$196+ Cheap flights from Peoria, IL to Ontario (PIA - 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 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
PIA — ONT
Oct 14 — Oct 211
Round-trip
1 adult, Economy
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Find cheap flights from Peoria 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 Peoria to Ontario
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Best
Last-minute
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Cheapest flights from Peoria to OntarioExplore the most affordable flight options available from Peoria to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 14, 2026.
Explore the most affordable flight options available from Peoria to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 14, 2026.
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/224:43 pm -
1 stop7h 53m
Tue 12/12:09 pm -
1 stop7h 02m
Deal found 9/12![American Airlines logo]()
$379
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/103:41 pm -
1 stop9h 08m
Sat 10/175:00 am -
2 stops12h 01m
Deal found 9/10![United Airlines logo]()
$404
This American Airlines deal was found by Cheapflights users on 9/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/264:43 pm -
1 stop7h 54m
Wed 9/302:22 pm -
1 stop6h 53m
Deal found 9/11![American Airlines logo]()
$449
This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/104:42 pm -
1 stop9h 10m
Sat 10/176:00 am -
1 stop7h 53m
Deal found 9/10![American Airlines logo]()
$450
This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/68:41 am -
1 stop5h 49m
Mon 11/96:37 pm -
2 stops13h 31m
Deal found 9/11![United Airlines logo]()
$453
This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2610:43 am -
2 stops12h 15m
Wed 9/301:24 pm -
1 stop5h 27m
Deal found 9/11![United Airlines logo]()
$454
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/298:45 am -
2 stops10h 56m
Sat 10/311:10 am -
2 stops9h 48m
Deal found 9/14![United Airlines logo]()
$459
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/48:41 am -
2 stops11h 20m
Tue 11/101:29 pm -
1 stop5h 37m
Deal found 9/10![United Airlines logo]()
$464
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/38:41 am -
1 stop5h 52m
Tue 11/101:29 pm -
1 stop5h 37m
Deal found 9/12![United Airlines logo]()
$479
This American Airlines deal was found by Cheapflights users on 9/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/64:43 pm -
1 stop9h 03m
Mon 11/912:42 pm -
1 stop8h 27m
Deal found 9/11![American Airlines logo]()
$525
Best flights from Peoria to OntarioDiscover carefully curated flight deals from Peoria to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 14, 2026.
Discover carefully curated flight deals from Peoria to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 14, 2026.
This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/104:42 pm -
1 stop9h 10m
Sat 10/176:00 am -
1 stop7h 53m
Deal found 9/10![American Airlines logo]()
$450
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/294:05 pm -
1 stop8h 44m
Sat 10/311:10 am -
2 stops9h 48m
Deal found 9/14![United Airlines logo]()
$454
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/48:41 am -
1 stop5h 52m
Tue 11/101:29 pm -
1 stop5h 37m
Deal found 9/10![United Airlines logo]()
$459
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/238:14 am -
2 stops11h 33m
Tue 1/2611:20 am -
2 stops9h 46m
Deal found 9/10![United Airlines logo]()
$469
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/38:41 am -
2 stops13h 34m
Tue 11/101:29 pm -
1 stop5h 37m
Deal found 9/12![United Airlines logo]()
$484
Last-minute flights from Peoria to OntarioDiscover last-minute flight deals from Peoria to Ontario. Data last updated September 14, 2026 and is based on user searches.
Discover last-minute flight deals from Peoria to Ontario. Data last updated September 14, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/194:43 pm -
1 stop7h 54m
Fri 9/252:22 pm -
1 stop6h 53m
Deal found 9/11![American Airlines logo]()
$541
This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/196:05 am -
2 stops8h 45m
Fri 9/256:32 pm -
2 stops13h 34m
Deal found 9/11![United Airlines logo]()
$599
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/254:05 pm -
1 stop8h 44m
Tue 9/297:00 am -
1 stop6h 06m
Deal found 9/10![United Airlines logo]()
$604
This American Airlines deal was found by Cheapflights users on 9/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/264:43 pm -
1 stop7h 54m
Wed 9/302:22 pm -
1 stop6h 53m
Deal found 9/11![American Airlines logo]()
$449
This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2610:43 am -
2 stops12h 15m
Wed 9/301:24 pm -
1 stop5h 27m
Deal found 9/11![United Airlines logo]()
$454
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/298:45 am -
2 stops10h 56m
Sat 10/311:10 am -
2 stops9h 48m
Deal found 9/14![United Airlines logo]()
$459
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected ” under the list of providers to see comparable flight deals.
Sat 10/103:41 pm -
1 stop9h 08m
Sat 10/175:00 am -
2 stops12h 01m
Deal found 9/10![United Airlines logo]()
$404
This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/104:42 pm -
1 stop9h 10m
Sat 10/176:00 am -
1 stop7h 53m
Deal found 9/10![American Airlines logo]()
$450
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.
Sun 10/252:37 pm -
1 stop18h 27m
Sat 10/3111:52 am -
1 stop24h 27m
Deal found 9/14![Multiple Airlines logo]()
$544
One-way flights from Peoria to OntarioSearch for one-way flight options from Peoria to Ontario. Find affordable one-way fares based on user searches. Data last updated September 14, 2026.
Search for one-way flight options from Peoria to Ontario. Find affordable one-way fares based on user searches. Data last updated September 14, 2026.
This Trip.com deal was found by Cheapflights users on 9/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/279:53 pm -
1 stop15h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$196
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/148:45 am -
1 stop14h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![United Airlines logo]()
$377
This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/94:42 pm -
1 stop6h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![American Airlines logo]()
$379
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1010:43 am -
2 stops12h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![United Airlines logo]()
$384
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/118:45 am -
1 stop6h 01m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![United Airlines logo]()
$450
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/223:35 pm -
1 stop9h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![United Airlines logo]()
$466
This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/114:42 pm -
2 stops8h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![American Airlines logo]()
$550
This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/213:35 pm -
1 stop9h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![United Airlines logo]()
$589
Find flight deals from Peoria to Ontario
Discover tips and strategies to find the most affordable flight options for your journey from Peoria (PIA) 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 September 14, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $379 (American Airlines) |
One-way from | $196 (Trip.com) |
Popular in | August |
Cheapest in | January |
Average price | $393 |
Cheapflights Fare Finder
Customize your flight search to find flights from Peoria 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 September 14, 2026.
Use the filters below to find and compare flights from Peoria to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PeoriaOntario
PIA Greater Peoria - ONT Ontario
PIAONT
Greater Peoria
Fri 10/9
4:42 pm-9:11 pm
1 stop6h 29m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$379
PeoriaOntario
PIA Greater Peoria - ONT Ontario
PIAONT
Greater Peoria
Sat 10/10
10:43 am-8:58 pm
2 stops12h 15m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$384
PeoriaOntario
PIA Greater Peoria - ONT Ontario
PIAONT
Greater Peoria
Wed 10/14
10:43 am-8:58 pm
2 stops12h 15m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$384
Quickest round-trip
PeoriaOntario
PIA Greater Peoria - ONT Ontario
PIAONT
Greater Peoria
Sun 10/11
8:45 am-12:46 pm
1 stop6h 01m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$450
PeoriaOntario
PIA Greater Peoria - ONT Ontario
PIAONT
Greater Peoria
Sat 10/10
4:42 pm-11:52 pm
1 stop9h 10m
Ontario
Sat 10/17
6:00 am-3:53 pm
1 stop7h 53m
$450
PeoriaOntario
PIA Greater Peoria - ONT Ontario
PIAONT
Greater Peoria
Tue 9/29
4:05 pm-10:49 pm
1 stop8h 44m
Ontario
Sat 10/3
11:10 am-10:58 pm
2 stops9h 48m
$454
PeoriaOntario
PIA Greater Peoria - ONT Ontario
PIAONT
Greater Peoria
Wed 11/4
8:41 am-12:33 pm
1 stop5h 52m
Ontario
Tue 11/10
1:29 pm-9:06 pm
1 stop5h 37m
$459
PeoriaOntario
PIA Greater Peoria - ONT Ontario
PIAONT
Greater Peoria
Sat 1/23
8:14 am-5:47 pm
2 stops11h 33m
Ontario
Tue 1/26
11:20 am-11:06 pm
2 stops9h 46m
$469
PeoriaOntario
PIA Greater Peoria - ONT Ontario
PIAONT
Greater Peoria
Tue 9/22
6:05 am-12:50 pm
2 stops8h 45m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$471
PeoriaOntario
PIA Greater Peoria - ONT Ontario
PIAONT
Greater Peoria
Tue 11/3
8:41 am-8:15 pm
2 stops13h 34m
Ontario
Tue 11/10
1:29 pm-9:06 pm
1 stop5h 37m
$484
Showing 1-10 of 12 resultsSorted by cheapest first
Compare providers for flights from Peoria 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 Peoria to Ontario in September.
| 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 Peoria, Illinois-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Peoria, Illinois-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Peoria, Illinois-Ontario flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Peoria, Illinois-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 Peoria, Illinois-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 Peoria to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Peoria with our price prediction graph.
PIA-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.
Reviews of airlines servicing Ontario
Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated September 14, 2026.
See what other customers who have flown with United Airlines and American Airlines from Peoria to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.1
Comfort
7.3
Overall
7.4
Boarding
7.7
Food
6.7
Entertainment
7.1
Reviews
1 / 20
4.0
OkaySimon,Jun 2024
LAS - LAX
Crew
8.1
Comfort
7.3
Overall
7.4
Boarding
7.7
Food
6.7
Entertainment
7.1
Reviews
1 / 20
4.0
OkaySimon,Jun 2024
LAS - LAX
Crew
8.1
Comfort
7.3
Overall
7.4
Boarding
7.7
Food
6.7
Entertainment
7.1
Reviews
1 / 20
4.0
OkaySimon,Jun 2024
LAS - LAX
Related info for your journey
Find useful and relevant information for your journey from Peoria to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
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Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 14, 2026.
Peoria and Ontario flights
Browse other Peoria and Ontario flight options. Last updated on September 14, 2026.
Other flights from Peoria
Browse through other flights departing from Peoria. Flights are based on user searches made on Cheapflights and were last updated on September 14, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 2 airlines flying from Peoria to Ontario
Discover the top 2 airlines that operate flights from Peoria to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 14, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$378 | Average$543 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$448 | Average$581 | FlexibilityNo cancel fee | On-time69% |