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Flights from Ontario to Chicago
Cheap flight deals from Ontario to Chicago Starting at AED 140
We've found these cheap flights for you. You can book one-way or round-trip flight tickets.
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Round-trip
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One way
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Cheapest nonstopONT 07:006hNonstopORD 15:00Ontario - Chicago | Tue, May 6 | Southwest AirlinesORD 08:374h 31mNonstopSIN 11:08Chicago - Ontario | Tue, May 13 | Spirit AirlinesAED 878 AED 1,12222% OFF22% OFFAED 1,122 AED 878
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ONT 07:053h 50mNonstopMDW 12:55Ontario - Chicago | Tue, Apr 1 | Southwest AirlinesORD 17:304h 31mNonstopSIN 20:01Chicago - Ontario | Tue, Apr 8 | American AirlinesAED 909 AED 1,12219% OFF19% OFFAED 1,122 AED 909
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ONT 00:5921h 43m1 stopsORD 00:42Ontario - Chicago | Wed, Apr 2 | Frontier AirlinesMDW 06:459h 42m1 stopsSIN 14:27Chicago - Ontario | Wed, Apr 9 | Frontier AirlinesAED 302 AED 1,12273% OFF73% OFFAED 1,122 AED 302
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ONT 00:5921h 24m1 stopsORD 00:23Ontario - Chicago | Tue, Mar 25 | Frontier AirlinesMDW 06:4019h 45m1 stopsSIN 00:25Chicago - Ontario | Tue, Apr 1 | Frontier AirlinesAED 32871% OFFAED 1,122 AED 328
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ONT 00:5921h 45m1 stopsORD 00:44Ontario - Chicago | Wed, Mar 26 | Frontier AirlinesORD 06:4019h 45m1 stopsSIN 00:25Chicago - Ontario | Wed, Apr 2 | Frontier AirlinesAED 34469% OFFAED 1,122 AED 344
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ONT 00:5921h 16m1 stopsORD 00:15Ontario - Chicago | Tue, Apr 15 | Frontier AirlinesMDW 06:456h 35m1 stopsSIN 11:20Chicago - Ontario | Tue, Apr 22 | Frontier AirlinesAED 34669% OFFAED 1,122 AED 346
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ONT 00:5921h 22m1 stopsMDW 00:21Ontario - Chicago | Wed, Apr 16 | Frontier AirlinesORD 08:308h 48m1 stopsSIN 15:18Chicago - Ontario | Thu, Apr 24 | Frontier AirlinesAED 34869% OFFAED 1,122 AED 348
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ONT 14:4312h 40m1 stopsMDW 05:23Ontario - Chicago | Wed, Apr 9 | Frontier AirlinesMDW 06:009h 40m1 stopsSIN 13:40Chicago - Ontario | Wed, Apr 16 | Frontier AirlinesAED 35369% OFFAED 1,122 AED 353
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ONT 15:177h 4m1 stopsMDW 00:21Ontario - Chicago | Tue, Apr 8 | Frontier AirlinesMDW 06:4527h 49m1 stopsSIN 08:34Chicago - Ontario | Sat, Apr 12 | Frontier AirlinesAED 37467% OFFAED 1,122 AED 374
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ONT 16:256h 17m1 stopsORD 00:42Ontario - Chicago | Mon, Apr 7 | Frontier AirlinesORD 08:009h 1m1 stopsSIN 15:01Chicago - Ontario | Wed, Apr 9 | Frontier AirlinesAED 38166% OFFAED 1,122 AED 381
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ONT 15:0211h 52m1 stopsORD 04:54Ontario - Chicago | Thu, Apr 3 | Frontier AirlinesORD 06:309h 42m1 stopsSIN 14:12Chicago - Ontario | Thu, Apr 10 | Frontier AirlinesAED 38266% OFFAED 1,122 AED 382
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ONT 10:5316h 1m1 stopsORD 04:54Ontario - Chicago | Thu, Apr 10 | Frontier AirlinesMDW 06:009h 42m1 stopsSIN 13:42Chicago - Ontario | Mon, Apr 14 | Frontier AirlinesAED 38266% OFFAED 1,122 AED 382
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ONT 13:0017h 25m1 stopsCHI Invalid DateOntario - Chicago | Tue, Mar 25 | Normal AirlineCHI 15:006hNonstopONT 16:00Chicago - Ontario | Thu, Mar 27 | Normal AirlineFind More FlightsFind More Flights
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Cheapest nonstopONT 07:006hNonstopORD 15:00Ontario - Chicago | Tue, Apr 15 | Southwest AirlinesAED 554 AED 72724% OFF24% OFFAED 727 AED 554
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ONT 07:006hNonstopORD 15:00Ontario - Chicago | Tue, May 13 | Southwest AirlinesAED 589 AED 72719% OFF19% OFFAED 727 AED 589
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ONT 00:5921h 22m1 stopsMDW 00:21Ontario - Chicago | Wed, Apr 16 | Frontier AirlinesAED 140 AED 72781% OFF81% OFFAED 727 AED 140
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ONT 15:177h 4m1 stopsMDW 00:21Ontario - Chicago | Wed, Apr 9 | Frontier AirlinesAED 14081% OFFAED 727 AED 140
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ONT 00:5921h 24m1 stopsORD 00:23Ontario - Chicago | Tue, Mar 25 | Frontier AirlinesAED 14780% OFFAED 727 AED 147
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ONT 00:5921h 45m1 stopsORD 00:44Ontario - Chicago | Wed, Mar 26 | Frontier AirlinesAED 14880% OFFAED 727 AED 148
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ONT 00:5921h 16m1 stopsORD 00:15Ontario - Chicago | Tue, Apr 15 | Frontier AirlinesAED 14880% OFFAED 727 AED 148
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ONT 18:5916h 49m1 stopsMDW 13:48Ontario - Chicago | Tue, Apr 8 | Frontier AirlinesAED 15179% OFFAED 727 AED 151
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ONT 19:5824h 29m1 stopsMDW 22:27Ontario - Chicago | Wed, Apr 2 | Frontier AirlinesAED 16178% OFFAED 727 AED 161
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ONT 21:355h 56m1 stopsMDW 05:31Ontario - Chicago | Mon, Mar 24 | Frontier AirlinesAED 16877% OFFAED 727 AED 168
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ONT 00:5921h 22m1 stopsMDW 00:21Ontario - Chicago | Mon, Apr 7 | Frontier AirlinesAED 16877% OFFAED 727 AED 168
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ONT 16:156h 6m1 stopsMDW 00:21Ontario - Chicago | Thu, Apr 10 | Frontier AirlinesAED 18375% OFFAED 727 AED 183
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ONT 13:0017h 25m1 stopsCHI Invalid DateOntario - Chicago | Tue, Mar 25 | Normal AirlineFind More FlightsFind More Flights
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Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.
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Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.
Frequently Asked Questions
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When are flight tickets from Ontario (ONT) to Chicago (CHI) the cheapest?
Airlines adjust prices for flights from Ontario to Chicago based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays. -
How much do flights from Ontario (ONT) to Chicago (CHI) cost?
According to Trip.com's data, the lowest price is around AED 1,010. -
What is the transportation method from the main airport to downtown in Chicago?
- The distance from O'Hare International Airport to downtown is about 25 km, by taxi about 40 minutes.
- The distance from Midway International Airport to downtown is about 14 km, by taxi about 30 minutes.
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What's the most popular airline for non-stop flights from Ontario (ONT) to Chicago (CHI)?
United Airlines operates 2 non-stop flights from Ontario (ONT) to Chicago (CHI). -
How many airports are there in Chicago (CHI)?
There are 3 airport(s) near Chicago (CHI): Midway International Airport, O'Hare International Airport and Chicago Rockford International Airport.
How to find a cheap flight from Ontario to Chicago
Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Ontario to Chicago. Book your flights at the right time and save more.
Being flexible with your dates to get the cheapest Ontario to Chicago ticket.
Tap "Date" on flight search bar to scan through the calender for Ontario to Chicago airfare over next 6 months in 2025. If you would like to fly in next 3 months, it seems the cheapest date is on Tue, Apr 15 at AED 554 for one-way flights.
Compare cheap Ontario to Chicago flight deals from over hundreds of airlines.
Our extensive search allows you to compare prices from over 500 airlines to choose the cheapest flight tickets from Ontario to Chicago. The cheapest airline operating is Southwest Airlines.
Set up a Price Alert
By setting up a Price Alert for your Ontario to Chicago route, you can easily track the price of your airline tickets from without manually checking every day.
Don't miss cheap Ontario to Chicago flight deals and promo codes.
You can always get the latest deals through Trip.com Deals and Promo Codes for cheap flights. If registering a free membership, you can receive more deals for your flights.
Book early or wait unitl the last minute.
It's always better to book early. Flight tickets tend to be the cheapest when they are first released, normally about a year before the departure date. So, check online as soon as the flights you want become available. If you miss the cheapest time, you can still find lower-priced tickets as the flight date approaches.
Search for flights on the go.
To get the best flight booking experience on the go, download Trip.com and search for cheap flight tickets from Ontario to Chicago to get exclusive deals for you.
Flight Info | Ontario to Chicago
Cheapest one-way flight price | AED 139 |
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Cheapest return ticket price | AED 493 |
Off-season for travel | February |
Peak season for travel | October |
Flight distance | 9,812.12 km |
Popular airline | United Airlines |
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