$95+ Cheap flights from Chicago (CHI) to Ontario
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/20. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — YYZ
Jun 26 — Jul 31
Round-trip
1 adult, Economy
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Find cheap flights from Chicago to Ontario with Cheapflights
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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
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Cheapest flights from Chicago to OntarioExplore the most affordable flight options available from Chicago to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 27, 2026.
Explore the most affordable flight options available from Chicago to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 27, 2026.
This Gotogate deal was found by Cheapflights users on 5/25. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/113:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Mon 6/158:45 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/25![Porter Airlines logo]()
$212
This Gotogate deal was found by Cheapflights users on 5/25. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/112:00 pm
ORD
- YTZ
Nonstop1h 41m
Air Canada
Mon 6/157:20 pm
YTZ
- ORD
Nonstop1h 56m
Air Canada
Deal found 5/25![Air Canada logo]()
$216
This Kiwi.com deal was found by Cheapflights users on 5/25. 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.
Sat 9/193:20 pm
ORD
- YTZ
Nonstop1h 40m
Porter Airlines
Sat 9/2610:05 am
YTZ
- ORD
Nonstop1h 55m
Porter Airlines
Deal found 5/25![Porter Airlines logo]()
$219
This Jettzy deal was found by Cheapflights users on 5/24. 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 Jettzy is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2011:45 am
ORD
- YTZ
Nonstop1h 40m
Porter Airlines
Tue 9/228:40 pm
YTZ
- ORD
Nonstop1h 55m
Porter Airlines
Deal found 5/24![Porter Airlines logo]()
$220
This Kiwi.com deal was found by Cheapflights users on 5/26. 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.
Fri 9/411:45 am
ORD
- YTZ
Nonstop1h 40m
Porter Airlines
Mon 9/78:40 pm
YTZ
- ORD
Nonstop1h 55m
Porter Airlines
Deal found 5/26![Porter Airlines logo]()
$221
This Kiwi.com deal was found by Cheapflights users on 5/24. 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.
Thu 6/113:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sun 6/148:45 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/24![Porter Airlines logo]()
$222
This Kiwi.com deal was found by Cheapflights users on 5/25. 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.
Wed 9/23:20 pm
ORD
- YTZ
Nonstop1h 40m
Porter Airlines
Sun 9/68:40 pm
YTZ
- ORD
Nonstop1h 55m
Porter Airlines
Deal found 5/25![Porter Airlines logo]()
$222
This Kiwi.com deal was found by Cheapflights users on 5/24. 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 9/1311:45 am
ORD
- YTZ
Nonstop1h 40m
Porter Airlines
Sun 9/2710:05 am
YTZ
- ORD
Nonstop1h 55m
Porter Airlines
Deal found 5/24![Porter Airlines logo]()
$223
This Kiwi.com deal was found by Cheapflights users on 5/24. 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.
Fri 6/1210:15 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sun 6/148:45 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/24![Porter Airlines logo]()
$224
This Kiwi.com deal was found by Cheapflights users on 5/23. 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.
Sat 6/610:15 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sun 6/78:45 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/23![Porter Airlines logo]()
$225
This Kiwi.com deal was found by Cheapflights users on 5/23. 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.
Fri 9/253:20 pm
ORD
- YTZ
Nonstop1h 40m
Porter Airlines
Mon 9/2810:05 am
YTZ
- ORD
Nonstop1h 55m
Porter Airlines
Deal found 5/23![Porter Airlines logo]()
$226
This Kiwi.com deal was found by Cheapflights users on 5/26. 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.
Fri 9/257:00 am
ORD
- YTZ
Nonstop1h 40m
Porter Airlines
Sun 9/271:40 pm
YTZ
- ORD
Nonstop1h 55m
Porter Airlines
Deal found 5/26![Porter Airlines logo]()
$227
Best flights from Chicago to OntarioDiscover carefully curated flight deals from Chicago to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 27, 2026.
Discover carefully curated flight deals from Chicago to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 27, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/24. 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.
Sat 6/1310:15 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sun 6/148:45 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/24![Porter Airlines logo]()
$224
This United Airlines deal was found by Cheapflights users on 5/22. 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 6/139:20 pm
ORD
- YYZ
Nonstop1h 39m
United Airlines
Tue 6/163:00 pm
YYZ
- ORD
1 stop8h 07m
United Airlines
Deal found 5/22![United Airlines logo]()
$259
This Delta deal was found by Cheapflights users on 5/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/188:52 am
ORD
- YYZ
1 stop3h 42m
Delta
Mon 6/222:29 pm
YYZ
- ORD
1 stop7h 02m
Delta
Deal found 5/22![Delta logo]()
$269
This KAYAK deal was found by Cheapflights users on 5/22. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/242:00 pm
ORD
- YTZ
Nonstop1h 41m
Air Canada
Fri 8/287:20 pm
YTZ
- ORD
Nonstop1h 56m
Air Canada
Deal found 5/22![Air Canada logo]()
$348
This Trip.com deal was found by Cheapflights users on 5/25. 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.
Mon 6/1510:15 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Thu 6/188:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/25![Porter Airlines logo]()
$230
This Kiwi.com deal was found by Cheapflights users on 5/22. 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.
Fri 6/193:20 pm
MDW
- YOW
1 stop8h 00m
Multiple Airlines
Fri 6/2611:00 am
YOW
- MDW
1 stop4h 35m
Multiple Airlines
Deal found 5/22![Multiple Airlines logo]()
$478
This Kiwi.com deal was found by Cheapflights users on 5/24. 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.
Wed 6/2410:25 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Wed 7/18:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/24![Porter Airlines logo]()
$235
This United Airlines deal was found by Cheapflights users on 5/24. 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 6/135:55 pm
ORD
- YYZ
Nonstop1h 49m
United Airlines
Sun 6/1411:00 am
YYZ
- ORD
Nonstop2h 00m
United Airlines
Deal found 5/24![United Airlines logo]()
$278
This Delta deal was found by Cheapflights users on 5/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/1311:15 am
ORD
- YYZ
1 stop5h 09m
Delta
Wed 6/176:05 am
YYZ
- ORD
1 stop5h 45m
Delta
Deal found 5/25![Delta logo]()
$303
This Kiwi.com deal was found by Cheapflights users on 5/25. 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.
Thu 7/210:25 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sun 7/58:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/25![Porter Airlines logo]()
$257
This Delta deal was found by Cheapflights users on 5/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/111:26 pm
MDW
- YYZ
1 stop8h 36m
Delta
Sun 6/146:05 am
YYZ
- MDW
1 stop4h 09m
Delta
Deal found 5/22![Delta logo]()
$313
This United Airlines deal was found by Cheapflights users on 5/22. 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 6/129:20 pm
ORD
- YYZ
Nonstop1h 39m
United Airlines
Mon 6/157:00 am
YYZ
- ORD
Nonstop2h 00m
United Airlines
Deal found 5/22![United Airlines logo]()
$316
This KAYAK deal was found by Cheapflights users on 5/22. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/76:22 pm
ORD
- YTZ
1 stop12h 25m
Air Canada
Wed 6/1012:15 pm
YTZ
- ORD
Nonstop1h 55m
Air Canada
Deal found 5/22![Air Canada logo]()
$351
This Porter Airlines deal was found by Cheapflights users on 5/25. 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 Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/1310:15 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Tue 6/168:45 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/25![Porter Airlines logo]()
$269
This United Airlines deal was found by Cheapflights users on 5/23. 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 7/1012:55 pm
ORD
- YYZ
Nonstop1h 51m
United Airlines
Sun 7/1211:00 am
YYZ
- ORD
Nonstop2h 00m
United Airlines
Deal found 5/23![United Airlines logo]()
$319
This Delta deal was found by Cheapflights users on 5/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/247:01 am
ORD
- YYZ
1 stop7h 18m
Delta
Wed 7/16:05 am
YYZ
- ORD
1 stop7h 55m
Delta
Deal found 5/24![Delta logo]()
$324
This oojo deal was found by Cheapflights users on 5/26. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/239:17 am
MDW
- YOW
2 stops14h 03m
WestJet
Sat 6/276:55 am
YOW
- MDW
2 stops36h 36m
WestJet
Deal found 5/26![WestJet logo]()
$816
This Trip.com deal was found by Cheapflights users on 5/26. 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.
Mon 6/1510:15 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Tue 6/238:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/26![Porter Airlines logo]()
$280
This United Airlines deal was found by Cheapflights users on 5/22. 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.
Thu 7/912:55 pm
ORD
- YYZ
Nonstop1h 51m
United Airlines
Fri 7/175:15 pm
YYZ
- ORD
Nonstop2h 03m
United Airlines
Deal found 5/22![United Airlines logo]()
$319
This Delta deal was found by Cheapflights users on 5/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/191:26 pm
MDW
- YYZ
1 stop8h 36m
Delta
Sun 6/286:05 am
YYZ
- MDW
1 stop7h 41m
Delta
Deal found 5/24![Delta logo]()
$324
This Kiwi.com deal was found by Cheapflights users on 5/23. 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.
Thu 7/210:20 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sat 7/48:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/23![Porter Airlines logo]()
$297
This United Airlines deal was found by Cheapflights users on 5/25. 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 7/1411:07 am
ORD
- YYZ
1 stop6h 55m
United Airlines
Sun 7/197:00 am
YYZ
- ORD
Nonstop2h 00m
United Airlines
Deal found 5/25![United Airlines logo]()
$329
This Delta deal was found by Cheapflights users on 5/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/115:18 pm
ORD
- YYZ
1 stop4h 44m
Delta
Tue 7/146:10 am
YYZ
- ORD
1 stop7h 53m
Delta
Deal found 5/22![Delta logo]()
$344
This United Airlines deal was found by Cheapflights users on 5/22. 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 7/16:30 am
ORD
- YYZ
1 stop6h 49m
United Airlines
Sun 7/57:00 am
YYZ
- ORD
Nonstop2h 00m
United Airlines
Deal found 5/22![United Airlines logo]()
$329
This Kiwi.com deal was found by Cheapflights users on 5/27. 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.
Fri 6/263:20 pm
MDW
- YOW
1 stop3h 44m
Multiple Airlines
Sun 6/286:25 pm
YOW
- MDW
1 stop16h 15m
Multiple Airlines
Deal found 5/27![Multiple Airlines logo]()
$549
This Delta deal was found by Cheapflights users on 5/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/189:19 am
MDW
- YYZ
1 stop7h 05m
Delta
Sat 7/256:10 am
YYZ
- MDW
1 stop7h 28m
Delta
Deal found 5/22![Delta logo]()
$344
This Trip.com deal was found by Cheapflights users on 5/23. 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.
Fri 7/1010:20 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Mon 7/208:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/23![Porter Airlines logo]()
$319
This United Airlines deal was found by Cheapflights users on 5/25. 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 7/199:20 pm
ORD
- YYZ
Nonstop1h 39m
United Airlines
Wed 7/2212:45 pm
YYZ
- ORD
1 stop5h 17m
United Airlines
Deal found 5/25![United Airlines logo]()
$334
This Delta deal was found by Cheapflights users on 5/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/29:17 am
MDW
- YYZ
1 stop5h 02m
Delta
Sun 7/59:45 am
YYZ
- MDW
1 stop4h 01m
Delta
Deal found 5/25![Delta logo]()
$344
This Kiwi.com deal was found by Cheapflights users on 5/24. 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.
Fri 6/510:15 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sun 6/71:45 pm
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/24![Porter Airlines logo]()
$325
Last-minute flights from Chicago to OntarioDiscover last-minute flight deals from Chicago to Ontario. Data last updated May 27, 2026 and is based on user searches.
Discover last-minute flight deals from Chicago to Ontario. Data last updated May 27, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 5/23. 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.
Sat 6/610:15 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sun 6/78:45 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/23![Porter Airlines logo]()
$225
This Flightnetwork deal was found by Cheapflights users on 5/23. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/68:20 pm
ORD
- YYZ
Nonstop1h 43m
Air Canada
Sun 6/78:00 am
YYZ
- ORD
Nonstop2h 00m
Air Canada
Deal found 5/23![Air Canada logo]()
$231
This Mytrip deal was found by Cheapflights users on 5/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/97:25 am
ORD
- YTZ
Nonstop1h 41m
Air Canada
Sat 6/137:20 pm
YTZ
- ORD
Nonstop1h 56m
Air Canada
Deal found 5/24![Air Canada logo]()
$228
This Trip.com deal was found by Cheapflights users on 5/24. 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.
Tue 6/910:15 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sat 6/138:45 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/24![Porter Airlines logo]()
$230
This Gotogate deal was found by Cheapflights users on 5/25. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/113:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Mon 6/158:45 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/25![Porter Airlines logo]()
$212
This Gotogate deal was found by Cheapflights users on 5/25. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/112:00 pm
ORD
- YTZ
Nonstop1h 41m
Air Canada
Mon 6/157:20 pm
YTZ
- ORD
Nonstop1h 56m
Air Canada
Deal found 5/25![Air Canada logo]()
$216
This Kiwi.com deal was found by Cheapflights users on 5/24. 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.
Thu 6/113:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sun 6/148:45 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/24![Porter Airlines logo]()
$222
This Mytrip deal was found by Cheapflights users on 5/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/118:20 pm
ORD
- YYZ
Nonstop1h 43m
Air Canada
Sun 6/148:00 am
YYZ
- ORD
Nonstop2h 00m
Air Canada
Deal found 5/27![Air Canada logo]()
$237
This Kiwi.com deal was found by Cheapflights users on 5/24. 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.
Fri 6/1210:15 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sun 6/148:45 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/24![Porter Airlines logo]()
$224
This Mytrip deal was found by Cheapflights users on 5/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/135:35 pm
ORD
- YYZ
Nonstop1h 42m
Air Canada
Sun 6/141:55 pm
YYZ
- ORD
Nonstop2h 00m
Air Canada
Deal found 5/26![Air Canada logo]()
$239
This Kiwi.com deal was found by Cheapflights users on 5/24. 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.
Sat 6/2010:25 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Mon 6/298:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/24![Porter Airlines logo]()
$235
This Trip.com deal was found by Cheapflights users on 5/25. 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.
Tue 6/2310:25 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Wed 6/248:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/25![Porter Airlines logo]()
$229
One-way flights from Chicago to OntarioSearch for one-way flight options from Chicago to Ontario. Find affordable one-way fares based on user searches. Data last updated May 27, 2026.
Search for one-way flight options from Chicago to Ontario. Find affordable one-way fares based on user searches. Data last updated May 27, 2026.
This United Airlines deal was found by Cheapflights users on 5/22. 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 6/205:55 pm
ORD
- YYZ
Nonstop1h 49m
United Airlines
Deal found 5/22![United Airlines logo]()
$95
This Super.com deal was found by Cheapflights users on 5/23. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/13:20 pm
ORD
- YTZ
Nonstop1h 40m
Porter Airlines
Deal found 5/23![Porter Airlines logo]()
$96
This Super.com deal was found by Cheapflights users on 5/24. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/253:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Deal found 5/24![Porter Airlines logo]()
$98
This Super.com deal was found by Cheapflights users on 5/26. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/211:45 am
ORD
- YTZ
Nonstop1h 40m
Porter Airlines
Deal found 5/26![Porter Airlines logo]()
$98
This Super.com deal was found by Cheapflights users on 5/25. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/910:15 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Deal found 5/25![Porter Airlines logo]()
$99
This Kissandfly.com deal was found by Cheapflights users on 5/23. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/83:20 pm
ORD
- YTZ
Nonstop1h 40m
Porter Airlines
Deal found 5/23![Porter Airlines logo]()
$100
This FlightHub deal was found by Cheapflights users on 5/23. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/2010:25 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Deal found 5/23![Porter Airlines logo]()
$103
This Trip.com deal was found by Cheapflights users on 5/22. 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.
Sat 6/1310:15 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Deal found 5/22![Porter Airlines logo]()
$104
This FlightHub deal was found by Cheapflights users on 5/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/127:00 am
ORD
- YTZ
Nonstop1h 40m
Porter Airlines
Deal found 5/26![Porter Airlines logo]()
$104
This American Airlines deal was found by Cheapflights users on 5/23. 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 6/203:21 pm
ORD
- YYZ
1 stop7h 24m
American Airlines
Deal found 5/23![American Airlines logo]()
$105
This Delta deal was found by Cheapflights users on 5/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/141:26 pm
MDW
- YYZ
1 stop8h 36m
Delta
Deal found 5/22![Delta logo]()
$105
This Air Canada deal was found by Cheapflights users on 5/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/107:25 am
ORD
- YTZ
Nonstop1h 41m
Air Canada
Deal found 5/27![Air Canada logo]()
$106
Find flight deals from Chicago to Ontario
Keep the following information in mind while searching for Chicago to Ontario flight deals. Data was last updated May 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $212 (Gotogate) |
One-way from | $95 (United Airlines) |
Popular in | April |
Cheapest in | September |
Average price | $279 |
Good round-trip deal | $235 or less |
Good one-way deal | $112 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Chicago 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 2,558,603 searches. Data last updated May 27, 2026.
Use the filters below to find and compare flights from Chicago to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
Sat 6/13
10:15 am-12:55 pm
Nonstop1h 40m
Toronto Island
Sun 6/14
8:45 am-9:35 am
Nonstop1h 50m
$224
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
Mon 6/15
10:15 am-12:55 pm
Nonstop1h 40m
Toronto Island
Thu 6/18
8:50 am-9:40 am
Nonstop1h 50m
$230
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
Wed 6/24
10:25 am-1:05 pm
Nonstop1h 40m
Toronto Island
Wed 7/1
8:50 am-9:40 am
Nonstop1h 50m
$235
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
Thu 7/2
10:25 am-1:05 pm
Nonstop1h 40m
Toronto Island
Sun 7/5
8:50 am-9:40 am
Nonstop1h 50m
$257
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
Sat 6/13
9:20 pm-11:59 pm
Nonstop1h 39m
Toronto Pearson Intl
Tue 6/16
3:00 pm-10:07 pm
1 stop8h 07m
$259
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
Thu 6/18
8:52 am-1:34 pm
1 stop3h 42m
Toronto Pearson Intl
Mon 6/22
2:29 pm-8:31 pm
1 stop7h 02m
$269
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
Sat 6/13
10:15 am-12:55 pm
Nonstop1h 40m
Toronto Island
Tue 6/16
8:45 am-9:35 am
Nonstop1h 50m
$269
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
Sat 6/13
5:55 pm-8:44 pm
Nonstop1h 49m
Toronto Pearson Intl
Sun 6/14
11:00 am-12:00 pm
Nonstop2h 00m
$278
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
Mon 6/15
10:15 am-12:55 pm
Nonstop1h 40m
Toronto Island
Tue 6/23
8:50 am-9:40 am
Nonstop1h 50m
$280
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
Thu 7/2
10:20 am-1:00 pm
Nonstop1h 40m
Toronto Island
Sat 7/4
8:50 am-9:40 am
Nonstop1h 50m
$297
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Chicago to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Chicago with our price prediction graph.
MDW-YTZ
ORD-YYZ
ORD-YTZ
MDW-YOW
MDW-YYZ
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 Chicago to Ontario
CHI-CAON
MDW-YTZ
ORD-YYZ
ORD-YTZ
MDW-YOW
What is the cheapest month to book a flight from Chicago to Region of Ontario?
Currently, March is the cheapest month in which you can book a flight from Chicago to Region of Ontario (average of $58). Flying from Chicago to Region of Ontario in October is currently the most expensive (average of $919). 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.
What is the cheapest time of day to fly from CHI to ON?
Find hourly flight availability from Chicago to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 27, 2026.
It’s optimal to fly from Chicago to Region of Ontario in the evening. By choosing this option you can save up to 29% on the cost of your flight, compared to a flight at noon.
Weekly flight availability from Chicago to Region of Ontario
Explore weekly flight availability from Chicago to Ontario. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated May 27, 2026.
The most flights from CHI to CAON are scheduled on a Thursday (69 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (46 on average).
How much does it cost to fly round-trip from Chicago to Region of Ontario?
How far ahead should I book a flight from Chicago to Region of Ontario?
Booking 64 days in advance of your planned departure date is, on average, the best time to get cheap flights from Chicago to Region of Ontario. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest day to fly from Chicago to Region of Ontario?
Use this chart to determine the cheapest time to fly round-trip from Chicago to Ontario. Price data was last updated on May 23, 2026.
Travelers seeking maximum savings on their Chicago to Region of Ontario flight should consider departing on Saturday mornings when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
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 May 27, 2026.
See what other customers who have flown with Porter Airlines,Air Transat, andUnited Airlines from Chicago to Ontario have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.2
Crew
8.6
Food
7.6
Entertainment
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Boarding
8.2
Crew
8.6
Food
7.6
Entertainment
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Boarding
8.2
Crew
8.6
Food
7.6
Entertainment
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Boarding
8.2
Crew
8.6
Food
7.6
Entertainment
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Boarding
8.2
Crew
8.6
Food
7.6
Entertainment
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Boarding
8.2
Crew
8.6
Food
7.6
Entertainment
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Related info for your journey
Find useful and relevant information for your journey from Chicago to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Alternative routes for Chicago to Ontario
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Chicago to Ontario by cabin class
Find flights from Chicago to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Chicago and Ontario flights
Browse other Chicago and Ontario flight options. Last updated on May 27, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 7 airlines flying from Chicago to Ontario
Discover the top 7 airlines that operate flights from Chicago 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 2,558,603 searches. Data last updated May 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$88 | Average$303 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$102 | Average$355 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$160 | Average$403 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$168 | Average$437 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$170 | Average$319 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$174 | Average$370 | FlexibilityNo cancel fee | On-time52% | |
| Cheapest$209 | Average$367 | FlexibilityNo cancel fee | On-time71% |