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Cheap flights from California to London, ON from C$ 184

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 18/11. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YXU
17 Oct — 24 Oct1
1 adult
1 adult, Economy

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 17 September 2025.

Round-trip from

C$ 557

One-way from

C$ 184

Popular in

July

Cheapest in

May

Average price

C$ 465
Air Canada
  • Air Canada
  • 19/2-20/2
  • 3 total stops
  • 19h 30m total
  • California to London
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18/11
  • 18/11
  • 3 total stops
  • 53h 57m total
  • California to London
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (C$ 179 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (C$ 37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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Find flight deals from California to London

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 17 September 2025.

Mon 29/96:35 a.m.SAN - YXU
2 stops19h 37mMultiple Airlines
Sat 4/106:00 a.m.YXU - SAN
1 stop10h 20mMultiple Airlines
Deal found 15/9C$ 633
Mon 29/911:08 a.m.SAN - YXU
2 stops19h 11mUnited Airlines
Sat 4/103:40 p.m.YXU - SAN
2 stops11h 35mUnited Airlines
Deal found 15/9C$ 667
Sat 1/117:30 a.m.SFO - YXU
2 stops10h 51mAir Canada
Sat 8/115:15 a.m.YXU - SFO
1 stop8h 39mAir Canada
Deal found 17/9C$ 700
Wed 24/96:15 a.m.SAN - YXU
2 stops19h 57mMultiple Airlines
Tue 30/96:00 a.m.YXU - SAN
2 stops28h 29mMultiple Airlines
Deal found 15/9C$ 708
Thu 30/108:30 a.m.SFO - YXU
1 stop9h 51mAir Canada
Fri 31/109:25 a.m.YXU - SFO
1 stop15h 09mAir Canada
Deal found 17/9C$ 758
Fri 31/1012:43 a.m.SFO - YXU
2 stops13h 22mUnited Airlines
Sat 8/115:15 a.m.YXU - SFO
1 stop8h 39mUnited Airlines
Deal found 17/9C$ 810
Wed 29/1012:43 a.m.SFO - YXU
2 stops13h 23mMultiple Airlines
Fri 31/109:25 a.m.YXU - SFO
2 stops14h 57mMultiple Airlines
Deal found 17/9C$ 817
Wed 29/1012:43 a.m.SFO - YXU
2 stops13h 23mUnited Airlines
Fri 31/109:25 a.m.YXU - SFO
1 stop14h 25mUnited Airlines
Deal found 17/9C$ 842
Thu 25/96:15 a.m.SAN - YXU
2 stops12h 14mUnited Airlines
Tue 30/96:10 a.m.YXU - SAN
1 stop8h 21mUnited Airlines
Deal found 15/9C$ 1,099
Thu 25/98:25 a.m.SAN - YXU
3 stops17h 47mMultiple Airlines
Tue 30/96:00 a.m.YXU - SAN
2 stops28h 29mMultiple Airlines
Deal found 15/9C$ 1,234
Sat 1/1110:15 a.m.SFO - YXU
3 stops30h 57mMultiple Airlines
Sat 8/115:05 p.m.YXU - SFO
2 stops31h 15mMultiple Airlines
Deal found 17/9C$ 1,348

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 17 September 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

5:15 a.m.-10:54 a.m.

1 stop8h 39m

C$ 557

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Mon 29/9

6:35 a.m.-5:12 a.m.

2 stops19h 37m

London

Sat 4/10

6:00 a.m.-1:20 p.m.

1 stop10h 20m

C$ 633

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Mon 29/9

11:08 a.m.-9:19 a.m.

2 stops19h 11m

London

Sat 4/10

3:40 p.m.-12:15 a.m.

2 stops11h 35m

C$ 667

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Sat 1/11

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

2 stops10h 51m

London

Sat 8/11

5:15 a.m.-10:54 a.m.

1 stop8h 39m

C$ 700

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Wed 18/2

12:43 a.m.-9:21 p.m.

2 stops17h 38m

London

Fri 20/2

5:45 a.m.-10:54 a.m.

1 stop8h 09m

C$ 700

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Thu 19/2

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

2 stops11h 21m

London

Mon 23/2

5:45 a.m.-11:38 a.m.

1 stop8h 53m

C$ 721

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Thu 30/10

8:30 a.m.-9:21 p.m.

1 stop9h 51m

London

Fri 31/10

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

1 stop15h 09m

C$ 758

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Thu 19/2

12:25 p.m.-8:46 a.m.

1 stop17h 21m

London

Mon 23/2

5:45 a.m.-11:38 a.m.

1 stop8h 53m

C$ 784

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Wed 4/3

1:00 p.m.-6:35 a.m.

2 stops38h 35m

London

Wed 18/3

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

2 stops25h 55m

C$ 807

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Wed 29/10

12:43 a.m.-5:06 p.m.

2 stops13h 23m

London

Fri 31/10

9:25 a.m.-9:22 p.m.

2 stops14h 57m

C$ 817

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/9

Showing 1-10 of 22 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, October is the cheapest month in which you can book a flight from California to London, Ontario (average of C$ 243). Flying from California to London, Ontario in December is currently the most expensive (average of C$ 478). 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.

What is the cheapest time of day to fly from CA to YXU?

Find hourly flight availability from California to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 September 2025.

When flying from California to London, Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 8h 20m. 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 Diego - London. You may also consider San Francisco - London or San Jose - 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, October is the cheapest month in which you can book a flight from California to London, Ontario (average of C$ 243). Flying from California to London, Ontario in December is currently the most expensive (average of C$ 478). 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

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