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Ontario

$67+ Cheap flights from Los Angeles to Ontario (LAX - ONT)

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 2/10. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — ONT
Jan 26 — Feb 21
Mon 1/26
Mon 2/2
1 adult, Economy
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Cheap flight deals from Los Angeles to Ontario

Cheapest flights from Los Angeles to Ontario
Explore the most affordable flight options available from Los Angeles to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 27, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/25. 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 12/299:20 pmLAX - ONT
1 stop23h 57mMultiple Airlines
Sat 1/35:16 pmONT - LAX
1 stop14h 02mMultiple Airlines
Deal found 12/25$378
This Kiwi.com deal was found by Cheapflights users on 12/26. 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.
Wed 12/311:11 pmLAX - ONT
1 stop4h 04mMultiple Airlines
Sun 1/46:37 pmONT - LAX
1 stop12h 41mMultiple Airlines
Deal found 12/26$389
This Kiwi.com deal was found by Cheapflights users on 12/26. 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.
Sat 12/279:20 pmLAX - ONT
1 stop20h 22mMultiple Airlines
Sat 1/35:16 pmONT - LAX
1 stop14h 02mMultiple Airlines
Deal found 12/26$423
This Kiwi.com deal was found by Cheapflights users on 12/27. 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.
Tue 12/309:20 pmLAX - ONT
1 stop19h 55mMultiple Airlines
Fri 1/25:54 pmONT - LAX
1 stop13h 24mMultiple Airlines
Deal found 12/27$485
This Kiwi.com deal was found by Cheapflights users on 12/26. 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.
Wed 12/311:11 pmLAX - ONT
1 stop8h 06mFrontier
Sun 1/410:12 pmONT - LAX
2 stops14h 04mFrontier
Deal found 12/26$541
This Kiwi.com deal was found by Cheapflights users on 12/25. 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 12/266:58 pmLAX - ONT
1 stop5h 14mMultiple Airlines
Sun 12/286:37 pmONT - LAX
1 stop12h 41mMultiple Airlines
Deal found 12/25$609
This Kiwi.com deal was found by Cheapflights users on 12/26. 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.
Sun 12/283:30 pmLAX - ONT
1 stop5h 57mMultiple Airlines
Mon 12/2910:12 pmONT - LAX
2 stops33h 06mMultiple Airlines
Deal found 12/26$650
This Kiwi.com deal was found by Cheapflights users on 12/27. 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.
Tue 12/303:30 pmLAX - ONT
1 stop5h 47mFrontier
Fri 1/210:12 pmONT - LAX
2 stops22h 19mFrontier
Deal found 12/27$675
This Kiwi.com deal was found by Cheapflights users on 12/26. 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 12/296:58 pmLAX - ONT
1 stop5h 14mMultiple Airlines
Wed 12/314:22 pmONT - LAX
1 stop28h 53mMultiple Airlines
Deal found 12/26$701
This Kiwi.com deal was found by Cheapflights users on 12/26. 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.
Sun 12/283:30 pmLAX - ONT
1 stop5h 57mFrontier
Mon 12/292:45 pmONT - LAX
1 stop18h 01mFrontier
Deal found 12/26$723

Find flight deals from Los Angeles to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Los Angeles (LAX) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 27, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$125
(Kiwi.com)

One-way from

$67
(Kiwi.com)
Provider with most accurate pricing for Los Angeles-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Ontario flights.
Search Deals
From Los Angeles to Ontario
Search Deals
One-way flight from Los Angeles to Ontario
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Los Angeles to Ontario 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 27, 2025.
Use the filters below to find and compare flights from Los Angeles to Ontario that are best for you.

Fly from

Los Angeles

Fly to

Ontario

Route

Depart

Return

Price

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Sat 1/31

9:17 am-1:34 pm

1 stop4h 17m

Ontario

Sun 2/1

8:27 pm-8:22 am

1 stop11h 55m

$125

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Thu 2/26

9:12 am-1:11 pm

1 stop3h 59m

Ontario

Sun 3/1

10:14 pm-8:15 am

1 stop10h 01m

$131

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Sat 1/24

9:17 am-1:34 pm

1 stop4h 17m

Ontario

Sat 1/31

7:15 am-1:44 pm

1 stop6h 29m

$132

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Fri 2/20

9:12 am-1:26 pm

1 stop4h 14m

Ontario

Sun 2/22

10:18 pm-8:15 am

1 stop9h 57m

$150

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Sat 1/31

2:39 pm-11:24 pm

1 stop8h 45m

Ontario

Sun 2/1

5:21 pm-8:36 am

2 stops15h 15m

$151

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Sat 1/24

2:39 pm-11:24 pm

1 stop8h 45m

Ontario

Sat 1/31

3:04 pm-8:36 am

2 stops17h 32m

$158

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Sat 1/24

9:17 am-11:24 pm

2 stops14h 07m

Ontario

Sun 1/25

8:27 pm-8:22 am

1 stop11h 55m

$159

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Sat 1/10

4:07 pm-7:36 am

1 stop15h 29m

Ontario

Thu 1/15

2:34 pm-7:22 pm

1 stop4h 48m

$160

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Fri 1/16

9:17 am-5:44 pm

1 stop8h 27m

Ontario

Sun 1/18

2:34 pm-7:22 pm

1 stop4h 48m

$162

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Fri 1/9

9:17 am-2:54 pm

1 stop5h 37m

Ontario

Wed 1/14

6:49 pm-8:20 am

1 stop13h 31m

$175

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/27

Showing 1-10 of 18 results
1
2

Compare providers for flights from Los Angeles to Ontario

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Los Angeles to Ontario in December.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Los Angeles-Ontario flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Los Angeles-Ontario flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Los Angeles-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Los Angeles-Ontario flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Los Angeles-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Los Angeles to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Los Angeles 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 Los Angeles to Ontario

What is the cheapest month to book a flight from Los Angeles to Ontario?

Currently, March is the cheapest month in which you can book a flight from Los Angeles to Ontario (average of $100). Flying from Los Angeles to Ontario in August is currently the most expensive (average of $444). 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.

Related info for your journey

Find useful and relevant information for your journey from Los Angeles to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Los Angeles to Ontario that include hotel bookings?

    Yes. In addition to deals on Los Angeles to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Los Angeles to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Los Angeles to Ontario.

  • Can I find deals for business class flights from Los Angeles to Ontario?

    Yes. Cheapflights offers flight deals from Los Angeles to Ontario 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 Los Angeles to Ontario?

    Currently, March is the cheapest month in which you can book a flight from Los Angeles to Ontario (average of $100). Flying from Los Angeles to Ontario in August is currently the most expensive (average of $444). 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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