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, Oct 2 - Mon, Oct 12

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

$618Royal Air Maroc

Fri, Oct 2 - Mon, Oct 12

10:20 am - 5:45 pmLAX Los Angeles-STN London Stansted

23h 25m2 stops Casablanca Mohamed V Barcelona-El Prat

6:40 am - 8:20 amSTN London Stansted-LAX Los Angeles

33h 40m2 stops Barcelona-El Prat Casablanca Mohamed V

$648Multiple Airlines

Fri, Oct 2 - Mon, Oct 12

10:20 am - 5:45 pmLAX Los Angeles-LHR London Heathrow

23h 25m1 stop Casablanca Mohamed V

6:10 pm - 8:20 amLHR London Heathrow-LAX Los Angeles

22h 10m1 stop Casablanca Mohamed V

$661Royal Air Maroc

Sun, Jan 10 - Sun, Jan 17

8:25 pm - 9:05 pmLAX Los Angeles-LHR London Heathrow

16h 40m1 stop Dublin

12:10 pm - 6:40 pmLHR London Heathrow-LAX Los Angeles

14h 30m1 stop Dublin

$669Aer Lingus

Sun, Jan 10 - Sun, Jan 17

10:05 pm - 4:30 pmLAX Los Angeles-LHR London Heathrow

10h 25mnonstop

8:55 am - 4:35 pmLHR London Heathrow-LAX Los Angeles

15h 40m1 stop Paris Charles de Gaulle

$688Virgin Atlantic

Sun, Nov 8 - Fri, Nov 13

5:20 pm - 4:50 pmSFO San Francisco-LHR London Heathrow

15h 30m1 stop Dublin

9:50 am - 3:35 pmLHR London Heathrow-SFO San Francisco

13h 45m1 stop Dublin

$693Aer Lingus

Sun, Jan 10 - Sun, Jan 17

10:05 pm - 4:30 pmLAX Los Angeles-LHR London Heathrow

10h 25mnonstop

5:05 pm - 8:15 pmLHR London Heathrow-LAX Los Angeles

11h 10mnonstop

$694Virgin Atlantic

Mon, Jan 18 - Mon, Jan 25

12:30 pm - 11:50 amLAX Los Angeles-LHR London Heathrow

15h 20m1 stop Vancouver Intl

8:05 pm - 4:35 pmLHR London Heathrow-LAX Los Angeles

28h 30m1 stop Zurich

$694Multiple Airlines

Wed, Jan 13 - Wed, Jan 27

7:25 pm - 5:05 pmSFO San Francisco-LCY London City

13h 40m1 stop Zurich

9:15 am - 4:30 pmLCY London City-SFO San Francisco

15h 15m1 stop Zurich

$710SWISS

Sun, Nov 15 - Sun, Dec 6

7:25 pm - 7:15 pmSFO San Francisco-LHR London Heathrow

15h 50m1 stop Zurich

6:00 am - 4:30 pmLHR London Heathrow-SFO San Francisco

18h 30m1 stop Zurich

$728SWISS

Recent last minute flight deals from California to London

Sun, Sep 20 - Tue, Oct 6

6:00 pm - 3:35 pmONT Ontario-LHR London Heathrow

13h 35m1 stop Seattle/Tacoma Intl

11:40 am - 10:43 pmLHR London Heathrow-ONT Ontario

19h 03m1 stop Seattle/Tacoma Intl

$737Virgin Atlantic

Mon, Sep 21 - Tue, Oct 6

6:00 pm - 3:35 pmONT Ontario-LHR London Heathrow

13h 35m1 stop Seattle/Tacoma Intl

11:40 am - 10:43 pmLHR London Heathrow-ONT Ontario

19h 03m1 stop Seattle/Tacoma Intl

$738Virgin Atlantic

Tue, Sep 22 - Fri, Sep 25

3:14 pm - 3:05 pmONT Ontario-LHR London Heathrow

15h 51m1 stop Seattle/Tacoma Intl

5:00 pm - 11:24 pmLHR London Heathrow-ONT Ontario

14h 24m1 stop Seattle/Tacoma Intl

$746Alaska Airlines

Tue, Sep 22 - Thu, Sep 24

3:14 pm - 3:05 pmONT Ontario-LHR London Heathrow

15h 51m1 stop Seattle/Tacoma Intl

5:00 pm - 11:24 pmLHR London Heathrow-ONT Ontario

14h 24m1 stop Seattle/Tacoma Intl

$746Alaska Airlines

Mon, Sep 21 - Thu, Oct 1

1:04 pm - 10:00 amONT Ontario-LHR London Heathrow

12h 56m1 stop Salt Lake City

10:55 am - 4:35 pmLHR London Heathrow-ONT Ontario

13h 40m1 stop Salt Lake City

$746KLM

Wed, Sep 23 - Wed, Sep 30

12:50 pm - 7:25 amSFO San Francisco-LHR London Heathrow

10h 35mnonstop

10:35 am - 1:35 pmLHR London Heathrow-SFO San Francisco

11h 00mnonstop

$751Multiple Airlines

Sun, Sep 20 - Mon, Nov 2

3:15 pm - 9:40 amSFO San Francisco-LHR London Heathrow

34h 25m1 stop Rome Fiumicino

4:30 pm - 1:10 pmLHR London Heathrow-SFO San Francisco

28h 40m1 stop Rome Fiumicino

$752ITA Airways

Wed, Sep 23 - Tue, Sep 29

2:10 pm - 7:55 amSFO San Francisco-LHR London Heathrow

33h 45m2 stops Las Vegas Harry Reid Intl Zurich

5:15 pm - 3:18 pmLHR London Heathrow-SFO San Francisco

54h 03m2 stops Zurich Las Vegas Harry Reid Intl

$758SWISS

Tue, Sep 22 - Tue, Oct 20

7:35 pm - 5:25 pmSFO San Francisco-LCY London City

13h 50m1 stop Zurich

6:05 pm - 4:15 pmLCY London City-SFO San Francisco

30h 10m1 stop Zurich

$766SWISS

Mon, Sep 21 - Tue, Oct 6

1:45 pm - 4:40 pmSFO San Francisco-LCY London City

18h 55m1 stop Amsterdam Schiphol

8:15 pm - 11:45 amLCY London City-SFO San Francisco

23h 30m1 stop Amsterdam Schiphol

$776KLM

Recent direct flight deals from California to London

Sun, Jan 10 - Sun, Jan 17

10:05 pm - 4:30 pmLAX Los Angeles-LHR London Heathrow

10h 25mnonstop

5:05 pm - 8:15 pmLHR London Heathrow-LAX Los Angeles

11h 10mnonstop

$694Virgin Atlantic

Wed, Jan 13 - Wed, Jan 27

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

$722British Airways

Fri, Oct 16 - Wed, Oct 21

5:55 pm - 12:15 pmSFO San Francisco-LHR London Heathrow

10h 20mnonstop

12:45 pm - 3:55 pmLHR London Heathrow-SFO San Francisco

11h 10mnonstop

$756Virgin Atlantic

Wed, Oct 28 - Mon, Nov 2

9:35 pm - 3:10 pmSFO San Francisco-LHR London Heathrow

10h 35mnonstop

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

11h 10mnonstop

$758British Airways

Sun, Jan 10 - Wed, Jan 20

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

10h 35mnonstop

1:45 pm - 4:55 pmLHR London Heathrow-SFO San Francisco

11h 10mnonstop

$760Austrian Airlines

Wed, Jan 13 - Thu, Jan 21

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

10h 35mnonstop

1:45 pm - 4:55 pmLHR London Heathrow-SFO San Francisco

11h 10mnonstop

$760Multiple Airlines

Tue, Nov 17 - Wed, Dec 2

4:40 pm - 10:55 amSFO San Francisco-LHR London Heathrow

10h 15mnonstop

11:50 am - 2:50 pmLHR London Heathrow-SFO San Francisco

11h 00mnonstop

$761Delta

Mon, Nov 16 - Tue, Dec 1

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

$766Multiple Airlines

Wed, Dec 9 - Mon, Jan 11

4:40 pm - 10:55 amSFO San Francisco-LHR London Heathrow

10h 15mnonstop

11:50 am - 2:50 pmLHR London Heathrow-SFO San Francisco

11h 00mnonstop

$780Delta

Wed, Nov 4 - Fri, Nov 20

12:50 pm - 7:25 amSFO San Francisco-LHR London Heathrow

10h 35mnonstop

10:05 am - 1:20 pmLHR London Heathrow-SFO San Francisco

11h 15mnonstop

$986Austrian Airlines

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 38% increase in price.

Flight from San Francisco to London Stansted 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

Slough

Hayes

Richmond

Wembley

Luton

Eastbourne

Ilford

Crawley

Guildford

Colchester

Ipswich

Bedford

Kingston upon Thames

Watford

Newbury

Twickenham

Harrow

St. Albans

Maidenhead

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$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

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More options for your flight to London

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

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