$43+ Cheap flights from Los Angeles to Ontario (LAX - ONT)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/5. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — ONT
Dec 5 — Dec 121
Round-trip
1 adult, Economy
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Find cheap flights from Los Angeles to Ontario 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 Los Angeles to Ontario
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Cheapest flights from Los Angeles to OntarioExplore 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 November 5, 2026.
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 November 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 11/2. 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.
Wed 12/27:00 am -
1 stop5h 39m
Wed 12/911:00 am -
1 stop4h 25m
Deal found 11/2![Frontier logo]()
$83
This Kiwi.com deal was found by Cheapflights users on 11/1. 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 11/238:23 am -
1 stop6h 28m
Wed 11/258:15 am -
1 stop7h 22m
Deal found 11/1![Frontier logo]()
$95
This Kiwi.com deal was found by Cheapflights users on 11/3. 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 12/312:31 pm -
1 stop5h 40m
Mon 12/77:26 pm -
1 stop27h 38m
Deal found 11/3![Frontier logo]()
$100
This Kiwi.com deal was found by Cheapflights users on 11/1. 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 12/76:40 pm -
1 stop4h 43m
Sun 12/137:26 pm -
1 stop27h 38m
Deal found 11/1![Frontier logo]()
$102
This Kiwi.com deal was found by Cheapflights users on 11/1. 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 11/248:23 am -
1 stop11h 13m
Wed 11/258:15 am -
1 stop7h 22m
Deal found 11/1![Frontier logo]()
$111
This Kiwi.com deal was found by Cheapflights users on 10/31. 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 11/2112:56 pm -
1 stop11h 28m
Mon 11/232:01 pm -
1 stop17h 47m
Deal found 10/31![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 11/1. 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 11/2312:56 pm -
1 stop11h 28m
Tue 11/244:13 pm -
2 stops15h 07m
Deal found 11/1![Frontier logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 11/1. 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.
Wed 11/185:15 pm -
1 stop18h 01m
Wed 11/258:15 am -
1 stop7h 22m
Deal found 11/1![Frontier logo]()
$135
Best flights from Los Angeles to OntarioDiscover carefully curated flight deals from Los Angeles to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 5, 2026.
Discover carefully curated flight deals from Los Angeles to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 11/4. 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.
Thu 12/37:00 am -
1 stop6h 00m
Mon 12/77:26 pm -
1 stop27h 38m
Deal found 11/4![Frontier logo]()
$100
This eDestinos deal was found by Cheapflights users on 11/3. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/267:41 pm -
1 stop11h 39m
Thu 12/37:06 pm -
1 stop21h 26m
Deal found 11/3![Multiple Airlines logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 11/1. 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 12/76:40 pm -
1 stop4h 43m
Sun 12/137:26 pm -
1 stop27h 38m
Deal found 11/1![Frontier logo]()
$102
This Kiwi.com deal was found by Cheapflights users on 10/31. 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 11/218:15 am -
2 stops16h 09m
Mon 11/232:01 pm -
1 stop17h 47m
Deal found 10/31![Frontier logo]()
$128
This eDestinos deal was found by Cheapflights users on 11/4. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2611:43 am -
2 stops12h 31m
Thu 12/38:00 am -
1 stop7h 32m
Deal found 11/4![Frontier logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 11/1. 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 11/248:23 am -
1 stop11h 13m
Mon 11/302:01 pm -
2 stops17h 19m
Deal found 11/1![Frontier logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 11/3. 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 11/258:23 am -
1 stop11h 13m
Mon 11/302:01 pm -
1 stop18h 14m
Deal found 11/3![Frontier logo]()
$156
Last-minute flights from Los Angeles to OntarioDiscover last-minute flight deals from Los Angeles to Ontario. Data last updated November 5, 2026 and is based on user searches.
Discover last-minute flight deals from Los Angeles to Ontario. Data last updated November 5, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 11/1. 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.
Wed 11/185:15 pm -
1 stop18h 01m
Wed 11/258:15 am -
1 stop7h 22m
Deal found 11/1![Frontier logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 10/31. 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 11/2112:56 pm -
1 stop11h 28m
Mon 11/232:01 pm -
1 stop17h 47m
Deal found 10/31![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 11/1. 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 11/238:23 am -
1 stop6h 28m
Wed 11/258:15 am -
1 stop7h 22m
Deal found 11/1![Frontier logo]()
$95
This Kiwi.com deal was found by Cheapflights users on 11/1. 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 11/2312:56 pm -
1 stop11h 28m
Tue 11/244:13 pm -
2 stops15h 07m
Deal found 11/1![Frontier logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 11/1. 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 11/248:23 am -
1 stop11h 13m
Wed 11/258:15 am -
1 stop7h 22m
Deal found 11/1![Frontier logo]()
$111
This Kiwi.com deal was found by Cheapflights users on 11/2. 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.
Wed 12/27:00 am -
1 stop5h 39m
Wed 12/911:00 am -
1 stop4h 25m
Deal found 11/2![Frontier logo]()
$83
This Kiwi.com deal was found by Cheapflights users on 11/3. 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 12/312:31 pm -
1 stop5h 40m
Mon 12/77:26 pm -
1 stop27h 38m
Deal found 11/3![Frontier logo]()
$100
This Kiwi.com deal was found by Cheapflights users on 11/1. 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 12/76:40 pm -
1 stop4h 43m
Sun 12/137:26 pm -
1 stop27h 38m
Deal found 11/1![Frontier logo]()
$102
One-way flights from Los Angeles to OntarioSearch for one-way flight options from Los Angeles to Ontario. Find affordable one-way fares based on user searches. Data last updated November 5, 2026.
Search for one-way flight options from Los Angeles to Ontario. Find affordable one-way fares based on user searches. Data last updated November 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 11/3. 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 1/57:15 am -
1 stop6h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Frontier logo]()
$43
This Kiwi.com deal was found by Cheapflights users on 11/3. 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 11/1810:05 am -
1 stop6h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Frontier logo]()
$53
This Kiwi.com deal was found by Cheapflights users on 11/1. 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 11/248:23 am -
1 stop11h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Frontier logo]()
$69
This Frontier deal was found by Cheapflights users on 11/3. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2012:15 pm -
1 stop7h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Frontier logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 11/3. 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 11/1811:55 am -
2 stops28h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Multiple Airlines logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 11/1. 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 1/511:10 pm -
3 stops25h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Multiple Airlines logo]()
$249
This Kiwi.com deal was found by Cheapflights users on 11/2. 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.
Tue 12/111:40 pm -
3 stops35h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Multiple Airlines logo]()
$272
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 November 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $83 (Kiwi.com) |
One-way from | $43 (Kiwi.com) |
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 7,457,451 searches. Data last updated November 5, 2026.
Use the filters below to find and compare flights from Los Angeles to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
Los AngelesOntario
LAX Los Angeles - ONT Ontario
LAXONT
Los Angeles
Tue 12/1
7:00 am-12:39 pm
1 stop5h 39m
Ontario
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$43
Los AngelesOntario
LAX Los Angeles - ONT Ontario
LAXONT
Los Angeles
Tue 1/5
9:34 am-8:05 am
1 stop22h 31m
Ontario
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$43
Los AngelesOntario
LAX Los Angeles - ONT Ontario
LAXONT
Los Angeles
Tue 11/24
8:23 am-7:36 pm
1 stop11h 13m
Ontario
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$44
Los AngelesOntario
LAX Los Angeles - ONT Ontario
LAXONT
Los Angeles
Wed 11/18
10:05 am-4:21 pm
1 stop6h 16m
Ontario
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$53
Los AngelesOntario
LAX Los Angeles - ONT Ontario
LAXONT
Los Angeles
Thu 12/3
7:00 am-1:00 pm
1 stop6h 00m
Ontario
Mon 12/7
7:26 pm-11:04 pm
1 stop27h 38m
$100
Los AngelesOntario
LAX Los Angeles - ONT Ontario
LAXONT
Los Angeles
Mon 12/7
6:40 pm-11:23 pm
1 stop4h 43m
Ontario
Sun 12/13
7:26 pm-11:04 pm
1 stop27h 38m
$102
Los AngelesOntario
LAX Los Angeles - ONT Ontario
LAXONT
Los Angeles
Sat 11/21
8:15 am-12:24 am
2 stops16h 09m
Ontario
Mon 11/23
2:01 pm-7:48 am
1 stop17h 47m
$128
Los AngelesOntario
LAX Los Angeles - ONT Ontario
LAXONT
Los Angeles
Thu 11/26
11:43 am-12:14 am
2 stops12h 31m
Ontario
Thu 12/3
8:00 am-3:32 pm
1 stop7h 32m
$153
Los AngelesOntario
LAX Los Angeles - ONT Ontario
LAXONT
Los Angeles
Tue 11/24
8:23 am-7:36 pm
1 stop11h 13m
Ontario
Mon 11/30
2:01 pm-7:20 am
2 stops17h 19m
$154
Los AngelesOntario
LAX Los Angeles - ONT Ontario
LAXONT
Los Angeles
Wed 11/25
8:23 am-7:36 pm
1 stop11h 13m
Ontario
Mon 11/30
2:01 pm-8:15 am
1 stop18h 14m
$156
Showing 1-10 of 11 resultsSorted by cheapest first
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 November.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
- 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.
LAX-ONT
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
How often are flights from Los Angeles to Ontario delayed?
About 6% of weekly flights between Los Angeles and Ontario have experienced delays in the past year, with the average delay time being 88 minutes.
What is the most punctual flight time for Los Angeles to Ontario 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.
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.
Browse thousands of different options on Cheapflights for your next trip
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