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Cheap flights from California to London, ON from C$ 607

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 19/2. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YXU
13 Dec — 20 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from California to London

Keep the following information in mind while searching for California to London flight deals. Data was last updated 13 November 2025.

Round-trip from

C$ 607

Popular in

November

Cheapest in

May

Average price

C$ 1,251
Air Canada
  • Air Canada
  • 19/2-20/2
  • 3 total stops
  • 19h 35m total
  • California to London
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (C$ 209 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 12% potential price decrease (C$ 97 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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Find 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 13 November 2025.

Sun 28/1211:35 p.m.SFO - YXU
2 stops18h 46mUnited Airlines
Sun 4/19:25 a.m.YXU - SFO
2 stops17h 38mUnited Airlines
Deal found 13/11C$ 1,039
Sat 27/1212:00 p.m.SFO - YXU
1 stop17h 46mUnited Airlines
Sat 3/19:25 a.m.YXU - SFO
2 stops25h 14mUnited Airlines
Deal found 11/11C$ 1,304
Sat 27/124:15 p.m.SFO - YXU
1 stop13h 31mAir Canada
Sat 3/15:10 a.m.YXU - SFO
1 stop8h 44mAir Canada
Deal found 11/11C$ 1,418
Fri 26/1210:30 p.m.SJC - YXU
2 stops31h 16mUnited Airlines
Fri 2/19:25 a.m.YXU - SJC
2 stops16h 09mUnited Airlines
Deal found 11/11C$ 1,638
Fri 26/122:29 p.m.SJC - YXU
3 stops15h 17mMultiple Airlines
Fri 2/19:25 a.m.YXU - SJC
2 stops14h 52mMultiple Airlines
Deal found 11/11C$ 4,407

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 13 November 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 19/2

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

2 stops10h 51m

London

Fri 20/2

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

1 stop8h 44m

C$ 607

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Wed 18/2

12:43 a.m.-5:05 p.m.

2 stops13h 22m

London

Fri 20/2

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

1 stop8h 44m

C$ 719

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Thu 19/2

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

2 stops11h 41m

London

Mon 23/2

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

1 stop9h 43m

C$ 818

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Wed 4/3

10:16 a.m.-6:35 a.m.

2 stops17h 19m

London

Wed 18/3

8:10 p.m.-7:05 p.m.

2 stops25h 55m

C$ 925

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Thu 19/2

6:55 p.m.-5:05 p.m.

2 stops19h 10m

London

Mon 23/2

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

2 stops15h 00m

C$ 951

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sun 28/12

11:35 p.m.-9:21 p.m.

2 stops18h 46m

London

Sun 4/1

9:25 a.m.-12:03 a.m.

2 stops17h 38m

C$ 1,039

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.-1:35 p.m.

2 stops11h 25m

C$ 1,223

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Tue 5/5

12:45 p.m.-9:17 a.m.

2 stops17h 32m

London

Wed 6/5

3:35 p.m.-5:43 p.m.

2 stops29h 08m

C$ 1,279

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sat 27/12

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

1 stop17h 46m

London

Sat 3/1

9:25 a.m.-7:39 a.m.

2 stops25h 14m

C$ 1,304

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Fri 26/12

10:30 p.m.-8:46 a.m.

2 stops31h 16m

London

Fri 2/1

9:25 a.m.-10:34 p.m.

2 stops16h 09m

C$ 1,638

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/11

Showing 1-10 of 11 results
1
2

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$ 28). Flying from California to London, Ontario in November is currently the most expensive (average of C$ 203). 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 and United Airlines can get you from California to London, Ontario in just under 10h 51m. Your travel time can differ by up to 2h 31m. The distance from California to London, Ontario is about 3508 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 Francisco - London or San Diego - 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$ 28). Flying from California to London, Ontario in November is currently the most expensive (average of C$ 203). 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
Grand Bend

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