HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Los Angeles

$76+ 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 7/7. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LAX
Jul 19 — Jul 261
Sun 7/19
Sun 7/26
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Los Angeles with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 June 19, 2026.

This Kiwi.com deal was found by Cheapflights users on 6/16. 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 7/143:40 pm
ONT
-
LAX
1 stop4h 23m
Frontier
Tue 7/217:07 pm
LAX
-
ONT
1 stop17h 46m
Frontier
Deal found 6/16$127
This Kiwi.com deal was found by Cheapflights users on 6/14. 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.
Wed 7/11:33 pm
ONT
-
LAX
1 stop5h 27m
Frontier
Wed 7/86:30 am
LAX
-
ONT
1 stop8h 44m
Frontier
Deal found 6/14$142
This Kiwi.com deal was found by Cheapflights users on 6/17. 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 7/11:33 pm
ONT
-
LAX
1 stop5h 27m
Frontier
Sat 7/412:14 pm
LAX
-
ONT
1 stop7h 37m
Frontier
Deal found 6/17$179
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
Tue 7/143:40 pm
ONT
-
LAX
1 stop4h 23m
Frontier
Sat 8/89:05 pm
LAX
-
ONT
1 stop12h 59m
Frontier
Deal found 6/15$186
This Kiwi.com deal was found by Cheapflights users on 6/16. 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 8/68:58 am
ONT
-
LAX
1 stop12h 50m
Frontier
Mon 8/107:07 pm
LAX
-
ONT
1 stop17h 41m
Frontier
Deal found 6/16$200
This Kiwi.com deal was found by Cheapflights users on 6/17. 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 7/158:58 am
ONT
-
LAX
1 stop13h 01m
Frontier
Wed 7/221:56 pm
LAX
-
ONT
2 stops9h 54m
Frontier
Deal found 6/17$202
This Kiwi.com deal was found by Cheapflights users on 6/14. 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.
Wed 9/306:00 am
ONT
-
LAX
1 stop7h 44m
Frontier
Mon 10/58:51 pm
LAX
-
ONT
1 stop27h 04m
Frontier
Deal found 6/14$207
This Kiwi.com deal was found by Cheapflights users on 6/16. 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 9/106:00 am
ONT
-
LAX
1 stop7h 44m
Frontier
Mon 9/148:51 pm
LAX
-
ONT
1 stop27h 04m
Frontier
Deal found 6/16$236
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
Thu 8/68:58 am
ONT
-
LAX
1 stop12h 56m
Frontier
Sat 8/89:05 pm
LAX
-
ONT
1 stop12h 59m
Frontier
Deal found 6/15$238
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
Thu 8/138:58 am
ONT
-
LAX
1 stop12h 56m
Frontier
Sat 8/156:30 am
LAX
-
ONT
1 stop8h 44m
Frontier
Deal found 6/15$241

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 June 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$127
(Kiwi.com)

One-way from

$76
(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 June 19, 2026.
Use the filters below to find and compare flights from Ontario to Los Angeles that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Wed 7/1

1:33 pm-7:00 pm

1 stop5h 27m

Los Angeles

Wed 7/8

6:30 am-3:14 pm

1 stop8h 44m

$142

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Tue 7/14

3:40 pm-8:03 pm

1 stop4h 23m

Los Angeles

Tue 7/21

1:56 pm-8:03 am

2 stops18h 07m

$164
Quickest round-trip

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Wed 7/1

1:33 pm-7:00 pm

1 stop5h 27m

Los Angeles

Sat 7/4

12:14 pm-7:51 pm

1 stop7h 37m

$179

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Thu 8/6

8:58 am-9:48 pm

1 stop12h 50m

Los Angeles

Mon 8/10

7:07 pm-12:48 pm

1 stop17h 41m

$200

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Wed 7/15

8:58 am-9:59 pm

1 stop13h 01m

Los Angeles

Wed 7/22

1:56 pm-11:50 pm

2 stops9h 54m

$202

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Sun 8/16

4:34 pm-9:30 am

1 stop16h 56m

Los Angeles

Sun 8/23

2:54 pm-10:05 am

1 stop19h 11m

$284

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Sun 7/19

3:40 pm-9:25 am

1 stop17h 45m

Los Angeles

Sat 7/25

7:07 pm-11:07 am

1 stop16h 00m

$309

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Wed 7/1

1:33 pm-7:00 pm

1 stop5h 27m

Los Angeles

Sun 7/5

9:09 pm-8:03 am

1 stop10h 54m

$336

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Sun 7/12

3:40 pm-9:25 am

1 stop17h 45m

Los Angeles

Mon 7/13

7:07 pm-12:53 pm

1 stop17h 46m

$339

OntarioLos Angeles

ONT - LAX

ONTLAX

Ontario

Thu 7/16

8:58 am-9:59 pm

1 stop13h 01m

Los Angeles

Sun 8/30

8:15 pm-3:09 pm

1 stop18h 54m

$344

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/16

Showing 1-10 of 18 resultsSorted by cheapest first
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 June.
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

How often are flights from Ontario to Los Angeles delayed?

About 33% of weekly flights between Ontario and Los Angeles have experienced delays in the past year, with the average delay time being 80 minutes.

What is the most punctual flight time for Ontario to Los Angeles flights?

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Saturday tends to have the lowest number of delays on this route, whereas Tuesday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Ontario to Los Angeles flights?

Over the last year, American Airlines have had the lowest number of delays on this route, with just 36% of flights being delayed.

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 5h 27m. 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.

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
Avalon
Buena Park
Oceanside
Inglewood
Carson
Universal City
Garden Grove
Hesperia
Stanton
El Segundo
Torrance
Oxnard
Glendale
Westminster
Fountain Valley
Lake Elsinore
Redondo Beach
Lancaster
Compton

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Los Angeles

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Las Vegas flights
San Francisco to Las Vegas flights
Los Angeles to San Francisco flights
San Francisco to Los Angeles flights
San Francisco to Ontario flights
Santa Rosa to Las Vegas flights
Ontario to San Francisco flights
San Jose to Las Vegas flights
Santa Rosa to San Diego flights
San Francisco to San Diego flights
Santa Ana to San Francisco flights
Santa Ana to Las Vegas flights
San Francisco to Santa Ana flights
San Jose to Los Angeles flights
Los Angeles to San Jose flights
Burbank to Las Vegas flights
Burbank to San Francisco flights
Sacramento to Las Vegas flights
Oakland to Las Vegas flights
San Diego to Las Vegas flights
San Diego to San Francisco flights
Las Vegas to Los Angeles flights
San Francisco to Burbank flights
San Jose to Santa Ana flights
San Jose to Ontario flights
Ontario to Las Vegas flights
San Jose to San Diego flights
Los Angeles to Sacramento flights
Oakland to San Diego flights
Ontario to San Jose flights
Sacramento to Los Angeles flights
Las Vegas to San Francisco flights
Santa Ana to San Jose flights
Reno to Las Vegas flights
Stockton to Las Vegas flights
Las Vegas to Reno flights
Fresno to Las Vegas flights
Los Angeles to Reno flights
Sacramento to San Diego flights
Las Vegas to Ontario flights
San Francisco to Palm Springs flights
San Diego to San Jose flights
San Jose to Burbank flights
Las Vegas to Santa Ana flights
Burbank to San Jose flights
Las Vegas to San Diego flights
Burbank to Sacramento flights
San Diego to Sacramento flights
Sacramento to Ontario flights
Reno to Los Angeles flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.