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Cheap flights from California to London, ON from C$ 530

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 18/1. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YXU
3 Jan — 10 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 4 December 2025.

Thu 18/125:00 a.m.SFO - YXU
2 stops13h 21mUnited Airlines
Thu 25/125:10 a.m.YXU - SFO
2 stops19h 31mUnited Airlines
Deal found 3/12C$ 1,211
Thu 18/126:50 p.m.SFO - YXU
2 stops19h 15mAir Canada
Thu 25/125:10 a.m.YXU - SFO
1 stop8h 44mAir Canada
Deal found 3/12C$ 1,266
Thu 18/121:00 p.m.SFO - YXU
1 stop14h 34mWestJet
Thu 25/128:10 p.m.YXU - SFO
1 stop19h 02mWestJet
Deal found 3/12C$ 1,342
Sat 20/126:50 p.m.SFO - YXU
2 stops19h 15mAir Canada
Thu 25/125:10 a.m.YXU - SFO
1 stop8h 44mAir Canada
Deal found 3/12C$ 1,354
Thu 18/125:00 a.m.SFO - YXU
2 stops13h 21mUnited Airlines
Fri 26/125:10 a.m.YXU - SFO
1 stop8h 44mUnited Airlines
Deal found 3/12C$ 1,355
Fri 19/125:00 a.m.SFO - YXU
2 stops13h 21mUnited Airlines
Thu 25/125:10 a.m.YXU - SFO
2 stops19h 31mUnited Airlines
Deal found 3/12C$ 1,368
Thu 18/125:00 a.m.SFO - YXU
2 stops13h 21mUnited Airlines
Sat 27/125:10 a.m.YXU - SFO
1 stop8h 40mUnited Airlines
Deal found 3/12C$ 1,451
Sat 20/1211:05 p.m.SFO - YXU
2 stops15h 00mUnited Airlines
Thu 25/125:10 a.m.YXU - SFO
2 stops17h 44mUnited Airlines
Deal found 3/12C$ 1,457
Fri 19/125:00 a.m.SFO - YXU
2 stops13h 21mUnited Airlines
Fri 26/125:10 a.m.YXU - SFO
1 stop8h 44mUnited Airlines
Deal found 3/12C$ 1,511
Thu 18/125:00 a.m.SFO - YXU
2 stops13h 21mUnited Airlines
Mon 29/129:25 a.m.YXU - SFO
1 stop9h 00mUnited Airlines
Deal found 3/12C$ 1,541

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 4 December 2025.

Round-trip from

C$ 530

Popular in

November

Cheapest in

May

Average price

C$ 528
18/1-25/1
  • 18/1-25/1
  • 3 total stops
  • 39h 18m total
  • California to London
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (C$ 208 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 12% potential price decrease (C$ 96 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 4 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

Sun 18/1

1:00 p.m.-6:34 a.m.

1 stop14h 34m

London

Sun 25/1

8:10 p.m.-5:54 p.m.

2 stops24h 44m

C$ 530

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sun 18/1

6:50 p.m.-8:46 a.m.

2 stops10h 56m

London

Sun 25/1

5:10 a.m.-2:07 p.m.

2 stops11h 57m

C$ 581

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Thu 15/1

1:20 p.m.-8:46 a.m.

2 stops16h 26m

London

Mon 19/1

5:40 p.m.-9:40 a.m.

2 stops19h 00m

C$ 607

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Thu 15/1

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$ 680

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sat 17/1

11:56 p.m.-5:05 p.m.

2 stops14h 09m

London

Sat 24/1

5:40 p.m.-8:41 a.m.

2 stops18h 01m

C$ 735

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Wed 14/1

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

2 stops11h 41m

London

Sat 17/1

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

1 stop9h 43m

C$ 815

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$ 855

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Fri 15/5

9:05 a.m.-5:12 a.m.

2 stops17h 07m

London

Sat 30/5

6:00 a.m.-5:04 p.m.

2 stops14h 04m

C$ 1,017

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$ 1,090

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Sun 25/1

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

2 stops9h 40m

London

Wed 28/1

5:10 a.m.-1:39 p.m.

2 stops11h 29m

C$ 1,158

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/12

Showing 1-10 of 16 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$ 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 and Delta can get you from California to London, Ontario in just under 10h 56m. Your travel time can differ by up to 6h 11m. 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 Francisco - London. You may also consider San Jose - 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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