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$70+ Cheap flights from Ontario to Los Angeles (ONT - LAX)

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 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LAX
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Ontario to Los Angeles

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Los Angeles (LAX). 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 September 15, 2025.

Round-trip from

$163
(Kiwi.com)

One-way from

$70
(Kiwi.com)
From Ontario to Los Angeles
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One-way flight from Ontario to Los Angeles
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Find flight deals from Ontario to Los Angeles

Cheapest flights from Ontario to Los Angeles
Explore the most affordable flight options available from Ontario to Los Angeles. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 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.
Wed 9/248:00 amONT - LAX
1 stop5h 33mMultiple Airlines
Sat 9/276:15 amLAX - ONT
1 stop6h 28mMultiple Airlines
Deal found 9/13$134
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.
Sat 10/111:37 pmONT - LAX
1 stop6h 16mFrontier
Sat 10/183:48 pmLAX - ONT
1 stop15h 49mFrontier
Deal found 9/13$136
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.
Mon 10/2010:50 pmONT - LAX
1 stop14h 42mFrontier
Fri 10/246:47 pmLAX - ONT
1 stop5h 25mFrontier
Deal found 9/13$138
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.
Sat 10/111:37 pmONT - LAX
1 stop6h 16mMultiple Airlines
Sat 10/189:22 amLAX - ONT
1 stop22h 15mMultiple Airlines
Deal found 9/13$146
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.
Fri 9/2610:28 pmONT - LAX
1 stop15h 05mMultiple Airlines
Sun 9/289:36 amLAX - ONT
1 stop21h 41mMultiple Airlines
Deal found 9/12$155
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.
Thu 10/29:16 amONT - LAX
1 stop4h 17mMultiple Airlines
Mon 10/612:41 pmLAX - ONT
1 stop8h 15mMultiple Airlines
Deal found 9/13$163
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.
Wed 9/248:00 amONT - LAX
1 stop5h 33mMultiple Airlines
Fri 9/268:55 pmLAX - ONT
1 stop15h 48mMultiple Airlines
Deal found 9/12$179
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 10/1310:47 pmONT - LAX
1 stop21h 06mFrontier
Mon 10/209:17 pmLAX - ONT
1 stop26h 33mFrontier
Deal found 9/14$180
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 10/96:05 amONT - LAX
1 stop6h 09mFrontier
Thu 10/303:27 pmLAX - ONT
1 stop6h 28mFrontier
Deal found 9/14$182
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.
Fri 9/197:30 pmONT - LAX
2 stops14h 03mMultiple Airlines
Sun 9/217:50 pmLAX - ONT
1 stop11h 27mMultiple Airlines
Deal found 9/13$188

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Los Angeles 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 September 15, 2025.
Use the filters below to find and compare flights from Ontario to Los Angeles that are best for you.

Fly from

Ontario

Fly to

Los Angeles

Route

Depart

Return

Price

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Wed 9/24

8:00 am-1:33 pm

1 stop5h 33m

Los Angeles

Sat 9/27

6:15 am-12:43 pm

1 stop6h 28m

$134

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Mon 10/20

10:50 pm-1:32 pm

1 stop14h 42m

Los Angeles

Fri 10/24

6:47 pm-12:12 am

1 stop5h 25m

$138

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Sat 10/11

1:37 pm-7:53 pm

1 stop6h 16m

Los Angeles

Sat 10/18

9:22 am-7:37 am

1 stop22h 15m

$146

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Fri 9/26

10:28 pm-1:33 pm

1 stop15h 05m

Los Angeles

Sun 9/28

9:36 am-7:17 am

1 stop21h 41m

$155

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Thu 10/2

9:16 am-1:33 pm

1 stop4h 17m

Los Angeles

Mon 10/6

12:41 pm-8:56 pm

1 stop8h 15m

$163

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Wed 9/24

8:00 am-1:33 pm

1 stop5h 33m

Los Angeles

Fri 9/26

8:55 pm-12:43 pm

1 stop15h 48m

$179

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Thu 10/9

6:05 am-12:14 pm

1 stop6h 09m

Los Angeles

Thu 10/30

3:27 pm-9:55 pm

1 stop6h 28m

$182

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Fri 9/19

7:30 pm-9:33 am

2 stops14h 03m

Los Angeles

Sun 9/21

7:50 pm-7:17 am

1 stop11h 27m

$188

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Sat 10/11

1:37 pm-7:53 pm

1 stop6h 16m

Los Angeles

Sat 10/18

7:00 pm-9:35 am

2 stops14h 35m

$195

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Sun 11/2

10:43 pm-1:07 pm

1 stop14h 24m

$70

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/12

Showing 1-10 of 17 results
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Best time to book a flight from Ontario to Los Angeles

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

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

Currently, January is the cheapest month in which you can book a flight from Ontario to Los Angeles (average of $246). Flying from Ontario to Los Angeles in March is currently the most expensive (average of $325). 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 Ontario to Los Angeles. 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 Ontario to Los Angeles?

    Departing from Ontario to Los Angeles will take you 14h 42m. The distance between Ontario and Los Angeles is about 47 mi.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Ontario to Los Angeles (average of $246). Flying from Ontario to Los Angeles in March is currently the most expensive (average of $325). 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

Traveling to a place near Los Angeles?

Book flights to Los Angeles if you plan to visit one of these locations
Stanton
Inglewood
Oceanside
El Segundo
Buena Park
Avalon
Torrance
Moreno Valley
Hesperia
Downey
Montebello
Universal City
Garden Grove
Manhattan Beach
San Gabriel
West Hollywood
Glendale
Lancaster
Rowland Heights
Santa Clarita

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