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Cheap flights from California to London, ON from C$ 264

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 16/3. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YXU
29 Jan — 5 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from California to London

Enter your travel dates to find the best prices.

Best flights from California to London
Discover carefully curated flight deals from California to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 30 December 2025.

Thu 22/110:15 a.m.SFO - YXU
2 stops17h 19mMultiple Airlines
Wed 28/15:10 a.m.YXU - SFO
1 stop8h 44mMultiple Airlines
Deal found 28/12C$ 387
Thu 22/17:30 a.m.SFO - YXU
2 stops10h 51mAir Canada
Wed 28/15:10 a.m.YXU - SFO
2 stops13h 25mAir Canada
Deal found 28/12C$ 442
Mon 20/48:45 a.m.SFO - YXU
1 stop9h 33mAir Canada
Wed 22/49:25 a.m.YXU - SFO
1 stop8h 45mAir Canada
Deal found 27/12C$ 520
Wed 21/17:30 a.m.SFO - YXU
2 stops10h 51mAir Canada
Thu 22/15:10 a.m.YXU - SFO
1 stop8h 44mAir Canada
Deal found 28/12C$ 527
Fri 13/212:00 p.m.SFO - YXU
1 stop17h 46mAir Canada
Fri 20/25:10 a.m.YXU - SFO
1 stop8h 44mAir Canada
Deal found 29/12C$ 553
Fri 15/57:59 p.m.SJC - YXU
2 stops20h 08mMultiple Airlines
Sat 30/56:00 a.m.YXU - SJC
2 stops20h 26mMultiple Airlines
Deal found 28/12C$ 813
Wed 11/26:05 p.m.SAN - YXU
2 stops11h 41mAir Canada
Wed 18/25:10 a.m.YXU - SAN
1 stop9h 43mAir Canada
Deal found 28/12C$ 714
Wed 14/16:05 p.m.SAN - YXU
2 stops11h 41mAir Canada
Sun 18/15:10 a.m.YXU - SAN
1 stop9h 43mAir Canada
Deal found 27/12C$ 714
Wed 4/39:15 a.m.SJC - YXU
2 stops18h 20mMultiple Airlines
Wed 18/38:10 p.m.YXU - SJC
2 stops40h 18mMultiple Airlines
Deal found 29/12C$ 980
Wed 4/38:50 a.m.SJC - YXU
3 stops20h 56mAir Canada
Wed 18/35:10 a.m.YXU - SJC
2 stops11h 31mAir Canada
Deal found 29/12C$ 1,033
Mon 12/18:40 a.m.SJC - YXU
2 stops9h 40mAir Canada
Thu 15/19:50 a.m.YXU - SJC
2 stops38h 06mAir Canada
Deal found 27/12C$ 1,094
Sun 1/38:50 a.m.SJC - YXU
2 stops33h 31mAir Canada
Thu 5/35:10 a.m.YXU - SJC
2 stops19h 06mAir Canada
Deal found 29/12C$ 1,343
Thu 12/28:50 a.m.SJC - YXU
2 stops20h 56mAir Canada
Thu 19/29:25 a.m.YXU - SJC
3 stops14h 40mAir Canada
Deal found 28/12C$ 1,573

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 30 December 2025.

Round-trip from

C$ 387

One-way from

C$ 264

Popular in

November

Cheapest in

May

Average price

C$ 517
Air Canada
  • Air Canada
  • 22/1-28/1
  • 3 total stops
  • 26h 03m total
  • California to London
Search Deals
Air Canada
  • Air Canada
  • 16/3
  • 1 total stop
  • 9h 51m total
  • California to London
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (C$ 183 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease (C$ 70 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 30 December 2025.
Use the filters below to find and compare flights from California to London that are best for you.

Fly from

California

Fly to

London

Route

Depart

Return

Price

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Thu 22/1

10:15 a.m.-6:34 a.m.

2 stops17h 19m

London

Wed 28/1

5:10 a.m.-10:54 a.m.

1 stop8h 44m

C$ 387

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Thu 22/1

7:30 a.m.-9:21 p.m.

2 stops10h 51m

London

Wed 28/1

5:10 a.m.-3:35 p.m.

2 stops13h 25m

C$ 442

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Mon 20/4

8:45 a.m.-9:18 p.m.

1 stop9h 33m

London

Wed 22/4

9:25 a.m.-3:10 p.m.

1 stop8h 45m

C$ 520

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Wed 21/1

7:30 a.m.-9:21 p.m.

2 stops10h 51m

London

Thu 22/1

5:10 a.m.-10:54 a.m.

1 stop8h 44m

C$ 527

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Fri 13/2

12:00 p.m.-8:46 a.m.

1 stop17h 46m

London

Fri 20/2

5:10 a.m.-10:54 a.m.

1 stop8h 44m

C$ 553

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Wed 11/2

6:05 p.m.-8:46 a.m.

2 stops11h 41m

London

Wed 18/2

5:10 a.m.-11:53 a.m.

1 stop9h 43m

C$ 714

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Wed 14/1

6:05 p.m.-8:46 a.m.

2 stops11h 41m

London

Sun 18/1

5:10 a.m.-11:53 a.m.

1 stop9h 43m

C$ 714

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Fri 15/5

7:59 p.m.-7:07 p.m.

2 stops20h 08m

London

Sat 30/5

6:00 a.m.-11:26 p.m.

2 stops20h 26m

C$ 813

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Wed 4/3

9:15 a.m.-6:35 a.m.

2 stops18h 20m

London

Wed 18/3

8:10 p.m.-9:28 a.m.

2 stops40h 18m

C$ 980

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Wed 4/3

8:50 a.m.-8:46 a.m.

3 stops20h 56m

London

Wed 18/3

5:10 a.m.-1:41 p.m.

2 stops11h 31m

C$ 1,033

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/12

Showing 1-10 of 14 results
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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, December is the cheapest month in which you can book a flight from California to London, Ontario (average of C$ 27). Flying from California to London, Ontario in November is currently the most expensive (average of C$ 205). 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 can get you from California to London, Ontario in just under 10h 51m. Your travel time can differ by up to . The distance from California to London, Ontario is about 3508 km.

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

    The most popular route from California to London, Ontario is San Diego - London. You may also consider San Jose - 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, December is the cheapest month in which you can book a flight from California to London, Ontario (average of C$ 27). Flying from California to London, Ontario in November is currently the most expensive (average of C$ 205). 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
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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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