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Cheap flights from California to London, ON from C$ 343

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/5. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YXU
17 Apr — 24 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from California to London

Enter your travel dates to find the best prices.

Cheapest flights from California to London
Explore the most affordable flight options available from California to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 March 2026.

Wed 17/66:05 p.m.
SFO
-
YXU
1 stop8h 15m
WestJet
Mon 22/66:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Deal found 14/3C$ 584
Fri 1/51:15 p.m.
SAN
-
YXU
1 stop16h 38m
Air Canada
Mon 4/55:40 a.m.
YXU
-
SAN
2 stops18h 03m
Air Canada
Deal found 15/3C$ 628
Mon 1/67:30 p.m.
SFO
-
YXU
2 stops13h 13m
Air Canada
Thu 4/63:30 p.m.
YXU
-
SFO
1 stop8h 40m
Air Canada
Deal found 18/3C$ 641
Fri 1/51:00 p.m.
SFO
-
YXU
1 stop13h 20m
WestJet
Tue 5/56:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Deal found 15/3C$ 655
Mon 1/66:05 p.m.
SFO
-
YXU
1 stop8h 15m
WestJet
Thu 4/66:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Deal found 18/3C$ 659
Wed 29/46:45 p.m.
SFO
-
YXU
2 stops31h 35m
Multiple Airlines
Wed 6/55:55 p.m.
YXU
-
SFO
1 stop31h 00m
Multiple Airlines
Deal found 15/3C$ 680
Sat 11/76:05 p.m.
SFO
-
YXU
1 stop8h 15m
WestJet
Tue 14/76:10 a.m.
YXU
-
SFO
1 stop8h 50m
WestJet
Deal found 14/3C$ 689
Fri 1/59:08 p.m.
SFO
-
YXU
2 stops17h 25m
Air Canada
Tue 5/55:40 a.m.
YXU
-
SFO
1 stop8h 10m
Air Canada
Deal found 15/3C$ 693
Mon 22/63:30 p.m.
SAN
-
YXU
1 stop10h 50m
WestJet
Mon 29/66:10 a.m.
YXU
-
SAN
1 stop11h 00m
WestJet
Deal found 15/3C$ 721
Fri 1/53:30 p.m.
SAN
-
YXU
1 stop10h 50m
WestJet
Mon 4/56:10 a.m.
YXU
-
SAN
1 stop11h 00m
WestJet
Deal found 15/3C$ 730
Fri 1/59:19 a.m.
SAN
-
YXU
2 stops17h 01m
Multiple Airlines
Fri 8/55:55 p.m.
YXU
-
SAN
1 stop23h 15m
Multiple Airlines
Deal found 17/3C$ 803
Fri 7/83:30 p.m.
SAN
-
YXU
1 stop10h 50m
WestJet
Mon 10/86:10 a.m.
YXU
-
SAN
1 stop11h 00m
WestJet
Deal found 16/3C$ 807

Find flight deals from California to London

Keep the following information in mind while searching for California to London flight deals. Data was last updated 18 March 2026.

Round-trip from

C$ 584

One-way from

C$ 343
WestJet
  • WestJet
  • 17/6-22/6
  • 2 total stops
  • 17h 05m total
  • California to London
Search Deals
Air Canada
  • Air Canada
  • 2/5
  • 2 total stops
  • 9h 33m total
  • California to London
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from California to London that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 18 March 2026.
Use the filters below to find and compare flights from California to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Fri 1/5

1:15 p.m.-8:53 a.m.

1 stop16h 38m

London

Mon 4/5

5:40 a.m.-8:43 p.m.

2 stops18h 03m

C$ 628

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Mon 1/6

7:30 p.m.-11:43 a.m.

2 stops13h 13m

London

Thu 4/6

3:30 p.m.-9:10 p.m.

1 stop8h 40m

C$ 641

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Fri 1/5

6:00 a.m.-5:20 a.m.

1 stop20h 20m

London

Tue 5/5

6:10 a.m.-12:00 p.m.

1 stop8h 50m

C$ 655
Quickest round-trip

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Mon 1/6

6:05 p.m.-5:20 a.m.

1 stop8h 15m

London

Thu 4/6

6:10 a.m.-12:00 p.m.

1 stop8h 50m

C$ 659

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Fri 1/5

9:08 p.m.-5:33 p.m.

2 stops17h 25m

London

Tue 5/5

9:30 a.m.-6:38 p.m.

2 stops12h 08m

C$ 714

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Mon 22/6

3:30 p.m.-5:20 a.m.

1 stop10h 50m

London

Mon 29/6

6:10 a.m.-2:10 p.m.

1 stop11h 00m

C$ 721

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Fri 1/5

3:30 p.m.-5:20 a.m.

1 stop10h 50m

London

Mon 4/5

6:10 a.m.-2:10 p.m.

1 stop11h 00m

C$ 730

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Wed 17/6

6:05 p.m.-1:50 p.m.

2 stops40h 45m

London

Mon 22/6

6:10 a.m.-12:00 p.m.

1 stop8h 50m

C$ 757

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Fri 1/5

9:08 p.m.-5:33 p.m.

2 stops17h 25m

London

Tue 5/5

5:40 a.m.-12:40 p.m.

1 stop10h 00m

C$ 766

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Fri 1/5

9:19 a.m.-5:20 a.m.

2 stops17h 01m

London

Fri 8/5

5:55 p.m.-2:10 p.m.

1 stop23h 15m

C$ 803

Flights are sorted by cheapest round-trip flights first.

Deals found on 18/3

Showing 1-10 of 23 resultsSorted by cheapest first
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Best time to book a flight from California to London

Have a flexible travel schedule? Discover the best time to fly to London from California with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from California to London

What is the cheapest month to book a flight from California to London, Ontario?

Currently, June is the cheapest month in which you can book a flight from California to London, Ontario (average of C$ 107). Flying from California to London, Ontario in December is currently the most expensive (average of C$ 211). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from California to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to London from California?

    London (YXU) is the airport you will fly into if you book a flight from California to London. It is only a 8.6 km journey from London (YXU) to London’s city centre.

  • How long is the flight from California to London, Ontario?

    Air Canada, WestJet, and United Airlines can get you from California to London, Ontario in just under 16h 38m. Your travel time can differ by up to 3h 42m. The distance from California to London, Ontario is about 3331 km. Both multi-stop and direct flights can be found to your destination and back.

  • What are the most popular routes from California to London, Ontario?

    The most popular route from California to London, Ontario is San Jose - London. You may also consider San Diego - London or San Francisco - London.

  • Can I find deals for flights from California to London that include hotel bookings?

    Yes. In addition to deals on California to London flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from California to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from California to London.

  • Can I find deals for business class flights from California to London?

    Yes. Cheapflights offers flight deals from California to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from California to London, Ontario?

    Currently, June is the cheapest month in which you can book a flight from California to London, Ontario (average of C$ 107). Flying from California to London, Ontario in December is currently the most expensive (average of C$ 211). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Port Stanley
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How does Cheapflights help users find flights from California to London?

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Yes, we can. To see specific flights from California to London with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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