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$75+ 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 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LAX
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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1. Tell us where you want to go

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2. Select your favorite providers

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Cheap 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 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 2/243:22 pm
ONT
-
LAX
1 stop16h 53m
Multiple Airlines
Tue 3/31:51 pm
LAX
-
ONT
1 stop7h 43m
Multiple Airlines
Deal found 1/27$113
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 2/253:22 pm
ONT
-
LAX
1 stop15h 59m
Frontier
Wed 3/46:20 am
LAX
-
ONT
1 stop15h 14m
Frontier
Deal found 1/28$117
This Kiwi.com deal was found by Cheapflights users on 1/29. 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 2/267:22 pm
ONT
-
LAX
1 stop11h 27m
Frontier
Thu 3/59:06 pm
LAX
-
ONT
1 stop18h 31m
Frontier
Deal found 1/29$132
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.
Thu 3/192:06 pm
ONT
-
LAX
1 stop18h 05m
Multiple Airlines
Mon 3/239:12 am
LAX
-
ONT
1 stop6h 25m
Multiple Airlines
Deal found 1/28$167
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 2/117:17 pm
ONT
-
LAX
1 stop12h 58m
Multiple Airlines
Sat 2/146:33 pm
LAX
-
ONT
1 stop27h 00m
Multiple Airlines
Deal found 1/28$168
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.
Thu 3/192:06 pm
ONT
-
LAX
1 stop26h 27m
Frontier
Mon 3/2310:33 pm
LAX
-
ONT
2 stops25h 26m
Frontier
Deal found 1/28$199
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 5/811:44 am
ONT
-
LAX
1 stop20h 31m
Multiple Airlines
Mon 5/111:19 pm
LAX
-
ONT
1 stop6h 45m
Multiple Airlines
Deal found 1/28$203
This Kiwi.com deal was found by Cheapflights users on 1/26. 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.
Fri 2/610:18 am
ONT
-
LAX
1 stop6h 47m
Frontier
Sun 2/812:28 pm
LAX
-
ONT
1 stop7h 04m
Frontier
Deal found 1/26$214

Find 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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$113
(Kiwi.com)

One-way from

$75
(Kiwi.com)
Provider with most accurate pricing for Ontario-Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Los Angeles flights.
Search Deals
From Ontario to Los Angeles
Search Deals
One-way flight from Ontario to Los Angeles
Search Deals

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 January 29, 2026.
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

Tue 2/24

3:22 pm-8:15 am

1 stop16h 53m

Los Angeles

Tue 3/3

1:51 pm-9:34 pm

1 stop7h 43m

$113

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Wed 2/25

3:22 pm-7:21 am

1 stop15h 59m

Los Angeles

Wed 3/4

6:20 am-9:34 pm

1 stop15h 14m

$117

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Thu 2/26

7:22 pm-6:49 am

1 stop11h 27m

Los Angeles

Thu 3/5

9:06 pm-3:37 pm

1 stop18h 31m

$132

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Thu 3/19

2:06 pm-8:11 am

1 stop18h 05m

Los Angeles

Mon 3/23

9:12 am-3:37 pm

1 stop6h 25m

$167

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Wed 2/11

7:17 pm-8:15 am

1 stop12h 58m

Los Angeles

Sat 2/14

6:33 pm-9:33 pm

1 stop27h 00m

$168

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Thu 3/19

2:06 pm-4:33 pm

1 stop26h 27m

Los Angeles

Mon 3/23

10:33 pm-11:59 pm

2 stops25h 26m

$199

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Fri 5/8

11:44 am-8:15 am

1 stop20h 31m

Los Angeles

Mon 5/11

1:19 pm-8:04 pm

1 stop6h 45m

$203

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Wed 2/4

3:07 pm-8:22 am

1 stop17h 15m

$75

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Sun 2/15

10:18 pm-8:15 am

1 stop9h 57m

$89

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Fri 3/20

3:30 pm-3:06 pm

1 stop23h 36m

$114

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 15 results
1
2

Compare providers for flights from Ontario to Los Angeles

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 Ontario to Los Angeles in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 Ontario-Los Angeles flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Los Angeles flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Los Angeles flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Los Angeles 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 Ontario-Los Angeles 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 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, March is the cheapest month in which you can book a flight from Ontario to Los Angeles (average of $100). Flying from Ontario to Los Angeles 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 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 15h 59m. 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, March is the cheapest month in which you can book a flight from Ontario to Los Angeles (average of $100). Flying from Ontario to Los Angeles 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

Traveling to a place near Los Angeles?

Book flights to Los Angeles if you plan to visit one of these locations
Downey
Oceanside
Inglewood
Universal City
Avalon
El Segundo
Torrance
Hesperia
Glendale
Buena Park
Lancaster
Redondo Beach
Montebello
West Hollywood
Garden Grove
Manhattan Beach
Moreno Valley
Oxnard
Rancho Cucamonga
Rosemead

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