

Sat, Apr 17 - Thu, Apr 29

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

18h 15m2 stops Kastrup Copenhagen Oslo Gardermoen

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

16h 00m1 stop Kastrup Copenhagen

$732Scandinavian Airlines

Mon, Apr 19 - Sat, May 1

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

18h 15m2 stops Kastrup Copenhagen Oslo Gardermoen

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

16h 00m1 stop Kastrup Copenhagen

$732Scandinavian 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, Nov 27 - Thu, Dec 3

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

$735Royal Air Maroc

Tue, Jan 12 - Wed, Jan 20

5:10 pm - 10:40 pmLAX Los Angeles-LHR London Heathrow

21h 30m1 stop Lisbon Humberto Delgado

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

28h 45m1 stop Lisbon Humberto Delgado

$736TAP AIR PORTUGAL

Sun, Dec 6 - Sat, Dec 12

9:20 am - 2:55 pmLAX Los Angeles-LGW London Gatwick

21h 35m2 stops Casablanca Mohamed V Barcelona-El Prat

10:00 am - 7:20 amLGW London Gatwick-LAX Los Angeles

29h 20m2 stops Barcelona-El Prat Casablanca Mohamed V

$736Multiple Airlines

Wed, Jan 20 - Mon, Jan 25

11:35 am - 9:30 amLAX Los Angeles-LHR London Heathrow

13h 55m1 stop New York John F Kennedy Intl

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

22h 10m1 stop Casablanca Mohamed V

$736Multiple Airlines

Tue, Dec 1 - Wed, Dec 9

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

$737TAP AIR PORTUGAL

Fri, Dec 11 - Mon, Jan 18

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

$739Royal Air Maroc

Sun, Feb 21 - Tue, Mar 2

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

$753British Airways

Recent last minute flight deals from California to London

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

Sun, Nov 15 - Mon, Nov 23

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

$739Royal Air Maroc

Fri, Nov 13 - Tue, Nov 17

7:15 pm - 9:35 pmSFO San Francisco-LHR London Heathrow

18h 20m1 stop Lisbon Humberto Delgado

1:40 pm - 2:45 pmLHR London Heathrow-SFO San Francisco

33h 05m1 stop Lisbon Humberto Delgado

$751TAP AIR PORTUGAL

Fri, Nov 13 - Sun, Nov 22

7:15 pm - 6:55 pmSFO San Francisco-LHR London Heathrow

15h 40m1 stop Lisbon Humberto Delgado

1:40 pm - 2:25 pmLHR London Heathrow-SFO San Francisco

32h 45m1 stop Lisbon Humberto Delgado

$764TAP AIR PORTUGAL

Sun, Nov 15 - Thu, Nov 19

9:20 am - 7:15 pmLAX Los Angeles-LGW London Gatwick

25h 55m2 stops Casablanca Mohamed V Amsterdam Schiphol

6:00 am - 7:20 amLGW London Gatwick-LAX Los Angeles

33h 20m2 stops Amsterdam Schiphol Casablanca Mohamed V

$765Multiple Airlines

Sun, Nov 15 - Mon, Nov 23

4:45 pm - 9:40 pmSFO San Francisco-LHR London Heathrow

20h 55m1 stop Kastrup Copenhagen

6:40 am - 2:50 pmLHR London Heathrow-SFO San Francisco

16h 10m1 stop Kastrup Copenhagen

$779Scandinavian Airlines

Sun, Nov 15 - Thu, Nov 26

4:45 pm - 9:40 pmSFO San Francisco-LHR London Heathrow

20h 55m1 stop Kastrup Copenhagen

6:40 am - 2:50 pmLHR London Heathrow-SFO San Francisco

16h 10m1 stop Kastrup Copenhagen

$779Scandinavian Airlines

Fri, Nov 13 - Sun, Nov 22

11:40 am - 9:30 amLAX Los Angeles-LHR London Heathrow

13h 50m1 stop New York John F Kennedy Intl

7:45 am - 12:20 amLHR London Heathrow-LAX Los Angeles

24h 35m1 stop New York John F Kennedy Intl

$809JetBlue

Sat, Nov 14 - Sun, Nov 22

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

16h 50m1 stop Boston Logan Intl

7:45 am - 10:52 pmLHR London Heathrow-LAX Los Angeles

23h 07m1 stop New York John F Kennedy Intl

$809JetBlue

Tue, Nov 17 - Mon, Dec 14

5:10 pm - 5:30 pmLAX Los Angeles-LHR London Heathrow

16h 20m1 stop Lisbon Humberto Delgado

9:55 am - 7:20 amLHR London Heathrow-LAX Los Angeles

29h 25m2 stops Barcelona-El Prat Casablanca Mohamed V

$852Multiple Airlines

Useful Info

Low season	January
High season	June
Cheapest flight	$270

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

Most popular time to fly with an average 34% increase in price.

Flight from San Diego to London Heathrow Airport

UlisesFlew with American Airlines-Nov 2026

Make sure you get your UK ETA even if you are only connecting, in case there are any flight disruptions and you need to spend the night outside the 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

Ilford

Eastbourne

Kingston upon Thames

Guildford

Crawley

Bedford

Watford

Harrow

Ipswich

Folkestone

St. Albans

Colchester

Woodbridge

Maidstone

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$270 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?

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

Cabin class types available on flights to California

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