$93+ 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 6/16. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — YYZ
Jun 21 — Jun 281
Round-trip
1 adult, Economy
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Find cheap flights from Chicago to Ontario with Cheapflights
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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 22, 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 22, 2026.
This FlightHub deal was found by Cheapflights users on 5/20. 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.
Wed 6/1710:15 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sun 6/218:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/20![Porter Airlines logo]()
$214
This FlightHub deal was found by Cheapflights users on 5/21. 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 6/1310:15 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sat 6/208:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/21![Porter Airlines logo]()
$216
This Kiwi.com deal was found by Cheapflights users on 5/20. 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 6/310:15 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sat 6/138:45 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/20![Porter Airlines logo]()
$217
This Kiwi.com deal was found by Cheapflights users on 5/21. 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 9/911:45 am
ORD
- YTZ
Nonstop1h 40m
Porter Airlines
Tue 9/158:40 pm
YTZ
- ORD
Nonstop1h 55m
Porter Airlines
Deal found 5/21![Porter Airlines logo]()
$217
This Booking.com deal was found by Cheapflights users on 5/20. 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 Booking.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 5/20![Porter Airlines logo]()
$218
This Kiwi.com deal was found by Cheapflights users on 5/20. 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 6/148:45 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/20![Porter Airlines logo]()
$220
This Kiwi.com deal was found by Cheapflights users on 5/20. 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 9/113:20 pm
ORD
- YTZ
Nonstop1h 40m
Porter Airlines
Sun 9/131:40 pm
YTZ
- ORD
Nonstop1h 55m
Porter Airlines
Deal found 5/20![Porter Airlines logo]()
$220
This Kiwi.com deal was found by Cheapflights users on 5/20. 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 6/2510:25 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Fri 6/261:45 pm
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/20![Porter Airlines logo]()
$221
This Kiwi.com deal was found by Cheapflights users on 5/21. 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 9/107:00 am
ORD
- YTZ
Nonstop1h 40m
Porter Airlines
Mon 9/148:40 pm
YTZ
- ORD
Nonstop1h 55m
Porter Airlines
Deal found 5/21![Porter Airlines logo]()
$221
This FlightHub deal was found by Cheapflights users on 5/21. 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 6/1310:15 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Mon 6/158:45 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/21![Porter Airlines logo]()
$222
This Kiwi.com deal was found by Cheapflights users on 5/19. 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.
Tue 9/111:45 am
ORD
- YTZ
Nonstop1h 40m
Porter Airlines
Sun 9/61:40 pm
YTZ
- ORD
Nonstop1h 55m
Porter Airlines
Deal found 5/19![Porter Airlines logo]()
$222
This Cheapflightsfares deal was found by Cheapflights users on 5/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/83:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Thu 6/111:45 pm
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/21![Porter Airlines logo]()
$223
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 22, 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 22, 2026.
This Trip.com deal was found by Cheapflights users on 5/21. 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.
Thu 6/43:20 pm
MDW
- YTZ
Nonstop1h 40m
Multiple Airlines
Sat 6/68:45 am
YTZ
- MDW
Nonstop1h 50m
Multiple Airlines
Deal found 5/21![Multiple Airlines logo]()
$251
This Delta deal was found by Cheapflights users on 5/20. 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 6/118:52 am
ORD
- YYZ
1 stop7h 32m
Delta
Sun 6/1412:09 pm
YYZ
- ORD
1 stop7h 20m
Delta
Deal found 5/20![Delta logo]()
$269
This United Airlines deal was found by Cheapflights users on 5/18. 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 6/112:56 pm
ORD
- YYZ
Nonstop2h 00m
United Airlines
Tue 6/167:00 am
YYZ
- ORD
Nonstop2h 00m
United Airlines
Deal found 5/18![United Airlines logo]()
$278
This FlightHub deal was found by Cheapflights users on 5/21. 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.
Fri 7/2410:20 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Tue 7/288:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/21![Porter Airlines logo]()
$286
This Air Transat deal was found by Cheapflights users on 5/19. 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 Transat is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/173:20 pm
MDW
- YTZ
Nonstop1h 40m
Air Transat
Mon 8/108:50 am
YTZ
- MDW
Nonstop1h 50m
Air Transat
Deal found 5/19![Air Transat logo]()
$359
This KAYAK deal was found by Cheapflights users on 5/20. 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 6/16:55 am
ORD
- YUL
1 stop15h 04m
American Airlines
Wed 6/312:30 pm
YUL
- ORD
Nonstop2h 46m
American Airlines
Deal found 5/20![American Airlines logo]()
$495
This Delta deal was found by Cheapflights users on 5/20. 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 6/119:17 am
MDW
- YYZ
1 stop7h 07m
Delta
Sun 6/1412:09 pm
YYZ
- MDW
1 stop7h 22m
Delta
Deal found 5/20![Delta logo]()
$269
This United Airlines deal was found by Cheapflights users on 5/19. 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 6/53:53 pm
ORD
- YYZ
1 stop7h 01m
United Airlines
Sun 6/79:00 pm
YYZ
- ORD
Nonstop2h 05m
United Airlines
Deal found 5/19![United Airlines logo]()
$288
This Porter Airlines deal was found by Cheapflights users on 5/17. 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.
Thu 6/113:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sun 6/148:45 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/17![Porter Airlines logo]()
$295
This United Airlines deal was found by Cheapflights users on 5/17. 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 6/125:55 pm
ORD
- YYZ
Nonstop1h 49m
United Airlines
Tue 6/163:00 pm
YYZ
- ORD
1 stop7h 00m
United Airlines
Deal found 5/17![United Airlines logo]()
$294
This Kiwi.com deal was found by Cheapflights users on 5/21. 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.
Mon 8/103:15 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Wed 8/128:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/21![Porter Airlines logo]()
$301
This Delta deal was found by Cheapflights users on 5/21. 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 6/129:17 am
MDW
- YYZ
1 stop7h 07m
Delta
Sun 6/1412:09 pm
YYZ
- MDW
1 stop7h 22m
Delta
Deal found 5/21![Delta logo]()
$302
This Air Canada deal was found by Cheapflights users on 5/19. 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.
Sun 6/143:45 pm
ORD
- YXU
1 stop4h 53m
Air Canada
Wed 6/175:10 am
YXU
- ORD
1 stop4h 50m
Air Canada
Deal found 5/19![Air Canada logo]()
$667
This United Airlines deal was found by Cheapflights users on 5/20. 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 6/247:09 am
ORD
- YYZ
Nonstop1h 45m
United Airlines
Fri 6/268:45 am
YYZ
- ORD
Nonstop2h 00m
United Airlines
Deal found 5/20![United Airlines logo]()
$299
This Air Transat deal was found by Cheapflights users on 5/19. 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 Transat 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
Air Transat
Mon 6/291:45 pm
YTZ
- MDW
Nonstop1h 50m
Air Transat
Deal found 5/19![Air Transat logo]()
$365
This Delta deal was found by Cheapflights users on 5/21. 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 6/65:19 pm
ORD
- YYZ
1 stop4h 40m
Delta
Tue 6/94:10 pm
YYZ
- ORD
1 stop5h 21m
Delta
Deal found 5/21![Delta logo]()
$303
This WestJet deal was found by Cheapflights users on 5/21. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/245:30 pm
ORD
- YHM
1 stop22h 45m
WestJet
Mon 9/286:10 pm
YHM
- ORD
1 stop23h 30m
WestJet
Deal found 5/21![WestJet logo]()
$761
This KAYAK deal was found by Cheapflights users on 5/19. 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 6/1510:15 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Tue 6/168:45 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/19![Porter Airlines logo]()
$331
This Delta deal was found by Cheapflights users on 5/17. 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 6/209:17 am
MDW
- YYZ
1 stop5h 02m
Delta
Tue 6/236:05 am
YYZ
- MDW
1 stop7h 41m
Delta
Deal found 5/17![Delta logo]()
$303
This Air Transat deal was found by Cheapflights users on 5/19. 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 Transat 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
Air Transat
Sat 6/278:50 am
YTZ
- MDW
Nonstop1h 50m
Air Transat
Deal found 5/19![Air Transat logo]()
$370
This United Airlines deal was found by Cheapflights users on 5/21. 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 6/207:25 am
ORD
- YTZ
Nonstop1h 41m
United Airlines
Mon 6/227:20 pm
YTZ
- ORD
Nonstop1h 56m
United Airlines
Deal found 5/21![United Airlines logo]()
$310
This Delta deal was found by Cheapflights users on 5/19. 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 6/109:17 am
MDW
- YYZ
1 stop3h 17m
Delta
Sat 6/136:05 am
YYZ
- MDW
1 stop7h 41m
Delta
Deal found 5/19![Delta logo]()
$303
This Porter Airlines deal was found by Cheapflights users on 5/20. 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.
Tue 6/1610:15 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sat 6/208:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/20![Porter Airlines logo]()
$339
This United Airlines deal was found by Cheapflights users on 5/19. 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 8/155:50 am
ORD
- YYZ
1 stop4h 53m
United Airlines
Sun 8/167:00 am
YYZ
- ORD
Nonstop2h 00m
United Airlines
Deal found 5/19![United Airlines logo]()
$329
This Delta deal was found by Cheapflights users on 5/18. 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
Tue 6/166:05 am
YYZ
- MDW
1 stop7h 41m
Delta
Deal found 5/18![Delta logo]()
$303
This KAYAK deal was found by Cheapflights users on 5/18. 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 6/1510:15 am
MDW
- YTZ
Nonstop1h 40m
Air Transat
Tue 6/168:45 am
YTZ
- MDW
Nonstop1h 50m
Air Transat
Deal found 5/18![Air Transat logo]()
$412
This United Airlines deal was found by Cheapflights users on 5/18. 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 7/199:00 pm
YYZ
- ORD
Nonstop2h 05m
United Airlines
Deal found 5/18![United Airlines logo]()
$329
This Delta deal was found by Cheapflights users on 5/20. 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 6/2411:30 am
ORD
- YYZ
1 stop4h 54m
Delta
Fri 6/269:45 am
YYZ
- ORD
1 stop7h 41m
Delta
Deal found 5/20![Delta logo]()
$307
This Porter 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 Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/43:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Mon 6/88:45 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/22![Porter Airlines logo]()
$375
This Kiwi.com deal was found by Cheapflights users on 5/17. 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 8/135:30 pm
ORD
- YOW
1 stop11h 05m
Multiple Airlines
Mon 8/172:10 pm
YOW
- ORD
2 stops18h 53m
Multiple Airlines
Deal found 5/17![Multiple Airlines logo]()
$554
Last-minute flights from Chicago to OntarioDiscover last-minute flight deals from Chicago to Ontario. Data last updated May 22, 2026 and is based on user searches.
Discover last-minute flight deals from Chicago to Ontario. Data last updated May 22, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 5/20. 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 6/310:15 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sat 6/138:45 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/20![Porter Airlines logo]()
$217
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 6/53:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Mon 6/88:45 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/22![Porter Airlines logo]()
$224
This Kiwi.com deal was found by Cheapflights users on 5/20. 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
Wed 6/108:45 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/20![Porter Airlines logo]()
$220
This Cheapflightsfares deal was found by Cheapflights users on 5/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/83:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Thu 6/111:45 pm
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/21![Porter Airlines logo]()
$223
This Flightnetwork deal was found by Cheapflights users on 5/18. 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.
Tue 6/97:25 am
ORD
- YTZ
Nonstop1h 41m
Air Canada
Fri 6/127:20 pm
YTZ
- ORD
Nonstop1h 56m
Air Canada
Deal found 5/18![Air Canada logo]()
$227
This Trip.com deal was found by Cheapflights users on 5/20. 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 6/1210:15 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sun 6/148:45 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/20![Porter Airlines logo]()
$225
This FlightHub deal was found by Cheapflights users on 5/21. 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 6/1310:15 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sat 6/208:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/21![Porter Airlines logo]()
$216
This Booking.com deal was found by Cheapflights users on 5/20. 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 Booking.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 5/20![Porter Airlines logo]()
$218
This FlightHub deal was found by Cheapflights users on 5/21. 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 6/1310:15 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Mon 6/158:45 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/21![Porter Airlines logo]()
$222
This FlightHub deal was found by Cheapflights users on 5/20. 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.
Wed 6/1710:15 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sun 6/218:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/20![Porter Airlines logo]()
$214
This Kiwi.com deal was found by Cheapflights users on 5/19. 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
- YTZ
Nonstop1h 40m
Porter Airlines
Mon 6/228:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/19![Porter Airlines logo]()
$226
This Kiwi.com deal was found by Cheapflights users on 5/20. 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 6/2510:25 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Fri 6/261:45 pm
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 5/20![Porter Airlines logo]()
$221
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 22, 2026.
Search for one-way flight options from Chicago to Ontario. Find affordable one-way fares based on user searches. Data last updated May 22, 2026.
This Air Canada deal was found by Cheapflights users on 5/19. 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.
Tue 6/167:25 am
ORD
- YTZ
Nonstop1h 41m
Air Canada
Deal found 5/19![Air Canada logo]()
$93
This Air Canada deal was found by Cheapflights users on 5/19. 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.
Tue 6/168:20 pm
ORD
- YYZ
Nonstop1h 43m
Air Canada
Deal found 5/19![Air Canada logo]()
$93
This deal was found by Cheapflights users on 5/19. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/1710:15 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Deal found 5/19![Porter Airlines logo]()
$95
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.
Tue 6/169:20 pm
ORD
- YYZ
Nonstop1h 39m
United Airlines
Deal found 5/22![United Airlines logo]()
$95
This Super.com deal was found by Cheapflights users on 5/20. 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 9/37:00 am
ORD
- YTZ
Nonstop1h 40m
Porter Airlines
Deal found 5/20![Porter Airlines logo]()
$97
This Super.com deal was found by Cheapflights users on 5/21. 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 5/21![Porter Airlines logo]()
$98
This Mytrip deal was found by Cheapflights users on 5/17. 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.
Sun 6/77:25 am
ORD
- YTZ
Nonstop1h 41m
Air Canada
Deal found 5/17![Air Canada logo]()
$98
This Trip.com deal was found by Cheapflights users on 5/20. 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.
Thu 6/410:15 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Deal found 5/20![Porter Airlines logo]()
$99
This Mytrip deal was found by Cheapflights users on 5/21. 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.
Mon 6/83:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Deal found 5/21![Porter Airlines logo]()
$100
This Flightnetwork deal was found by Cheapflights users on 5/18. 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 6/202:00 pm
ORD
- YTZ
Nonstop1h 41m
Air Canada
Deal found 5/18![Air Canada logo]()
$100
This Flightnetwork deal was found by Cheapflights users on 5/18. 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 6/203:45 pm
ORD
- YYZ
Nonstop1h 46m
Air Canada
Deal found 5/18![Air Canada logo]()
$100
This Trip.com deal was found by Cheapflights users on 5/20. 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.
Wed 6/310:15 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Deal found 5/20![Porter Airlines logo]()
$102
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 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $214 (FlightHub) |
One-way from | $93 (Air Canada) |
Popular in | April |
Cheapest in | September |
Average price | $275 |
Good round-trip deal | $218 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 22, 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
Thu 6/4
3:20 pm-6:00 pm
Nonstop1h 40m
Toronto Island
Sat 6/6
8:45 am-9:35 am
Nonstop1h 50m
$251
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
Thu 6/11
8:52 am-5:24 pm
1 stop7h 32m
Toronto Pearson Intl
Sun 6/14
12:09 pm-6:29 pm
1 stop7h 20m
$269
ChicagoToronto
MDW - YYZ
MDWYYZ
Chicago Midway
Thu 6/11
9:17 am-5:24 pm
1 stop7h 07m
Toronto Pearson Intl
Sun 6/14
12:09 pm-6:31 pm
1 stop7h 22m
$269
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
Thu 6/11
2:56 pm-5:56 pm
Nonstop2h 00m
Toronto Pearson Intl
Tue 6/16
7:00 am-8:00 am
Nonstop2h 00m
$278
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
Fri 7/24
10:20 am-1:00 pm
Nonstop1h 40m
Toronto Island
Tue 7/28
8:50 am-9:40 am
Nonstop1h 50m
$286
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
Fri 6/5
3:53 pm-11:54 pm
1 stop7h 01m
Toronto Pearson Intl
Sun 6/7
9:00 pm-10:05 pm
Nonstop2h 05m
$288
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
Fri 6/12
5:55 pm-8:44 pm
Nonstop1h 49m
Toronto Pearson Intl
Tue 6/16
3:00 pm-9:00 pm
1 stop7h 00m
$294
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
Thu 6/11
3:20 pm-6:00 pm
Nonstop1h 40m
Toronto Island
Sun 6/14
8:45 am-9:35 am
Nonstop1h 50m
$295
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
Wed 6/24
7:09 am-9:54 am
Nonstop1h 45m
Toronto Pearson Intl
Fri 6/26
8:45 am-9:45 am
Nonstop2h 00m
$299
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
Mon 8/10
3:15 pm-5:55 pm
Nonstop1h 40m
Toronto Island
Wed 8/12
8:50 am-9:40 am
Nonstop1h 50m
$301
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-YTZ
ORD-YYZ
ORD-YHM
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-YTZ
ORD-YYZ
ORD-YHM
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 22, 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 22, 2026.
The most flights from CHI to CAON are scheduled on a Thursday (72 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 16, 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 22, 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.
Entertainment
7.0
Comfort
8.0
Crew
8.6
Food
7.6
Boarding
8.2
Overall
8.0
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Entertainment
7.0
Comfort
8.0
Crew
8.6
Food
7.6
Boarding
8.2
Overall
8.0
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Entertainment
7.0
Comfort
8.0
Crew
8.6
Food
7.6
Boarding
8.2
Overall
8.0
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Entertainment
7.0
Comfort
8.0
Crew
8.6
Food
7.6
Boarding
8.2
Overall
8.0
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Entertainment
7.0
Comfort
8.0
Crew
8.6
Food
7.6
Boarding
8.2
Overall
8.0
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Entertainment
7.0
Comfort
8.0
Crew
8.6
Food
7.6
Boarding
8.2
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 22, 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 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$88 | Average$303 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$94 | Average$344 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$149 | Average$433 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$160 | Average$403 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$170 | Average$319 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$172 | Average$371 | FlexibilityNo cancel fee | On-time52% | |
| Cheapest$209 | Average$369 | FlexibilityNo cancel fee | On-time71% |