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$125+ 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 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YXU
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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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 September 16, 2025.

Round-trip from

$315
(Kiwi.com)

One-way from

$125
(Kiwi.com)

Popular in

July

Cheapest in

May

Average price

$338
From California to London
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One-way flight from California to London
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Highest demand for flights based on searches. 20% potential increase in price ($96 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($20 potential savings vs. average RT price).
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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 September 16, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
Fri 10/1711:30 amLAX - YXU
2 stops14h 42mMultiple Airlines
Wed 10/226:00 amYXU - LAX
1 stop14h 16mMultiple Airlines
Deal found 9/14$315
This Trip.com deal was found by Cheapflights users on 9/14. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/176:05 pmLAX - YXU
1 stop8h 07mWestJet
Wed 10/226:00 amYXU - LAX
1 stop14h 16mWestJet
Deal found 9/14$322
This Air Canada deal was found by Cheapflights users on 9/16. 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.
Fri 10/3110:55 pmLAX - YXU
1 stop6h 51mAir Canada
Fri 11/75:15 amYXU - LAX
1 stop8h 17mAir Canada
Deal found 9/16$357
This oojo deal was found by Cheapflights users on 9/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/276:55 pmLAX - YXU
2 stops31h 17mWestJet
Tue 9/308:00 pmYXU - LAX
2 stops27h 21mWestJet
Deal found 9/14$362
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/301:00 pmSFO - YXU
1 stop27h 12mMultiple Airlines
Thu 11/68:10 pmYXU - SFO
2 stops40h 20mMultiple Airlines
Deal found 9/15$381
This Air Canada deal was found by Cheapflights users on 9/15. 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.
Thu 10/3012:00 pmSFO - YXU
1 stop17h 46mAir Canada
Thu 11/65:45 amYXU - SFO
1 stop8h 09mAir Canada
Deal found 9/15$417
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Fri 10/3110:55 pmLAX - YXU
1 stop6h 51mUnited Airlines
Fri 11/75:45 amYXU - LAX
1 stop7h 47mUnited Airlines
Deal found 9/16$433
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/296:35 amSAN - YXU
2 stops19h 37mMultiple Airlines
Sat 10/46:00 amYXU - SAN
1 stop10h 20mMultiple Airlines
Deal found 9/15$460
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Mon 9/2911:08 amSAN - YXU
2 stops19h 11mUnited Airlines
Sat 10/43:40 pmYXU - SAN
2 stops11h 35mUnited Airlines
Deal found 9/15$485
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Thu 10/308:55 pmSFO - YXU
2 stops17h 11mUnited Airlines
Thu 11/65:40 pmYXU - SFO
2 stops10h 35mUnited Airlines
Deal found 9/15$494
This Mytrip deal was found by Cheapflights users on 9/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/246:15 amSAN - YXU
2 stops19h 57mMultiple Airlines
Tue 9/306:00 amYXU - SAN
2 stops28h 29mMultiple Airlines
Deal found 9/15$515
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Sat 9/279:30 pmSFO - YXU
2 stops20h 59mUnited Airlines
Tue 9/303:50 pmYXU - SFO
1 stop8h 42mUnited Airlines
Deal found 9/14$633

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 September 16, 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

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

Fri 10/17

6:05 pm-5:12 am

1 stop8h 07m

London

Wed 10/22

6:00 am-5:16 pm

1 stop14h 16m

$322

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

Fri 10/31

10:55 pm-8:46 am

1 stop6h 51m

London

Fri 11/7

5:15 am-10:32 am

1 stop8h 17m

$357

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

Sat 9/27

6:55 pm-5:12 am

2 stops31h 17m

London

Tue 9/30

8:00 pm-8:21 pm

2 stops27h 21m

$362

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

Thu 2/19

10:55 pm-8:46 am

1 stop6h 51m

London

Mon 2/23

9:25 am-3:17 pm

1 stop8h 52m

$366

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Thu 2/19

7:30 am-9:21 pm

2 stops10h 51m

London

Fri 2/20

5:45 am-10:54 am

1 stop8h 09m

$400

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Thu 10/30

12:00 pm-8:46 am

1 stop17h 46m

London

Thu 11/6

5:45 am-10:54 am

1 stop8h 09m

$417

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Mon 9/29

6:35 am-5:12 am

2 stops19h 37m

London

Sat 10/4

6:00 am-1:20 pm

1 stop10h 20m

$460

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Mon 9/29

11:08 am-9:19 am

2 stops19h 11m

London

Sat 10/4

3:40 pm-12:15 am

2 stops11h 35m

$485

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Thu 10/30

8:55 pm-5:06 pm

2 stops17h 11m

London

Thu 11/6

5:40 pm-1:15 am

2 stops10h 35m

$494

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Wed 2/18

12:43 am-9:21 pm

2 stops17h 38m

London

Fri 2/20

5:45 am-10:54 am

1 stop8h 09m

$503

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 29 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 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 September 16, 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 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 6h 51m. WestJet provides one of the quickest options available for as low as $357. Airlines will cover a distance of 2090 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from California to London, Ontario one-way?

    The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as $135. However, be on the lookout for offers from United Airlines and Air Canada, as they are both options that can get you from California to London, Ontario for a low price.

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

    When deciding which route to take from California to London, Ontario consider Los Angeles - London, San Diego - London or San Francisco - 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.

See more FAQs

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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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest$162Average$478FlexibilityNo cancel feeOn-time60%
Air CanadaCheapest$178Average$425FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$183Average$372FlexibilityNo cancel feeOn-time69%

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