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Cheap flights from California to London, ON from C$ 302

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 17/12. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YXU
20 Dec — 27 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 20 November 2025.

Round-trip from

C$ 483

One-way from

C$ 302

Popular in

November

Cheapest in

May

Average price

C$ 1,256
WestJet
  • WestJet
  • 8/5-11/5
  • 2 total stops
  • 17h 31m total
  • California to London
Search Deals
17/12
  • 17/12
  • 3 total stops
  • 29h 24m total
  • California to London
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (C$ 212 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 12% potential price decrease (C$ 99 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 20 November 2025.

Tue 9/129:10 a.m.SAN - YXU
2 stops18h 24mMultiple Airlines
Thu 11/128:10 p.m.YXU - SAN
1 stop18h 35mMultiple Airlines
Deal found 20/11C$ 791
Tue 9/127:30 a.m.SFO - YXU
2 stops10h 51mAir Canada
Sat 13/125:10 a.m.YXU - SFO
1 stop8h 40mAir Canada
Deal found 20/11C$ 865
Mon 8/1212:43 a.m.SFO - YXU
2 stops13h 22mUnited Airlines
Sat 13/125:10 a.m.YXU - SFO
1 stop8h 40mUnited Airlines
Deal found 20/11C$ 978
Tue 9/1212:40 p.m.SAN - YXU
1 stop17h 06mAir Canada
Thu 11/125:10 a.m.YXU - SAN
1 stop9h 43mAir Canada
Deal found 20/11C$ 1,217
Tue 9/128:40 p.m.SAN - YXU
2 stops9h 06mUnited Airlines
Thu 11/129:25 a.m.YXU - SAN
2 stops25h 41mUnited Airlines
Deal found 20/11C$ 1,296
Sat 20/1211:05 p.m.SFO - YXU
2 stops15h 00mAir Canada
Sat 27/125:10 a.m.YXU - SFO
1 stop8h 40mAir Canada
Deal found 20/11C$ 1,456
Sat 20/126:50 p.m.SFO - YXU
2 stops19h 15mUnited Airlines
Sat 27/129:25 a.m.YXU - SFO
2 stops25h 14mUnited Airlines
Deal found 20/11C$ 1,517

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 20 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

Fri 8/5

7:30 a.m.-7:07 p.m.

1 stop8h 37m

London

Mon 11/5

6:00 a.m.-11:54 a.m.

1 stop8h 54m

C$ 483

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Mon 20/4

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

1 stop9h 33m

London

Wed 29/4

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

1 stop8h 45m

C$ 605

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Tue 20/1

6:00 p.m.-8:46 a.m.

2 stops11h 46m

London

Thu 22/1

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

1 stop8h 44m

C$ 609

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Fri 9/1

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

1 stop17h 46m

London

Tue 13/1

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

1 stop8h 44m

C$ 634

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Thu 7/5

12:45 a.m.-2:57 p.m.

2 stops11h 12m

London

Mon 11/5

3:35 p.m.-8:38 p.m.

1 stop8h 03m

C$ 722

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Tue 9/12

9:10 a.m.-6:34 a.m.

2 stops18h 24m

London

Thu 11/12

8:10 p.m.-11:45 a.m.

1 stop18h 35m

C$ 791

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$ 822

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.-10:04 p.m.

2 stops28h 54m

C$ 914

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Wed 14/1

7:00 a.m.-9:21 p.m.

2 stops11h 21m

London

Sat 17/1

9:25 a.m.-8:49 p.m.

3 stops14h 24m

C$ 962

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.-7:05 p.m.

2 stops16h 05m

C$ 1,026

Flights are sorted by cheapest round-trip flights first.

Deals found on 18/11

Showing 1-10 of 18 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$ 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?

    WestJet, Air Canada, and Delta can get you from California to London, Ontario in just under 8h 37m. Your travel time can differ by up to 8h 30m. 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$ 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?

Book flights to London if you plan to visit one of these locations
Port Stanley
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