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$238+ 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 12/17. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YXU
Dec 4 — Dec 111
Thu 12/4
Thu 12/11
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 November 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$333
(Trip.com)

One-way from

$238
(Kiwi.com)

Popular in

September

Cheapest in

May

Average price

$426
Provider with most accurate pricing for Los Angeles-London flight deals.
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Provider most trusted by Cheapflights users for Los Angeles-London flights.
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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. 22% potential increase in price ($118 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($34 potential savings vs. average RT price).
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Average for round-trip flights in November 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 November 4, 2025.

This Air Canada deal was found by Cheapflights users on 11/2. 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.
Sat 12/612:40 pmSAN - YXU
1 stop17h 06mAir Canada
Sun 12/145:10 amYXU - SAN
1 stop9h 43mAir Canada
Deal found 11/2$602
This United Airlines deal was found by Cheapflights users on 11/2. 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.
Wed 12/177:01 amLAX - YXU
2 stops11h 20mUnited Airlines
Wed 12/249:25 amYXU - LAX
2 stops17h 34mUnited Airlines
Deal found 11/2$649
This United Airlines deal was found by Cheapflights users on 11/2. 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 12/68:45 amSAN - YXU
2 stops9h 36mUnited Airlines
Sun 12/149:25 amYXU - SAN
3 stops13h 31mUnited Airlines
Deal found 11/2$711
This Mytrip deal was found by Cheapflights users on 11/2. 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 12/177:20 pmLAX - YXU
2 stops32h 14mWestJet
Wed 12/248:10 pmYXU - LAX
3 stops26h 40mWestJet
Deal found 11/2$739
This Air Canada deal was found by Cheapflights users on 11/2. 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 12/174:20 pmLAX - YXU
1 stop13h 26mAir Canada
Wed 12/245:10 amYXU - LAX
1 stop17h 17mAir Canada
Deal found 11/2$862

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 November 4, 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 2/19

7:30 am-9:21 pm

2 stops10h 51m

London

Fri 2/20

5:10 am-10:54 am

1 stop8h 44m

$433

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Mon 3/23

10:50 pm-5:05 pm

2 stops15h 15m

London

Sun 3/29

5:40 pm-1:16 am

2 stops10h 36m

$528

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Wed 3/4

1:00 pm-6:35 am

2 stops38h 35m

London

Wed 3/18

8:10 pm-9:13 am

2 stops40h 03m

$572

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Thu 2/19

6:10 pm-8:46 am

2 stops11h 36m

London

Mon 2/23

5:10 am-11:53 am

1 stop9h 43m

$584

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Sat 12/6

12:40 pm-8:46 am

1 stop17h 06m

London

Sun 12/14

5:10 am-11:53 am

1 stop9h 43m

$602

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Mon 3/23

12:00 pm-8:46 am

1 stop17h 46m

London

Sun 3/29

9:25 am-9:32 pm

1 stop15h 07m

$607

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

Wed 12/17

7:01 am-9:21 pm

2 stops11h 20m

London

Wed 12/24

9:25 am-11:59 pm

2 stops17h 34m

$649

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

Wed 12/17

7:20 pm-6:34 am

2 stops32h 14m

London

Wed 12/24

8:10 pm-10:03 pm

1 stop28h 53m

$755

San JoseLondon

SJC - YXU

SJCYXU

San Jose

Wed 3/4

8:50 am-8:46 am

3 stops20h 56m

London

Wed 3/18

5:10 am-9:20 pm

2 stops19h 10m

$853

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

Wed 12/17

4:20 pm-8:46 am

1 stop13h 26m

London

Wed 12/24

5:10 am-7:27 pm

1 stop17h 17m

$862

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/4

Showing 1-10 of 28 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 $124). 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 November 4, 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 10h 51m. Air Canada provides one of the quickest options available for as low as $433. 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 Diego - London, Los Angeles - London or San Jose - 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 $124). 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 November 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest$162Average$478FlexibilityNo cancel feeOn-time60%
Air CanadaCheapest$178Average$453FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$183Average$357FlexibilityNo cancel feeOn-time69%

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