Cheap Flights from Chicago to Ontario
We've found these cheap flights for you. You can book one-way or return flight tickets.
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Flight deals from Chicago to Ontario
We've found these cheap flights for you. You can book one-way or return flight tickets.
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Round-trip
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One way
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Cheapest nonstop
ORD 19:554h 31mDirectONT 22:26Chicago - Ontario | Wed, Jun 11 | United Airlines
SIN 06:304h 8mDirectORD 12:38Ontario - Chicago | Tue, Jun 17 | Spirit AirlinesNZD 287 NZD 32612% OFF12% OFFNZD 326 NZD 287 -
ORD 07:0028h 9m1 stopsONT 09:09Chicago - Ontario | Tue, Jul 8 | Frontier Airlines
SIN 10:474h 10mDirectORD 16:57Ontario - Chicago | Tue, Jul 15 | Spirit AirlinesNZD 211 NZD 32635% OFF35% OFFNZD 326 NZD 211 -
MDW 12:3513h 15m1 stopsONT 23:50Chicago - Ontario | Fri, Jun 27 | Frontier Airlines
SIN 00:444h 7mDirectORD 06:51Ontario - Chicago | Fri, Jul 4 | Spirit AirlinesNZD 222 NZD 32632% OFF32% OFFNZD 326 NZD 222
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MDW 14:4420h 17m1 stopsONT 09:01Chicago - Ontario | Thu, Jun 26 | Frontier Airlines
SIN 13:068h 12m1 stopsMDW 23:18Ontario - Chicago | Fri, Jul 4 | Frontier AirlinesNZD 23030% OFFNZD 326 NZD 230
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MDW 07:4013h 34m1 stopsONT 19:14Chicago - Ontario | Sun, Jul 20 | Frontier Airlines
SIN 10:474h 10mDirectORD 16:57Ontario - Chicago | Tue, Jul 22 | Spirit AirlinesNZD 23128% OFFNZD 326 NZD 231
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MDW 06:257h 27m1 stopsONT 11:52Chicago - Ontario | Fri, Jul 4 | Frontier Airlines
SIN 15:004h 11mDirectORD 21:11Ontario - Chicago | Tue, Jul 8 | Spirit AirlinesNZD 24326% OFFNZD 326 NZD 243
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MDW 14:4411h 6m1 stopsONT 23:50Chicago - Ontario | Thu, Jul 24 | Frontier Airlines
SIN 23:204h 5mDirectORD 05:25Ontario - Chicago | Thu, Jul 31 | Spirit AirlinesNZD 25023% OFFNZD 326 NZD 250
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ORD 05:4020h 10m1 stopsONT 23:50Chicago - Ontario | Thu, Jun 19 | Frontier Airlines
SIN 21:2810h 54m1 stopsORD 10:22Ontario - Chicago | Wed, Jun 25 | Frontier AirlinesNZD 27117% OFFNZD 326 NZD 271
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ORD 07:0018h 50m1 stopsONT 23:50Chicago - Ontario | Wed, Aug 6 | Frontier Airlines
SIN 00:5921h 11m1 stopsORD 00:10Ontario - Chicago | Wed, Aug 13 | Frontier AirlinesNZD 27715% OFFNZD 326 NZD 277
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ORD 06:155h 40m1 stopsONT 09:55Chicago - Ontario | Sat, Aug 9 | Southwest Airlines
SIN 23:153h 55mDirectMDW 05:10Ontario - Chicago | Sat, Aug 16 | Southwest AirlinesNZD 28712% OFFNZD 326 NZD 287 -
CHI 13:0017h 25m1 stopsONT Invalid DateChicago - Ontario | Fri, Jun 13 | Normal Airline
ONT 15:006hDirectCHI 16:00Ontario - Chicago | Sun, Jun 15 | Normal AirlineFind More FlightsFind More Flights
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Cheapest nonstop
MDW 20:204h 10mDirectONT 22:30Chicago - Ontario | Fri, Aug 8 | Southwest AirlinesNZD 191 NZD 21813% OFF13% OFFNZD 218 NZD 191
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MDW 20:204h 10mDirectONT 22:30Chicago - Ontario | Thu, Aug 7 | Southwest AirlinesNZD 192 NZD 21812% OFF12% OFFNZD 218 NZD 192
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ORD 21:5620h 22m1 stopsONT 16:18Chicago - Ontario | Mon, Jun 16 | Frontier AirlinesNZD 93 NZD 21856% OFF56% OFFNZD 218 NZD 93
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ORD 05:4020h 10m1 stopsONT 23:50Chicago - Ontario | Thu, Jun 12 | Frontier AirlinesNZD 10950% OFFNZD 218 NZD 109
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MDW 12:3522h 26m1 stopsONT 09:01Chicago - Ontario | Mon, Jun 30 | Frontier AirlinesNZD 11846% OFFNZD 218 NZD 118
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ORD 21:5615h 57m1 stopsONT 11:53Chicago - Ontario | Sun, Jul 13 | Frontier AirlinesNZD 11946% OFFNZD 218 NZD 119
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MDW 12:3513h 15m1 stopsONT 23:50Chicago - Ontario | Fri, Aug 8 | Frontier AirlinesNZD 12841% OFFNZD 218 NZD 128
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ORD 07:0018h 50m1 stopsONT 23:50Chicago - Ontario | Sat, Jun 14 | Frontier AirlinesNZD 13239% OFFNZD 218 NZD 132
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MDW 06:257h 27m1 stopsONT 11:52Chicago - Ontario | Fri, Jul 4 | Frontier AirlinesNZD 13737% OFFNZD 218 NZD 137
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MDW 07:458h 20m1 stopsONT 14:05Chicago - Ontario | Sat, Jun 21 | Southwest AirlinesNZD 14434% OFFNZD 218 NZD 144
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MDW 05:155h 40m1 stopsONT 08:55Chicago - Ontario | Wed, Jul 30 | Southwest AirlinesNZD 14534% OFFNZD 218 NZD 145
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ORD 18:556h 15m1 stopsONT 23:10Chicago - Ontario | Wed, Jul 16 | Southwest AirlinesNZD 14633% OFFNZD 218 NZD 146
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CHI 13:0017h 25m1 stopsONT Invalid DateChicago - Ontario | Fri, Jun 13 | 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.
Flight Information from Chicago to Ontario
| Cheapest one-way flight price | NZD 92 |
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| Cheapest round-trip ticket price | NZD 210 |
| Off-season for travel | September |
| Peak season for travel | November |
| Flight distance | 2,753.98 km |
| Popular airline | Frontier Airlines |
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FAQ
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When are flight tickets from Chicago (CHI) to Ontario (ONT) the cheapest?
Airlines adjust prices for flights from Chicago to Ontario based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays. -
How much do flights from Chicago (CHI) to Ontario (ONT) cost?
According to Trip.com's data, the lowest price is around NZD 438.
How to find a cheap flight from Chicago to Ontario
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 Chicago to Ontario. Book your flights at the right time and save more.
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