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Peoria

$314+ Cheap flights from Ontario to Peoria, IL (ONT - PIA)

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 7/17. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — PIA
Jul 5 — Jul 121
Sat 7/5
Sat 7/12
1 adult, Economy
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Cheap flight deals from Ontario to Peoria

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Peoria (PIA). 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 30, 2025.

Round-trip from

$314
(American Airlines)

Popular in

March

Cheapest in

October

Average price

$494
From Ontario to Greater Peoria
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($144 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
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Find flight deals from Ontario to Peoria

Cheapest flights from Ontario to Peoria
Explore the most affordable flight options available from Ontario to Peoria. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 30, 2025.

This American Airlines deal was found by Cheapflights users on 6/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1711:59 pmONT - PIA
1 stop8h 40mAmerican Airlines
Sat 7/264:44 pmPIA - ONT
1 stop9h 10mAmerican Airlines
Deal found 6/28$314
This United Airlines deal was found by Cheapflights users on 6/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/116:00 amONT - PIA
2 stops13h 32mUnited Airlines
Sat 8/25:25 pmPIA - ONT
1 stop6h 41mUnited Airlines
Deal found 6/30$359

Cheapflights Fare Finder

Customize your flight search to find flights from Ontario to Peoria 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 30, 2025.
Use the filters below to find and compare flights from Ontario to Peoria that are best for you.

Fly from

Ontario

Fly to

Peoria

Route

Depart

Return

Price

OntarioPeoria

ONT - PIA

ONTPIA

Ontario

Thu 7/17

11:59 pm-10:39 am

1 stop8h 40m

Greater Peoria

Sat 7/26

4:44 pm-11:54 pm

1 stop9h 10m

$314

OntarioPeoria

ONT - PIA

ONTPIA

Ontario

Fri 7/11

6:00 am-9:32 pm

2 stops13h 32m

Greater Peoria

Sat 8/2

5:25 pm-10:06 pm

1 stop6h 41m

$359

OntarioPeoria

ONT - PIA

ONTPIA

Ontario

Wed 8/13

6:17 am-11:02 pm

2 stops14h 45m

$321

OntarioPeoria

ONT - PIA

ONTPIA

Ontario

Wed 8/13

5:05 am-8:56 pm

1 stop13h 51m

$337

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Best time to book a flight from Ontario to Peoria

Have a flexible travel schedule? Discover the best time to fly to Peoria 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 Peoria

What is the cheapest month to book a flight from Ontario to Peoria, Illinois?

Currently, August is the cheapest month in which you can book a flight from Ontario to Peoria, Illinois (average of $318). Flying from Ontario to Peoria, Illinois in July is currently the most expensive (average of $433). 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.

Reviews of airlines servicing Peoria

Get insights into the airlines that provide service to Peoria. 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 Peoria. Reviews last updated June 30, 2025.
Get a feel of what it's like to fly with United Airlines and American Airlines from Ontario to Peoria by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,852 reviews

Food

6.6

Overall

7.4

Comfort

7.3

Entertainment

7.0

Crew

8.1

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,852 reviews
United Airlines
7.4
Good
8,852 reviews

Food

6.6

Overall

7.4

Comfort

7.3

Entertainment

7.0

Crew

8.1

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,852 reviews

Food

6.6

Overall

7.4

Comfort

7.3

Entertainment

7.0

Crew

8.1

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

Find useful and relevant information for your journey from Ontario to Peoria. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Ontario to Peoria, Illinois round-trip?

    Flying on American Airlines is currently your cheapest option to Peoria, Illinois, with prices starting at $314. Another option worth looking into is United Airlines, starting at $359 round trip.

  • Can I find deals for flights from Ontario to Peoria that include hotel bookings?

    Yes. In addition to deals on Ontario to Peoria flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Peoria?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Peoria.

  • Can I find deals for business class flights from Ontario to Peoria?

    Yes. Cheapflights offers flight deals from Ontario to Peoria 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 Peoria, Illinois?

    Currently, August is the cheapest month in which you can book a flight from Ontario to Peoria, Illinois (average of $318). Flying from Ontario to Peoria, Illinois in July is currently the most expensive (average of $433). 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.

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Top 2 airlines flying from Ontario to Peoria

Discover the top 2 airlines that operate flights from Ontario to Peoria. 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 2,558,603 searches. Data last updated June 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$319Average$558FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$353Average$670FlexibilityNo cancel feeOn-time71%

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