Cheap Flights from Chicago to Ontario
We've found these cheap flights for you. You can book one-way or return flight tickets.
Swipe up to view more
Flights from Chicago to Ontario Starting at NZD 65
We've found these cheap flights for you. You can book one-way or return flight tickets.
-
Round-trip
-
One way
-
-
Cheapest nonstop
ORD 19:554h 31mNonstopONT 22:26Chicago - Ontario | Fri, May 23 | United Airlines
SIN 16:464h 19mNonstopORD 23:05Ontario - Chicago | Sat, May 24 | Frontier AirlinesNZD 350 NZD 45423% OFF23% OFFNZD 454 NZD 350 -
ORD 19:554h 31mNonstopONT 22:26Chicago - Ontario | Thu, May 22 | United Airlines
SIN 16:464h 19mNonstopORD 23:05Ontario - Chicago | Wed, May 28 | Frontier AirlinesNZD 381 NZD 45416% OFF16% OFFNZD 454 NZD 381
-
MDW 06:409h 47m1 stopsONT 14:27Chicago - Ontario | Wed, Apr 2 | Frontier Airlines
SIN 14:357h 46m1 stopsMDW 00:21Ontario - Chicago | Wed, Apr 9 | Frontier AirlinesNZD 134 NZD 45471% OFF71% OFFNZD 454 NZD 134 -
MDW 06:4019h 19m1 stopsONT 23:59Chicago - Ontario | Tue, Apr 1 | Frontier Airlines
SIN 00:5921h 22m1 stopsMDW 00:21Ontario - Chicago | Tue, Apr 8 | Frontier AirlinesNZD 13570% OFFNZD 454 NZD 135
-
MDW 06:459h 42m1 stopsONT 14:27Chicago - Ontario | Wed, Apr 9 | Frontier Airlines
SIN 00:5921h 16m1 stopsORD 00:15Ontario - Chicago | Tue, Apr 15 | Frontier AirlinesNZD 13770% OFFNZD 454 NZD 137
-
ORD 06:4519h 14m1 stopsONT 23:59Chicago - Ontario | Tue, Apr 15 | Frontier Airlines
SIN 15:177h 4m1 stopsMDW 00:21Ontario - Chicago | Wed, Apr 16 | Frontier AirlinesNZD 15267% OFFNZD 454 NZD 152
-
MDW 06:009h 42m1 stopsONT 13:42Chicago - Ontario | Mon, Apr 14 | Frontier Airlines
SIN 14:357h 40m1 stopsORD 00:15Ontario - Chicago | Tue, Apr 15 | Frontier AirlinesNZD 16364% OFFNZD 454 NZD 163
-
MDW 06:009h 42m1 stopsONT 13:42Chicago - Ontario | Mon, Apr 7 | Frontier Airlines
SIN 21:415h 42m1 stopsMDW 05:23Ontario - Chicago | Mon, Apr 14 | Frontier AirlinesNZD 17162% OFFNZD 454 NZD 171
-
ORD 06:309h 42m1 stopsONT 14:12Chicago - Ontario | Thu, Apr 10 | Frontier Airlines
SIN 08:469h 36m1 stopsMDW 20:22Ontario - Chicago | Wed, Apr 16 | Frontier AirlinesNZD 18060% OFFNZD 454 NZD 180
-
ORD 09:309h 43m1 stopsONT 17:13Chicago - Ontario | Thu, Apr 3 | Frontier Airlines
SIN 15:176h 53m1 stopsORD 00:10Ontario - Chicago | Tue, Apr 8 | Frontier AirlinesNZD 19057% OFFNZD 454 NZD 190
-
MDW 06:456h 35m1 stopsONT 11:20Chicago - Ontario | Tue, Apr 22 | Frontier Airlines
SIN 23:059h1 stopsMDW 10:05Ontario - Chicago | Thu, Apr 24 | Frontier AirlinesNZD 19257% OFFNZD 454 NZD 192
-
ORD 07:208h 22m1 stopsONT 13:42Chicago - Ontario | Tue, Apr 8 | Frontier Airlines
SIN 15:177h 25m1 stopsORD 00:42Ontario - Chicago | Wed, Apr 16 | Frontier AirlinesNZD 19257% OFFNZD 454 NZD 192
-
CHI 13:0017h 25m1 stopsONT Invalid DateChicago - Ontario | Fri, Mar 28 | Normal Airline
ONT 15:006hNonstopCHI 16:00Ontario - Chicago | Sun, Mar 30 | Normal AirlineFind More FlightsFind More Flights
-
Cheapest nonstop
ORD 19:554h 31mNonstopONT 22:26Chicago - Ontario | Fri, May 23 | United AirlinesNZD 249 NZD 31621% OFF21% OFFNZD 316 NZD 249
-
ORD 19:554h 31mNonstopONT 22:26Chicago - Ontario | Sat, May 24 | United AirlinesNZD 266 NZD 31616% OFF16% OFFNZD 316 NZD 266
-
MDW 06:409h 47m1 stopsONT 14:27Chicago - Ontario | Wed, Apr 2 | Frontier AirlinesNZD 65 NZD 31679% OFF79% OFFNZD 316 NZD 65
-
MDW 06:459h 42m1 stopsONT 14:27Chicago - Ontario | Wed, Apr 9 | Frontier AirlinesNZD 6879% OFFNZD 316 NZD 68
-
MDW 06:409h 47m1 stopsONT 14:27Chicago - Ontario | Tue, Apr 1 | Frontier AirlinesNZD 6978% OFFNZD 316 NZD 69
-
ORD 06:4519h 24m1 stopsONT 00:09Chicago - Ontario | Wed, Mar 26 | Frontier AirlinesNZD 7576% OFFNZD 316 NZD 75
-
MDW 06:4519h 14m1 stopsONT 23:59Chicago - Ontario | Mon, Apr 7 | Frontier AirlinesNZD 7975% OFFNZD 316 NZD 79
-
MDW 06:4019h 29m1 stopsONT 00:09Chicago - Ontario | Mon, Mar 31 | Frontier AirlinesNZD 8972% OFFNZD 316 NZD 89
-
MDW 20:0317h 23m1 stopsONT 11:26Chicago - Ontario | Mon, May 5 | Frontier AirlinesNZD 9570% OFFNZD 316 NZD 95
-
ORD 06:309h 42m1 stopsONT 14:12Chicago - Ontario | Thu, Apr 10 | Frontier AirlinesNZD 9570% OFFNZD 316 NZD 95
-
ORD 09:5510h 1m1 stopsONT 17:56Chicago - Ontario | Tue, Apr 15 | Frontier AirlinesNZD 9670% OFFNZD 316 NZD 96
-
MDW 06:4019h 29m1 stopsONT 00:09Chicago - Ontario | Thu, Mar 27 | Frontier AirlinesNZD 9670% OFFNZD 316 NZD 96
-
CHI 13:0017h 25m1 stopsONT Invalid DateChicago - Ontario | Fri, Mar 28 | Normal AirlineFind More FlightsFind More Flights
-
Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.
Find the best time to fly from Chicago to Ontario
We monitor flight fares to help you find the best deals effortlessly
Cheapest flights
From price
Search
Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.
FAQ
-
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 455.
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.
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
Compare Flight Prices
Compare prices on travel agency and airline websites.
Look Out for Deals
Check airline and travel agency websites for latest flight deals
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
Use the Trip.com App
Save up to £10 per person when booking your flights on Trip.com
Flight Information from Chicago to Ontario
| Cheapest one-way flight price | NZD 64 |
|---|---|
| Cheapest round-trip ticket price | NZD 224 |
| Off-season for travel | September |
| Peak season for travel | November |
| Flight distance | 9,812.12 km |
| Popular airline | Frontier Airlines |