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Cheap flights from California to London, ON from C$ 299

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 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YXU
22 Jan — 29 Jan1
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 23 December 2025.

Fri 26/126:30 a.m.SAN - YXU
2 stops11h 51mAir Canada
Sun 4/19:50 a.m.YXU - SAN
2 stops16h 01mAir Canada
Deal found 21/12C$ 1,842
Fri 26/1211:12 a.m.SAN - YXU
2 stops18h 34mUnited Airlines
Sun 4/15:10 a.m.YXU - SAN
3 stops20h 22mUnited Airlines
Deal found 21/12C$ 2,066

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 23 December 2025.

Round-trip from

C$ 475

One-way from

C$ 299

Popular in

November

Cheapest in

May

Average price

C$ 520
Air Canada
  • Air Canada
  • 20/4-24/4
  • 2 total stops
  • 26h 16m total
  • California to London
Search Deals
6/2
  • 6/2
  • 3 total stops
  • 44h 33m total
  • California to London
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (C$ 185 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease (C$ 71 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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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 23 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

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$ 591

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Thu 5/2

8:49 a.m.-9:21 p.m.

1 stop9h 32m

London

Thu 12/2

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

1 stop8h 44m

C$ 694

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Wed 4/3

2:36 p.m.-6:35 a.m.

2 stops36h 59m

London

Wed 18/3

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

2 stops40h 18m

C$ 704

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

8:00 p.m.-8:00 p.m.

2 stops27h 00m

C$ 792

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Mon 20/4

6:10 p.m.-8:43 a.m.

2 stops11h 33m

London

Fri 24/4

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

1 stop9h 43m

C$ 819

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$ 1,136

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Wed 4/2

8:40 a.m.-9:20 p.m.

2 stops9h 40m

London

Wed 11/2

5:10 a.m.-8:56 p.m.

2 stops18h 46m

C$ 1,245

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Fri 6/2

7:40 p.m.-7:13 p.m.

3 stops44h 33m

C$ 299

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Fri 6/2

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

1 stop17h 46m

C$ 317

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Fri 6/2

11:56 p.m.-9:21 p.m.

2 stops18h 25m

C$ 340

Flights are sorted by cheapest round-trip flights first.

Deals found on 22/12

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$ 207). 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 9h 33m. 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 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$ 207). 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?

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