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

Mon, Dec 7 - Tue, Dec 15

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

21h 00m1 stop Lisbon Humberto Delgado

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

28h 15m1 stop Lisbon Humberto Delgado

$734TAP AIR PORTUGAL

Sat, Dec 5 - Tue, Dec 15

4:35 pm - 10:40 pmSFO San Francisco-LHR London Heathrow

22h 05m1 stop Lisbon Humberto Delgado

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

28h 15m1 stop Lisbon Humberto Delgado

$734TAP AIR PORTUGAL

Sat, Feb 6 - Thu, Feb 11

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

15h 15m1 stop Kastrup Copenhagen

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

16h 10m1 stop Kastrup Copenhagen

$736Scandinavian Airlines

Thu, Jan 21 - Fri, Jan 29

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

15h 15m1 stop Kastrup Copenhagen

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

16h 10m1 stop Kastrup Copenhagen

$736Scandinavian Airlines

Wed, Feb 17 - Fri, Feb 19

2:40 pm - 11:50 amSFO San Francisco-LHR London Heathrow

13h 10m1 stop Vancouver Intl

9:00 am - 4:30 pmLHR London Heathrow-SFO San Francisco

15h 30m1 stop Zurich

$737United Airlines

Tue, Feb 16 - Thu, Feb 18

4:40 pm - 11:15 amSFO San Francisco-LHR London Heathrow

10h 35mnonstop

9:00 am - 4:30 pmLHR London Heathrow-SFO San Francisco

15h 30m1 stop Zurich

$737United Airlines

Tue, Apr 13 - Thu, Apr 15

2:00 pm - 11:50 amSFO San Francisco-LHR London Heathrow

13h 50m1 stop Toronto Pearson Intl

8:45 am - 4:15 pmLHR London Heathrow-SFO San Francisco

15h 30m1 stop Zurich

$739Multiple Airlines

Fri, Dec 4 - Wed, Dec 9

11:32 pm - 9:40 pmSFO San Francisco-LHR London Heathrow

14h 08m1 stop New York John F Kennedy Intl

9:00 am - 4:30 pmLHR London Heathrow-SFO San Francisco

15h 30m1 stop Zurich

$744Multiple Airlines

Tue, Nov 17 - 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

$763Royal Air Maroc

Fri, Nov 27 - Thu, Dec 3

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

$767Royal Air Maroc

Recent last minute flight deals from California to London

Wed, Nov 4 - Fri, Nov 13

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

21h 00m1 stop Lisbon Humberto Delgado

6:00 am - 4:05 pmLHR London Heathrow-SFO San Francisco

18h 05m1 stop Lisbon Humberto Delgado

$744TAP AIR PORTUGAL

Mon, Nov 2 - Sun, Nov 8

4:35 pm - 10:40 pmSFO San Francisco-LHR London Heathrow

22h 05m1 stop Lisbon Humberto Delgado

6:30 pm - 2:25 pmLHR London Heathrow-SFO San Francisco

27h 55m1 stop Lisbon Humberto Delgado

$756TAP AIR PORTUGAL

Tue, Nov 3 - Thu, Nov 26

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

$762Royal Air Maroc

Tue, Nov 3 - Tue, Nov 17

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

15h 15m1 stop Kastrup Copenhagen

5:00 pm - 2:50 pmLHR London Heathrow-SFO San Francisco

29h 50m1 stop Kastrup Copenhagen

$770Scandinavian Airlines

Mon, Nov 2 - 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

$770Scandinavian Airlines

Thu, Nov 5 - Tue, Nov 10

12:24 pm - 8:55 pmSFO San Francisco-LHR London Heathrow

24h 31m1 stop New York John F Kennedy Intl

7:25 am - 11:54 pmLHR London Heathrow-SFO San Francisco

24h 29m1 stop New York John F Kennedy Intl

$775JetBlue

Tue, Nov 3 - Sat, Nov 7

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

28h 50m2 stops Casablanca Mohamed V Madrid Barajas

12:40 pm - 7:20 amLGW London Gatwick-LAX Los Angeles

26h 40m2 stops Madrid Barajas Casablanca Mohamed V

$787Multiple Airlines

Mon, Nov 2 - Sun, Nov 8

7:30 pm - 4:20 pmLAX Los Angeles-LHR London Heathrow

36h 50m1 stop Istanbul

2:50 pm - 9:20 pmLHR London Heathrow-LAX Los Angeles

14h 30m1 stop Calgary

$799Multiple Airlines

Thu, Nov 5 - Sat, Nov 14

12:24 pm - 8:55 pmSFO San Francisco-LHR London Heathrow

24h 31m1 stop New York John F Kennedy Intl

12:20 pm - 10:42 pmLHR London Heathrow-SFO San Francisco

18h 22m1 stop New York John F Kennedy Intl

$810JetBlue

Tue, Nov 3 - Fri, Nov 13

7:30 pm - 5:50 pmLAX Los Angeles-LGW London Gatwick

14h 20m1 stop Zurich

9:00 am - 4:35 pmLGW London Gatwick-LAX Los Angeles

15h 35m1 stop Zurich

$903SWISS

Useful Info

Low season	January
High season	June
Cheapest flight	$270

Best time to beat the crowds with an average 20% drop in price.

Most popular time to fly with an average 35% 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

Richmond

Slough

Wembley

Luton

Eastbourne

Ilford

Kingston upon Thames

Guildford

Crawley

Bedford

Watford

Harrow

Twickenham

Ipswich

Folkestone

St. Albans

Colchester

Woodbridge

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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

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

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