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$60+ 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 9/28. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — ONT
oct. 15 — oct. 221
mié. 10/15
mié. 10/22
1 adult, Economy
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Cheap 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 septiembre 15, 2025.

Round-trip from

$139
(Kiwi.com)

One-way from

$60
(Kiwi.com)
From Los Angeles to Ontario
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One-way flight from Los Angeles to Ontario
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Find 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 septiembre 15, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/13. 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.
jue. 10/26:15 amLAX - ONT
1 stop5h 23mMultiple Airlines
lun. 10/610:28 pmONT - LAX
1 stop22h 57mMultiple Airlines
Deal found 9/13$114
This Kiwi.com deal was found by Cheapflights users on 9/13. 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.
sáb. 10/43:32 pmLAX - ONT
1 stop6h 24mMultiple Airlines
mar. 10/78:00 amONT - LAX
1 stop13h 25mMultiple Airlines
Deal found 9/13$128
This Kiwi.com deal was found by Cheapflights users on 9/13. 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.
sáb. 10/113:48 pmLAX - ONT
1 stop4h 54mFrontier
sáb. 10/181:37 pmONT - LAX
1 stop6h 16mFrontier
Deal found 9/13$134
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.
dom. 9/288:14 pmLAX - ONT
1 stop11h 03mMultiple Airlines
mar. 9/308:00 amONT - LAX
1 stop5h 33mMultiple Airlines
Deal found 9/15$139
This Kiwi.com deal was found by Cheapflights users on 9/12. 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.
mié. 10/226:45 amLAX - ONT
1 stop17h 05mFrontier
dom. 10/266:44 pmONT - LAX
1 stop17h 30mFrontier
Deal found 9/12$152
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.
vie. 10/38:55 pmLAX - ONT
1 stop15h 48mMultiple Airlines
lun. 10/2010:50 pmONT - LAX
1 stop14h 42mMultiple Airlines
Deal found 9/15$158
This Kiwi.com deal was found by Cheapflights users on 9/13. 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.
sáb. 11/12:38 pmLAX - ONT
1 stop9h 12mFrontier
dom. 11/25:53 amONT - LAX
1 stop17h 32mFrontier
Deal found 9/13$171

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 septiembre 15, 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

jue. 10/2

6:15 am-11:38 am

1 stop5h 23m

Ontario

lun. 10/6

10:28 pm-9:25 pm

1 stop22h 57m

$114

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

sáb. 10/4

3:32 pm-9:56 pm

1 stop6h 24m

Ontario

mar. 10/7

8:00 am-9:25 pm

1 stop13h 25m

$128

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

sáb. 10/11

3:48 pm-8:42 pm

1 stop4h 54m

Ontario

sáb. 10/18

1:37 pm-7:53 pm

1 stop6h 16m

$134

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

dom. 9/28

8:14 pm-7:17 am

1 stop11h 03m

Ontario

mar. 9/30

8:00 am-1:33 pm

1 stop5h 33m

$139

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

mié. 10/22

6:45 am-11:50 pm

1 stop17h 05m

Ontario

dom. 10/26

6:44 pm-12:14 pm

1 stop17h 30m

$152

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

vie. 10/3

8:55 pm-12:43 pm

1 stop15h 48m

Ontario

lun. 10/20

10:50 pm-1:32 pm

1 stop14h 42m

$158

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

lun. 10/13

9:17 pm-11:50 pm

1 stop26h 33m

Ontario

lun. 10/20

10:50 pm-1:32 pm

1 stop14h 42m

$162

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

sáb. 11/1

2:38 pm-11:50 pm

1 stop9h 12m

Ontario

dom. 11/2

5:53 am-11:25 pm

1 stop17h 32m

$171

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

dom. 9/28

6:15 am-7:17 am

1 stop25h 02m

$60

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

jue. 11/20

2:58 pm-11:57 pm

1 stop8h 59m

$91

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 14 results
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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, August is the cheapest month in which you can book a flight from Los Angeles to Ontario (average of $246). Flying from Los Angeles to Ontario in March is currently the most expensive (average of $328). 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.

  • How long is the flight from Los Angeles to Ontario?

    Frontier can get you from Los Angeles to Ontario in just under 4h 54m. Your travel time can differ by up to . Los Angeles and Ontario are separated by a distance of 47 mi.

  • 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, August is the cheapest month in which you can book a flight from Los Angeles to Ontario (average of $246). Flying from Los Angeles to Ontario in March is currently the most expensive (average of $328). 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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