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$139+ 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 7/15. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YXU
avr. 27 — mai 41
dim. 4/27
dim. 5/4
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 avril 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$307
(Kiwi.com)

One-way from

$139
(Air Canada)

Popular in

May

Cheapest in

February

Average price

$382
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. 14% potential increase in price ($73 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in April 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 avril 22, 2025.

This Kiwi.com deal was found by Cheapflights users on 4/21. 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.
jeu. 5/226:35 amSFO - YXU
2 stops19h 39mMultiple Airlines
mer. 5/286:00 amYXU - SFO
1 stop9h 05mMultiple Airlines
Deal found 4/21$307
This Justfly.com deal was found by Cheapflights users on 4/22. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 7/116:05 pmLAX - YXU
1 stop8h 09mWestJet
lun. 7/148:00 pmYXU - LAX
1 stop17h 53mWestJet
Deal found 4/22$316
This Justfly.com deal was found by Cheapflights users on 4/22. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 6/106:05 pmSFO - YXU
1 stop8h 09mWestJet
mar. 6/176:00 amYXU - SFO
1 stop9h 05mWestJet
Deal found 4/22$318
This United Airlines deal was found by Cheapflights users on 4/22. 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.
ven. 6/65:38 pmLAX - YXU
2 stops18h 20mUnited Airlines
ven. 6/136:15 amYXU - LAX
1 stop7h 26mUnited Airlines
Deal found 4/22$363
This United Airlines deal was found by Cheapflights users on 4/21. 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.
mer. 5/216:51 pmSFO - YXU
2 stops17h 12mUnited Airlines
jeu. 5/293:40 pmYXU - SFO
1 stop8h 57mUnited Airlines
Deal found 4/21$373
This Air Canada deal was found by Cheapflights users on 4/21. 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.
lun. 5/1912:10 amSFO - YXU
2 stops11h 53mAir Canada
jeu. 5/296:15 amYXU - SFO
1 stop7h 50mAir Canada
Deal found 4/21$397
This Kiwi.com deal was found by Cheapflights users on 4/22. 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.
jeu. 5/86:05 pmLAX - YXU
1 stop8h 09mMultiple Airlines
jeu. 5/158:00 pmYXU - LAX
2 stops17h 45mMultiple Airlines
Deal found 4/22$524
This Mytrip deal was found by Cheapflights users on 4/22. 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.
ven. 6/66:00 amSJC - YXU
2 stops20h 14mMultiple Airlines
ven. 6/138:00 pmYXU - SJC
3 stops30h 34mMultiple Airlines
Deal found 4/22$534
This United Airlines deal was found by Cheapflights users on 4/22. 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.
mar. 6/1012:40 pmSMF - YXU
2 stops29h 48mUnited Airlines
mar. 6/176:15 amYXU - SMF
2 stops19h 58mUnited Airlines
Deal found 4/22$630
This United Airlines deal was found by Cheapflights users on 4/22. 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.
ven. 6/62:30 pmSJC - YXU
2 stops21h 28mUnited Airlines
ven. 6/133:35 pmYXU - SJC
2 stops28h 47mUnited Airlines
Deal found 4/22$680
This Air Canada deal was found by Cheapflights users on 4/22. 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.
jeu. 7/1012:08 amLAX - YXU
2 stops11h 49mAir Canada
lun. 7/146:15 amYXU - LAX
2 stops10h 08mAir Canada
Deal found 4/22$726
This WestJet deal was found by Cheapflights users on 4/22. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/65:00 pmSJC - YXU
2 stops23h 10mWestJet
ven. 5/96:00 amYXU - SJC
2 stops16h 25mWestJet
Deal found 4/22$1,039

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 avril 22, 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

jeu. 5/22

6:35 am-5:14 am

2 stops19h 39m

London

mer. 5/28

6:00 am-12:05 pm

1 stop9h 05m

$307

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

ven. 7/11

6:05 pm-5:14 am

1 stop8h 09m

London

lun. 7/14

8:00 pm-10:53 am

1 stop17h 53m

$316

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

mar. 6/10

6:05 pm-5:14 am

1 stop8h 09m

London

mar. 6/17

6:00 am-12:05 pm

1 stop9h 05m

$318

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

ven. 6/6

5:38 pm-2:58 pm

2 stops18h 20m

London

ven. 6/13

6:15 am-10:41 am

1 stop7h 26m

$363

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

mer. 5/21

6:51 pm-3:03 pm

2 stops17h 12m

London

jeu. 5/29

3:40 pm-9:37 pm

1 stop8h 57m

$373

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

lun. 5/19

12:10 am-3:03 pm

2 stops11h 53m

London

jeu. 5/29

6:15 am-11:05 am

1 stop7h 50m

$397

Los AngelesLondon

LAX - YXU

LAXYXU

Los Angeles

jeu. 5/8

6:05 pm-5:14 am

1 stop8h 09m

London

jeu. 5/15

8:00 pm-10:45 am

2 stops17h 45m

$524

San JoseLondon

SJC - YXU

SJCYXU

San Jose

ven. 6/6

6:00 am-5:14 am

2 stops20h 14m

London

ven. 6/13

8:00 pm-11:34 pm

3 stops30h 34m

$534

SacramentoLondon

SMF - YXU

SMFYXU

Sacramento Intl

mar. 6/10

12:40 pm-9:28 pm

2 stops29h 48m

London

mar. 6/17

6:15 am-11:13 pm

2 stops19h 58m

$630

San JoseLondon

SJC - YXU

SJCYXU

San Jose

ven. 6/6

2:30 pm-2:58 pm

2 stops21h 28m

London

ven. 6/13

3:35 pm-5:22 pm

2 stops28h 47m

$680

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/21

Showing 1-10 of 20 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 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 avril 22, 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.

Rainfall in London by month

Plan your trip to London by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London, Ontario ranges from 2.8 - 3.9 inches per month. January is typically the wettest month, when rainfall can reach 3.9 in. March is typically the driest time to visit London, Ontario when rainfall is around 2.8 in.

Temperature in London by month

Plan your trip to London by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London, Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of February, when temperatures are typically at their lowest (around 21.2 F).

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated avril 22, 2025.
Peruse reviews from past customers who have flown with United Airlines, WestJet and Air Canada from California to London to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,683 reviews

Overall

7.4

Boarding

7.7

Food

6.6

Comfort

7.3

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,683 reviews
United Airlines
7.4
Good
8,683 reviews

Overall

7.4

Boarding

7.7

Food

6.6

Comfort

7.3

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
WestJet
7.2
Good
2,813 reviews
United Airlines
7.4
Good
8,683 reviews

Overall

7.4

Boarding

7.7

Food

6.6

Comfort

7.3

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Air Canada
7.0
Good
9,180 reviews
United Airlines
7.4
Good
8,683 reviews

Overall

7.4

Boarding

7.7

Food

6.6

Comfort

7.3

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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.

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

    The cheapest airline one-way is Air Canada, with whom users have recently found tickets for as low as $139. However, be on the lookout for offers from WestJet and United Airlines, 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 Francisco - 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.

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 avril 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$183Average$363FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$192Average$676FlexibilityNo cancel feeOn-time67%
WestJetCheapest$306Average$501FlexibilityNo cancel feeOn-time60%

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