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$117+ Cheap flights from California to London, ON (YXU)

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 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YXU
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap 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 December 18, 2025.

This Air Canada deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:25 pmLAX - YXU
2 stops18h 40mAir Canada
Fri 1/25:10 amYXU - LAX
2 stops20h 33mAir Canada
Deal found 12/16$826
This United Airlines deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2810:55 pmLAX - YXU
1 stop6h 51mUnited Airlines
Tue 12/305:10 amYXU - LAX
2 stops15h 33mUnited Airlines
Deal found 12/15$971
This United Airlines deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3012:25 amLAX - YXU
2 stops13h 40mUnited Airlines
Fri 1/29:25 amYXU - LAX
1 stop8h 52mUnited Airlines
Deal found 12/16$1,047
This Air Canada deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2810:55 pmLAX - YXU
1 stop6h 51mAir Canada
Tue 12/305:10 amYXU - LAX
1 stop8h 22mAir Canada
Deal found 12/15$1,088
This Kiwi.com deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1811:11 amSAN - YXU
3 stops49h 24mMultiple Airlines
Thu 12/258:10 pmYXU - SAN
1 stop18h 35mMultiple Airlines
Deal found 12/16$1,586
This Air Canada deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1812:40 pmSAN - YXU
1 stop17h 06mAir Canada
Thu 12/255:10 amYXU - SAN
1 stop9h 43mAir Canada
Deal found 12/16$1,601
This United Airlines deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/185:40 pmSAN - YXU
3 stops20h 25mUnited Airlines
Thu 12/255:10 amYXU - SAN
2 stops17h 47mUnited Airlines
Deal found 12/16$1,754

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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$330
(Air Canada)

One-way from

$117
(Kiwi.com)

Popular in

November

Cheapest in

May

Average price

$378
Provider with most accurate pricing for Los Angeles-London flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-London flights.
Search Deals
From California to London
Search Deals
One-way flight from California to London
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($98 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease ($38 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 2,558,603 searches. Data last updated December 18, 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

Tue 4/21

8:45 am-9:18 pm

1 stop9h 33m

London

Sat 4/25

5:10 am-10:45 am

1 stop8h 35m

$330

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

Thu 2/5

11:50 am-6:35 am

2 stops15h 45m

London

Mon 2/9

8:10 pm-10:03 pm

1 stop28h 53m

$353

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

Sat 1/31

11:30 am-9:20 pm

1 stop6h 50m

London

Sat 2/7

9:25 am-3:17 pm

1 stop8h 52m

$366

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

Thu 2/5

10:55 pm-8:46 am

1 stop6h 51m

London

Mon 2/9

9:25 am-7:27 pm

1 stop13h 02m

$379

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

Fri 3/27

10:55 pm-8:46 am

1 stop6h 51m

London

Sat 4/4

5:10 am-1:23 pm

2 stops11h 13m

$394

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Thu 1/15

1:00 pm-6:34 am

1 stop14h 34m

London

Mon 1/19

8:10 pm-12:12 pm

1 stop19h 02m

$439

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Thu 1/15

6:05 pm-8:46 am

2 stops11h 41m

London

Sun 1/18

5:10 am-11:53 am

1 stop9h 43m

$447

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

Thu 2/5

8:50 am-9:21 pm

2 stops9h 31m

London

Mon 2/9

5:40 pm-12:59 am

2 stops10h 19m

$467

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Thu 1/15

1:20 pm-8:46 am

2 stops16h 26m

London

Mon 1/19

5:40 pm-3:35 pm

2 stops24h 55m

$525

SacramentoLondon

SMF - YXU

SMFYXU

Sacramento Intl

Sun 1/25

6:45 am-8:46 am

2 stops23h 01m

London

Thu 1/29

5:10 am-9:48 am

2 stops31h 38m

$642

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 27 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 $20). Flying from California to London, Ontario in November is currently the most expensive (average of $150). 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 December 18, 2025.

It’s optimal to fly from California to London, Ontario at noon. By choosing this option you can save up to 37% on the cost of your flight, compared to a flight in the morning.

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 5.3 mi journey from London (YXU) to London’s city center.

  • How long is the flight from California to London, Ontario?

    A quick flight from California to London, Ontario can take about 9h 33m. Air Canada provides one of the quickest options available for as low as $330. Airlines will cover a distance of 2180 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most popular routes from California to London, Ontario?

    When deciding which route to take from California to London, Ontario consider San Francisco - London, San Diego - London or Los Angeles - London as they are the most popular.

  • 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 $20). Flying from California to London, Ontario in November is currently the most expensive (average of $150). 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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Alternative routes for California to London

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from California to London

Discover the top 3 airlines that operate flights from California to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest$162Average$478FlexibilityNo cancel feeOn-time60%
Air CanadaCheapest$178Average$453FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$186Average$357FlexibilityNo cancel feeOn-time69%

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