$65+ 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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LAX
Sep 4 — Sep 111
Round-trip
1 adult, Economy
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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
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Best
Last-minute
One-way
Cheapest flights from Ontario to Los AngelesExplore 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 August 5, 2026.
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 August 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 8/298:48 am -
1 stop13h 06m
Sat 9/57:13 pm -
1 stop15h 16m
Deal found 8/1![Frontier logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 8/228:48 am -
1 stop13h 06m
Mon 8/2410:22 pm -
1 stop17h 32m
Deal found 7/31![Frontier logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 9/13:13 pm -
1 stop6h 41m
Tue 9/225:20 pm -
1 stop15h 49m
Deal found 8/3![Frontier logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 8/263:13 pm -
1 stop6h 41m
Mon 8/317:07 pm -
1 stop19h 20m
Deal found 8/4![Frontier logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 8/2. 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.
Sun 8/303:40 pm -
1 stop17h 49m
Sun 9/66:30 am -
1 stop17h 20m
Deal found 8/2![Frontier logo]()
$189
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 10/28:24 pm -
1 stop19h 59m
Tue 10/65:20 pm -
1 stop15h 49m
Deal found 8/4![Frontier logo]()
$207
Best flights from Ontario to Los AngelesDiscover carefully curated flight deals from Ontario to Los Angeles that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 5, 2026.
Discover carefully curated flight deals from Ontario to Los Angeles that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 8/228:48 am -
1 stop13h 06m
Mon 8/2410:22 pm -
2 stops15h 41m
Deal found 7/31![Frontier logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 8/263:13 pm -
1 stop6h 41m
Mon 8/3110:22 pm -
2 stops16h 05m
Deal found 8/4![Frontier logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 8/2. 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.
Sun 8/303:40 pm -
1 stop17h 49m
Sun 9/66:30 am -
1 stop17h 20m
Deal found 8/2![Frontier logo]()
$189
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 8/298:48 am -
1 stop13h 06m
Sat 9/54:15 pm -
2 stops17h 49m
Deal found 8/1![Frontier logo]()
$190
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 9/17:56 pm -
2 stops25h 58m
Tue 9/225:20 pm -
1 stop15h 49m
Deal found 8/3![Frontier logo]()
$209
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 8/3111:50 am -
1 stop10h 49m
Mon 9/710:22 pm -
1 stop17h 27m
Deal found 8/2![Frontier logo]()
$219
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 8/2810:17 pm -
2 stops23h 37m
Mon 8/316:55 am -
1 stop9h 27m
Deal found 8/4![Frontier logo]()
$232
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 8/2810:17 pm -
1 stop11h 12m
Fri 9/49:09 pm -
1 stop26h 41m
Deal found 7/31![Frontier logo]()
$233
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 9/410:17 pm -
2 stops17h 03m
Mon 9/710:22 pm -
1 stop17h 27m
Deal found 8/1![Frontier logo]()
$244
Last-minute flights from Ontario to Los AngelesDiscover last-minute flight deals from Ontario to Los Angeles. Data last updated August 5, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Los Angeles. Data last updated August 5, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 8/228:48 am -
1 stop13h 06m
Mon 8/2410:22 pm -
1 stop17h 32m
Deal found 7/31![Frontier logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 8/263:13 pm -
1 stop6h 41m
Mon 8/317:07 pm -
1 stop19h 20m
Deal found 8/4![Frontier logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 8/298:48 am -
1 stop13h 06m
Sat 9/57:13 pm -
1 stop15h 16m
Deal found 8/1![Frontier logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 8/2. 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.
Sun 8/303:40 pm -
1 stop17h 49m
Sun 9/66:30 am -
1 stop17h 20m
Deal found 8/2![Frontier logo]()
$189
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 9/13:13 pm -
1 stop6h 41m
Tue 9/225:20 pm -
1 stop15h 49m
Deal found 8/3![Frontier logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 9/57:56 pm -
1 stop12h 34m
Sat 9/122:01 pm -
1 stop9h 46m
Deal found 7/30![Frontier logo]()
$165
One-way flights from Ontario to Los AngelesSearch for one-way flight options from Ontario to Los Angeles. Find affordable one-way fares based on user searches. Data last updated August 5, 2026.
Search for one-way flight options from Ontario to Los Angeles. Find affordable one-way fares based on user searches. Data last updated August 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 9/1012:07 pm -
1 stop22h 30m
Deal found 8/3![Frontier logo]()
$65
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 9/2112:07 pm -
1 stop22h 30m
Deal found 8/1![Frontier logo]()
$87
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 9/1510:04 am -
1 stop6h 19m
Deal found 8/1![Frontier logo]()
$96
This Kiwi.com deal was found by Cheapflights users on 7/31. 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.
Sun 8/303:40 pm -
1 stop17h 49m
Deal found 7/31![Frontier logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 9/95:44 pm -
1 stop29h 20m
Deal found 8/3![Frontier logo]()
$108
This Kiwi.com deal was found by Cheapflights users on 8/4. 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 8/2410:17 pm -
1 stop11h 12m
Deal found 8/4![Frontier logo]()
$113
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 August 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $141 (Kiwi.com) |
One-way from | $65 (Kiwi.com) |
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 August 5, 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
Cheapest round-trip
OntarioLos Angeles
ONT - LAX
ONTLAX
Ontario
Sat 8/22
8:48 am-9:54 pm
1 stop13h 06m
Los Angeles
Mon 8/24
10:22 pm-2:03 pm
2 stops15h 41m
$176
Quickest round-trip
OntarioLos Angeles
ONT - LAX
ONTLAX
Ontario
Wed 8/26
3:13 pm-9:54 pm
1 stop6h 41m
Los Angeles
Mon 8/31
10:22 pm-2:27 pm
2 stops16h 05m
$180
OntarioLos Angeles
ONT - LAX
ONTLAX
Ontario
Sun 8/30
3:40 pm-9:29 am
1 stop17h 49m
Los Angeles
Sun 9/6
6:30 am-11:50 pm
1 stop17h 20m
$189
OntarioLos Angeles
ONT - LAX
ONTLAX
Ontario
Sat 8/29
8:48 am-9:54 pm
1 stop13h 06m
Los Angeles
Sat 9/5
4:15 pm-10:04 am
2 stops17h 49m
$190
OntarioLos Angeles
ONT - LAX
ONTLAX
Ontario
Tue 9/1
7:56 pm-9:54 pm
2 stops25h 58m
Los Angeles
Tue 9/22
5:20 pm-9:09 am
1 stop15h 49m
$209
OntarioLos Angeles
ONT - LAX
ONTLAX
Ontario
Mon 8/31
11:50 am-10:39 pm
1 stop10h 49m
Los Angeles
Mon 9/7
10:22 pm-3:49 pm
1 stop17h 27m
$219
OntarioLos Angeles
ONT - LAX
ONTLAX
Ontario
Fri 8/28
10:17 pm-9:54 pm
2 stops23h 37m
Los Angeles
Mon 8/31
6:55 am-4:22 pm
1 stop9h 27m
$232
OntarioLos Angeles
ONT - LAX
ONTLAX
Ontario
Fri 8/28
10:17 pm-9:29 am
1 stop11h 12m
Los Angeles
Fri 9/4
9:09 pm-11:50 pm
1 stop26h 41m
$233
OntarioLos Angeles
ONT - LAX
ONTLAX
Ontario
Fri 9/4
10:17 pm-3:20 pm
2 stops17h 03m
Los Angeles
Mon 9/7
10:22 pm-3:49 pm
1 stop17h 27m
$244
Cheapest one-way
Quickest one-way
OntarioLos Angeles
ONT - LAX
ONTLAX
Ontario
Tue 9/15
10:04 am-4:23 pm
1 stop6h 19m
$96
Showing 1-10 of 18 resultsSorted by cheapest first
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 August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
ONT-LAX
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 35% of weekly flights between Ontario and Los Angeles have experienced delays in the past year, with the average delay time being 87 minutes.
What is the most punctual flight time for Ontario to Los Angeles flights?
Historically, flights departing in the evening 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?
Thursday 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 37% 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.
Traveling to a place near Los Angeles?
Book flights to Los Angeles if you plan to visit one of these locationsDowney
Universal City
Avalon
Buena Park
Redondo Beach
Carson
Oxnard
West Hollywood
Oceanside
Inglewood
Stanton
Garden Grove
Rosemead
Torrance
Corona
Glendale
Pomona
Lake Elsinore
Lancaster
El Segundo
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