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Ontario

$66+ 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 2/19. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — ONT
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Find cheap flights from Los Angeles to Ontario with Cheapflights

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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 January 29, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/27. 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 2/249:12 am
LAX
-
ONT
1 stop4h 40m
Multiple Airlines
Tue 3/38:40 am
ONT
-
LAX
1 stop12h 35m
Multiple Airlines
Deal found 1/27$116
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 2/256:20 am
LAX
-
ONT
1 stop15h 14m
Frontier
Wed 3/48:40 am
ONT
-
LAX
1 stop11h 52m
Frontier
Deal found 1/28$118
This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
Sat 2/289:12 am
LAX
-
ONT
1 stop3h 59m
Multiple Airlines
Mon 3/23:28 pm
ONT
-
LAX
1 stop16h 47m
Multiple Airlines
Deal found 1/27$129
This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
Fri 2/2010:59 pm
LAX
-
ONT
1 stop14h 12m
Multiple Airlines
Sun 2/2210:18 pm
ONT
-
LAX
1 stop9h 57m
Multiple Airlines
Deal found 1/27$132
This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
Thu 2/59:17 am
LAX
-
ONT
1 stop10h 36m
Multiple Airlines
Mon 2/98:05 pm
ONT
-
LAX
1 stop12h 17m
Multiple Airlines
Deal found 1/27$140
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 2/279:12 am
LAX
-
ONT
1 stop4h 14m
Multiple Airlines
Sun 3/110:14 pm
ONT
-
LAX
1 stop10h 01m
Multiple Airlines
Deal found 1/28$147
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 2/114:07 pm
LAX
-
ONT
1 stop21h 04m
Multiple Airlines
Sat 2/148:09 pm
ONT
-
LAX
1 stop12h 06m
Multiple Airlines
Deal found 1/28$159
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 2/2710:59 pm
LAX
-
ONT
1 stop14h 12m
Frontier
Fri 3/66:15 am
ONT
-
LAX
1 stop18h 01m
Frontier
Deal found 1/28$161
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 2/34:07 pm
LAX
-
ONT
1 stop22h 05m
Multiple Airlines
Thu 2/58:48 pm
ONT
-
LAX
1 stop12h 39m
Multiple Airlines
Deal found 1/27$171

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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$116
(Kiwi.com)

One-way from

$66
(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 January 29, 2026.
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

Tue 2/24

9:12 am-1:52 pm

1 stop4h 40m

Ontario

Tue 3/3

8:40 am-9:15 pm

1 stop12h 35m

$116

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Wed 2/25

6:20 am-9:34 pm

1 stop15h 14m

Ontario

Wed 3/4

8:40 am-8:32 pm

1 stop11h 52m

$118

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Tue 2/24

4:40 pm-9:34 pm

2 stops28h 54m

Ontario

Tue 3/3

8:40 am-9:15 pm

1 stop12h 35m

$132

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Fri 2/20

10:59 pm-1:11 pm

1 stop14h 12m

Ontario

Sun 2/22

10:18 pm-8:15 am

1 stop9h 57m

$132

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Fri 2/27

9:12 am-1:26 pm

1 stop4h 14m

Ontario

Sun 3/1

10:14 pm-8:15 am

1 stop10h 01m

$147

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Sat 2/28

3:22 pm-7:59 am

2 stops16h 37m

Ontario

Mon 3/2

6:43 pm-8:15 am

1 stop13h 32m

$153

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Wed 2/11

4:07 pm-1:11 pm

1 stop21h 04m

Ontario

Sat 2/14

8:09 pm-8:15 am

1 stop12h 06m

$159

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Fri 2/27

10:59 pm-1:11 pm

1 stop14h 12m

Ontario

Fri 3/6

6:15 am-12:16 am

1 stop18h 01m

$161

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Sat 3/14

9:12 am-6:36 pm

1 stop9h 24m

Ontario

Sun 3/22

1:55 pm-4:33 pm

1 stop26h 38m

$175

Los AngelesOntario

LAX - ONT

LAXONT

Los Angeles

Thu 3/26

4:07 pm-8:06 am

1 stop15h 59m

Ontario

Tue 3/31

2:23 pm-3:06 pm

1 stop24h 43m

$177

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 19 results
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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 January.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Los Angeles-Ontario flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.

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

    Frontier can get you from Los Angeles to Ontario in just under 15h 14m. 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, 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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