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.

$223 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

Recent round-trip flight deals from California to London

Mon, Jan 18 - Thu, Jan 21

6:30 am - 9:52 pmSFO San Francisco-YXU London

12h 22m2 stops Vancouver Intl Toronto Pearson Intl

3:20 pm - 9:20 pmYXU London-SFO San Francisco

9h 00m1 stop Toronto Pearson Intl

$410Air Canada

Mon, Jan 18 - Thu, Jan 21

6:30 am - 9:52 pmSFO San Francisco-YXU London

12h 22m2 stops Vancouver Intl Toronto Pearson Intl

5:30 am - 1:51 pmYXU London-SFO San Francisco

11h 21m2 stops Toronto Pearson Intl Vancouver Intl

$415Air Canada

Mon, Jan 18 - Thu, Jan 21

12:00 pm - 8:37 amSFO San Francisco-YXU London

17h 37m1 stop Toronto Pearson Intl

9:15 am - 3:40 pmYXU London-SFO San Francisco

9h 25m1 stop Toronto Pearson Intl

$428Air Canada

Mon, Dec 21 - Thu, Jan 7

3:30 pm - 8:37 amLAX Los Angeles-YXU London

14h 07m1 stop Toronto Pearson Intl

3:20 pm - 9:34 pmYXU London-LAX Los Angeles

9h 14m1 stop Toronto Pearson Intl

$459Air Canada

Wed, Nov 11 - Mon, Nov 16

5:00 pm - 5:35 amLAX Los Angeles-YXU London

9h 35m1 stop Calgary

6:40 am - 9:20 pmYXU London-LAX Los Angeles

17h 40m1 stop Calgary

$490WestJet

Thu, Nov 26 - Thu, Dec 3

5:00 pm - 5:35 amLAX Los Angeles-YXU London

9h 35m1 stop Calgary

10:00 am - 11:51 pmYXU London-LAX Los Angeles

40h 51m2 stops Orlando Houston George Bush Intcntl

$529Multiple Airlines

Mon, Jan 18 - Thu, Jan 21

4:40 pm - 5:35 amSFO San Francisco-YXU London

9h 55m1 stop Calgary

6:40 am - 3:50 pmYXU London-SFO San Francisco

12h 10m1 stop Calgary

$539WestJet

Wed, Dec 9 - Thu, Dec 17

12:12 am - 5:00 pmLAX Los Angeles-YXU London

13h 48m2 stops Atlanta Hartsfield-Jackson Orlando

8:20 am - 9:02 pmYXU London-LAX Los Angeles

15h 42m1 stop Orlando

$539Multiple Airlines

Fri, Dec 11 - Tue, Dec 15

12:25 pm - 5:35 amPSP Palm Springs-YXU London

14h 10m2 stops Vancouver Intl Calgary

6:40 am - 11:35 amYXU London-PSP Palm Springs

31h 55m2 stops Calgary Vancouver Intl

$565WestJet

Wed, Dec 9 - Thu, Dec 17

12:10 am - 2:42 pmSFO San Francisco-YXU London

11h 32m2 stops Chicago O'Hare Intl Toronto Pearson Intl

5:30 am - 11:10 amYXU London-SFO San Francisco

8h 40m1 stop Toronto Pearson Intl

$685United Airlines

Recent last minute flight deals from California to London

Wed, Nov 4 - Mon, Nov 9

8:10 am - 8:27 pmSFO San Francisco-YXU London

9h 17m1 stop Toronto Pearson Intl

9:15 am - 3:40 pmYXU London-SFO San Francisco

9h 25m1 stop Toronto Pearson Intl

$940Air Canada

Wed, Nov 4 - Mon, Nov 9

6:30 am - 8:27 pmSFO San Francisco-YXU London

10h 57m2 stops Vancouver Intl Toronto Pearson Intl

3:25 pm - 9:30 pmYXU London-SFO San Francisco