$101+ Cheap flights from Illinois 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 6/27. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — YYZ
Jul 13 — Jul 201
Round-trip
1 adult, Economy
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Find cheap flights from Illinois to Ontario with Cheapflights
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Cheapest flights from Illinois to OntarioExplore the most affordable flight options available from Illinois to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 13, 2026.
Explore the most affordable flight options available from Illinois to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 13, 2026.
This Trip.com deal was found by Cheapflights users on 6/10. 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 6/253:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Mon 6/298:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 6/10![Porter Airlines logo]()
$218
This FlightHub deal was found by Cheapflights users on 6/11. 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.
Mon 9/2111:45 am
ORD
- YTZ
Nonstop1h 40m
Porter Airlines
Mon 9/288:40 pm
YTZ
- ORD
Nonstop1h 55m
Porter Airlines
Deal found 6/11![Porter Airlines logo]()
$218
This Trip.com deal was found by Cheapflights users on 6/9. 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 9/143:45 pm
ORD
- YYZ
Nonstop1h 45m
Air Canada
Fri 9/188:05 am
YYZ
- ORD
Nonstop1h 55m
Air Canada
Deal found 6/9![Air Canada logo]()
$218
This Trip.com deal was found by Cheapflights users on 6/11. 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 7/103:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Mon 7/131:45 pm
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 6/11![Porter Airlines logo]()
$219
This Justfly.com deal was found by Cheapflights users on 6/11. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/243:20 pm
ORD
- YTZ
Nonstop1h 40m
Porter Airlines
Mon 9/288:40 pm
YTZ
- ORD
Nonstop1h 55m
Porter Airlines
Deal found 6/11![Porter Airlines logo]()
$219
This Flightnetwork deal was found by Cheapflights users on 6/9. 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 7/115:35 pm
ORD
- YYZ
Nonstop1h 45m
Air Canada
Wed 7/154:00 pm
YYZ
- ORD
Nonstop1h 57m
Air Canada
Deal found 6/9![Air Canada logo]()
$219
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 6/2810:25 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sat 7/48:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 6/11![Porter Airlines logo]()
$220
This Vliegwinkel deal was found by Cheapflights users on 6/12. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/262:00 pm
ORD
- YTZ
Nonstop1h 42m
Air Canada
Mon 6/297:25 pm
YTZ
- ORD
Nonstop2h 04m
Air Canada
Deal found 6/12![Air Canada logo]()
$220
This Trip.com deal was found by Cheapflights users on 6/9. 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 9/159:50 am
ORD
- YYZ
Nonstop1h 45m
Air Canada
Fri 9/186:15 am
YYZ
- ORD
1 stop5h 02m
Air Canada
Deal found 6/9![Air Canada logo]()
$220
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 7/93:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Thu 7/168:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 6/12![Porter Airlines logo]()
$221
This Booking.com deal was found by Cheapflights users on 6/10. 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.
Thu 7/22:00 pm
ORD
- YTZ
Nonstop1h 42m
Air Canada
Thu 7/912:15 pm
YTZ
- ORD
Nonstop2h 04m
Air Canada
Deal found 6/10![Air Canada logo]()
$221
This Mytrip deal was found by Cheapflights users on 6/9. 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 7/72:15 pm
ORD
- YYZ
Nonstop1h 46m
Air Canada
Tue 7/148:05 am
YYZ
- ORD
Nonstop1h 55m
Air Canada
Deal found 6/9![Air Canada logo]()
$221
Best flights from Illinois to OntarioDiscover carefully curated flight deals from Illinois to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 13, 2026.
Discover carefully curated flight deals from Illinois to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 13, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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.
Sat 7/410:25 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sun 7/128:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 6/10![Porter Airlines logo]()
$225
This United Airlines deal was found by Cheapflights users on 6/8. 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 6/257:25 am
ORD
- YTZ
Nonstop1h 41m
United Airlines
Sun 6/287:20 pm
YTZ
- ORD
Nonstop1h 56m
United Airlines
Deal found 6/8![United Airlines logo]()
$256
This United deal was found by Cheapflights users on 6/11. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/174:35 pm
ORD
- YYZ
Nonstop2h 02m
Multiple Airlines
Sat 8/292:00 pm
YYZ
- ORD
Nonstop1h 55m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$265
This SmartFares deal was found by Cheapflights users on 6/11. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/2610:25 am
MDW
- YTZ
Nonstop1h 40m
Air Transat
Tue 6/308:50 am
YTZ
- MDW
Nonstop1h 50m
Air Transat
Deal found 6/11![Air Transat logo]()
$270
This Delta deal was found by Cheapflights users on 6/12. 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 9/39:24 am
MDW
- YYZ
1 stop7h 00m
Delta
Mon 9/76:10 am
YYZ
- MDW
1 stop7h 29m
Delta
Deal found 6/12![Delta logo]()
$281
This KAYAK deal was found by Cheapflights users on 6/10. 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 8/316:25 am
ORD
- YTZ
2 stops10h 55m
Air Canada
Thu 9/33:35 pm
YTZ
- ORD
2 stops8h 47m
Air Canada
Deal found 6/10![Air Canada logo]()
$377
This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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.
Wed 7/13:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sat 7/48:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 6/11![Porter Airlines logo]()
$225
This United Airlines deal was found by Cheapflights users on 6/8. 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 7/167:25 am
ORD
- YTZ
Nonstop1h 41m
United Airlines
Tue 7/217:20 pm
YTZ
- ORD
Nonstop1h 56m
United Airlines
Deal found 6/8![United Airlines logo]()
$256
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 7/313:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sun 8/28:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 6/10![Porter Airlines logo]()
$237
This American Airlines deal was found by Cheapflights users on 6/12. 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.
Thu 10/158:00 am
ORD
- YOW
1 stop5h 55m
American Airlines
Sun 10/2510:00 am
YOW
- ORD
1 stop6h 55m
American Airlines
Deal found 6/12![American Airlines logo]()
$524
This United Airlines deal was found by Cheapflights users on 6/9. 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 8/2012:56 pm
ORD
- YTZ
1 stop4h 46m
United Airlines
Tue 9/87:20 pm
YTZ
- ORD
Nonstop1h 56m
United Airlines
Deal found 6/9![United Airlines logo]()
$257
This Delta deal was found by Cheapflights users on 6/11. 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 7/159:19 am
MDW
- YYZ
1 stop7h 05m
Delta
Thu 7/1612:09 pm
YYZ
- MDW
1 stop7h 16m
Delta
Deal found 6/11![Delta logo]()
$290
This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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.
Thu 7/1610:25 am
MDW
- YTZ
Nonstop1h 40m
Air Transat
Sun 7/198:50 am
YTZ
- MDW
Nonstop1h 50m
Air Transat
Deal found 6/10![Air Transat logo]()
$309
This Delta deal was found by Cheapflights users on 6/12. 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 8/229:24 am
MDW
- YYZ
1 stop7h 00m
Delta
Wed 8/266:10 am
YYZ
- MDW
1 stop7h 29m
Delta
Deal found 6/12![Delta logo]()
$290
This United Airlines deal was found by Cheapflights users on 6/10. 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 7/49:20 pm
ORD
- YYZ
Nonstop1h 39m
United Airlines
Mon 7/138:45 am
YYZ
- ORD
Nonstop2h 00m
United Airlines
Deal found 6/10![United Airlines logo]()
$265
This United deal was found by Cheapflights users on 6/12. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/197:10 am
ORD
- YUL
Nonstop2h 30m
Multiple Airlines
Wed 7/224:30 pm
YUL
- ORD
1 stop4h 59m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$341
This Delta deal was found by Cheapflights users on 6/12. 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 7/45:50 pm
MDW
- YYZ
1 stop4h 12m
Delta
Mon 7/66:05 am
YYZ
- MDW
1 stop7h 41m
Delta
Deal found 6/12![Delta logo]()
$290
This United Airlines deal was found by Cheapflights users on 6/10. 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 7/39:20 pm
ORD
- YYZ
Nonstop1h 39m
United Airlines
Sat 7/45:45 pm
YYZ
- ORD
Nonstop2h 06m
United Airlines
Deal found 6/10![United Airlines logo]()
$265
This FlightHub deal was found by Cheapflights users on 6/12. 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.
Thu 7/303:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Mon 8/38:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 6/12![Porter Airlines logo]()
$292
This Delta deal was found by Cheapflights users on 6/12. 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 8/71:27 pm
MDW
- YYZ
1 stop8h 36m
Delta
Tue 8/1812:09 pm
YYZ
- MDW
1 stop7h 24m
Delta
Deal found 6/12![Delta logo]()
$290
This United Airlines deal was found by Cheapflights users on 6/9. 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 7/39:20 pm
ORD
- YYZ
Nonstop1h 39m
United Airlines
Sat 7/115:45 pm
YYZ
- ORD
Nonstop2h 06m
United Airlines
Deal found 6/9![United Airlines logo]()
$265
This United deal was found by Cheapflights users on 6/12. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/311:07 am
ORD
- YTZ
1 stop6h 39m
Multiple Airlines
Tue 7/710:20 am
YTZ
- ORD
2 stops10h 45m
Multiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$365
This Delta deal was found by Cheapflights users on 6/10. 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 8/211:27 pm
MDW
- YYZ
1 stop8h 36m
Delta
Mon 8/246:10 am
YYZ
- MDW
1 stop7h 29m
Delta
Deal found 6/10![Delta logo]()
$290
This United Airlines deal was found by Cheapflights users on 6/9. 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 7/157:09 am
ORD
- YYZ
Nonstop1h 45m
United Airlines
Thu 7/168:45 am
YYZ
- ORD
Nonstop2h 00m
United Airlines
Deal found 6/9![United Airlines logo]()
$265
This Porter Airlines deal was found by Cheapflights users on 6/11. 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 7/2110:25 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Tue 7/281:45 pm
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 6/11![Porter Airlines logo]()
$329
This United Airlines deal was found by Cheapflights users on 6/9. 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 7/308:50 am
ORD
- YYZ
Nonstop1h 59m
United Airlines
Sun 8/210:15 am
YYZ
- ORD
Nonstop2h 06m
United Airlines
Deal found 6/9![United Airlines logo]()
$265
This United Airlines deal was found by Cheapflights users on 6/8. 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 8/2812:56 pm
ORD
- YTZ
1 stop4h 46m
United Airlines
Mon 8/3112:15 pm
YTZ
- ORD
Nonstop1h 55m
United Airlines
Deal found 6/8![United Airlines logo]()
$266
This Trip.com deal was found by Cheapflights users on 6/12. 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 6/253:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sun 6/281:45 pm
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 6/12![Porter Airlines logo]()
$355
This Delta deal was found by Cheapflights users on 6/12. 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 7/25:22 pm
ORD
- YYZ
1 stop4h 40m
Delta
Sun 7/56:05 am
YYZ
- ORD
1 stop5h 45m
Delta
Deal found 6/12![Delta logo]()
$323
This Delta deal was found by Cheapflights users on 6/10. 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 7/267:05 am
ORD
- YYZ
1 stop7h 15m
Delta
Sun 8/29:45 am
YYZ
- ORD
1 stop7h 38m
Delta
Deal found 6/10![Delta logo]()
$323
Last-minute flights from Illinois to OntarioDiscover last-minute flight deals from Illinois to Ontario. Data last updated June 13, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Ontario. Data last updated June 13, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 6/10. 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 6/253:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Mon 6/298:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 6/10![Porter Airlines logo]()
$218
This Mytrip deal was found by Cheapflights users on 6/12. 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.
Fri 6/262:00 pm
ORD
- YTZ
Nonstop1h 42m
Air Canada
Mon 6/2912:15 pm
YTZ
- ORD
Nonstop2h 04m
Air Canada
Deal found 6/12![Air Canada logo]()
$218
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 6/2810:25 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sat 7/48:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 6/11![Porter Airlines logo]()
$220
This Booking.com deal was found by Cheapflights users on 6/10. 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.
Thu 7/22:00 pm
ORD
- YTZ
Nonstop1h 42m
Air Canada
Thu 7/912:15 pm
YTZ
- ORD
Nonstop2h 04m
Air Canada
Deal found 6/10![Air Canada logo]()
$221
This Trip.com deal was found by Cheapflights users on 6/10. 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 7/23:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sun 7/58:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 6/10![Porter Airlines logo]()
$222
This Flightnetwork deal was found by Cheapflights users on 6/9. 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 7/72:15 pm
ORD
- YYZ
Nonstop1h 46m
Air Canada
Tue 7/144:00 pm
YYZ
- ORD
1 stop5h 05m
Air Canada
Deal found 6/9![Air Canada logo]()
$221
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 7/93:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Thu 7/168:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 6/12![Porter Airlines logo]()
$221
This Trip.com deal was found by Cheapflights users on 6/11. 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 7/103:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Mon 7/131:45 pm
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 6/11![Porter Airlines logo]()
$219
This Booking.com deal was found by Cheapflights users on 6/12. 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.
Fri 7/107:25 am
ORD
- YTZ
Nonstop1h 42m
Air Canada
Fri 7/177:25 pm
YTZ
- ORD
Nonstop2h 04m
Air Canada
Deal found 6/12![Air Canada logo]()
$219
This Flightnetwork deal was found by Cheapflights users on 6/9. 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 7/115:35 pm
ORD
- YYZ
Nonstop1h 45m
Air Canada
Wed 7/154:00 pm
YYZ
- ORD
Nonstop1h 57m
Air Canada
Deal found 6/9![Air Canada logo]()
$219
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 7/1110:25 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Wed 7/158:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 6/9![Porter Airlines logo]()
$223
This Mytrip deal was found by Cheapflights users on 6/10. 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 7/208:45 am
ORD
- YTZ
1 stop6h 06m
Air Canada
Sat 7/2512:15 pm
YTZ
- ORD
Nonstop2h 04m
Air Canada
Deal found 6/10![Air Canada logo]()
$223
One-way flights from Illinois to OntarioSearch for one-way flight options from Illinois to Ontario. Find affordable one-way fares based on user searches. Data last updated June 13, 2026.
Search for one-way flight options from Illinois to Ontario. Find affordable one-way fares based on user searches. Data last updated June 13, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 6/2710:25 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Deal found 6/9![Porter Airlines logo]()
$101
This Air Canada deal was found by Cheapflights users on 6/8. 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.
Mon 6/297:25 am
ORD
- YTZ
Nonstop1h 42m
Air Canada
Deal found 6/8![Air Canada logo]()
$101
This Air Canada deal was found by Cheapflights users on 6/8. 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.
Mon 6/295:35 pm
ORD
- YYZ
Nonstop1h 45m
Air Canada
Deal found 6/8![Air Canada logo]()
$101
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 7/1010:25 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Deal found 6/10![Porter Airlines logo]()
$102
This SmartFares deal was found by Cheapflights users on 6/12. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/315:18 pm
ORD
- YYZ
1 stop4h 44m
Delta
Deal found 6/12![Delta logo]()
$102
This Mytrip deal was found by Cheapflights users on 6/12. 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.
Wed 8/268:40 pm
ORD
- YYZ
Nonstop1h 45m
Air Canada
Deal found 6/12![Air Canada logo]()
$103
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 7/110:25 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Deal found 6/10![Porter Airlines logo]()
$104
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 7/710:25 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Deal found 6/8![Porter Airlines logo]()
$105
This Booking.com deal was found by Cheapflights users on 6/10. 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.
Thu 8/138:45 am
ORD
- YTZ
1 stop6h 06m
Air Canada
Deal found 6/10![Air Canada logo]()
$105
This FlightHub deal was found by Cheapflights users on 6/9. 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.
Tue 8/1110:20 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Deal found 6/9![Porter Airlines logo]()
$106
This Air Canada deal was found by Cheapflights users on 6/13. 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 6/307:25 am
ORD
- YTZ
Nonstop1h 42m
Air Canada
Deal found 6/13![Air Canada logo]()
$106
This United Airlines deal was found by Cheapflights users on 6/9. 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 7/38:50 am
ORD
- YYZ
Nonstop1h 59m
United Airlines
Deal found 6/9![United Airlines logo]()
$106
Find flight deals from Illinois to Ontario
Keep the following information in mind while searching for Illinois to Ontario flight deals. Data was last updated June 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $218 (Trip.com) |
One-way from | $101 (Kiwi.com) |
Popular in | April |
Cheapest in | September |
Average price | $278 |
Good round-trip deal | $241 or less |
Good one-way deal | $112 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois 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 June 13, 2026.
Use the filters below to find and compare flights from Illinois 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 7/4
10:25 am-1:05 pm
Nonstop1h 40m
Toronto Island
Sun 7/12
8:50 am-9:40 am
Nonstop1h 50m
$225
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
Wed 7/1
3:20 pm-6:00 pm
Nonstop1h 40m
Toronto Island
Sat 7/4
8:50 am-9:40 am
Nonstop1h 50m
$225
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
Fri 7/31
3:20 pm-6:00 pm
Nonstop1h 40m
Toronto Island
Sun 8/2
8:50 am-9:40 am
Nonstop1h 50m
$237
ChicagoToronto
ORD - YTZ
ORDYTZ
Chicago O'Hare Intl
Thu 6/25
7:25 am-10:06 am
Nonstop1h 41m
Toronto Island
Sun 6/28
7:20 pm-8:16 pm
Nonstop1h 56m
$256
ChicagoToronto
ORD - YTZ
ORDYTZ
Chicago O'Hare Intl
Thu 7/16
7:25 am-10:06 am
Nonstop1h 41m
Toronto Island
Tue 7/21
7:20 pm-8:16 pm
Nonstop1h 56m
$256
ChicagoToronto
ORD - YTZ
ORDYTZ
Chicago O'Hare Intl
Thu 8/20
12:56 pm-6:42 pm
1 stop4h 46m
Toronto Island
Tue 9/8
7:20 pm-8:16 pm
Nonstop1h 56m
$257
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
Mon 8/17
4:35 pm-7:37 pm
Nonstop2h 02m
Toronto Pearson Intl
Sat 8/29
2:00 pm-2:55 pm
Nonstop1h 55m
$265
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
Sat 7/4
9:20 pm-11:59 pm
Nonstop1h 39m
Toronto Pearson Intl
Mon 7/13
8:45 am-9:45 am
Nonstop2h 00m
$265
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
Fri 7/3
9:20 pm-11:59 pm
Nonstop1h 39m
Toronto Pearson Intl
Sat 7/4
5:45 pm-6:51 pm
Nonstop2h 06m
$265
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
Fri 7/3
9:20 pm-11:59 pm
Nonstop1h 39m
Toronto Pearson Intl
Sat 7/11
5:45 pm-6:51 pm
Nonstop2h 06m
$265
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Illinois to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Illinois with our price prediction graph.
MDW-YTZ
ORD-YTZ
ORD-YYZ
MDW-YYZ
ORD-YOW
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 Illinois to Ontario
USIL-CAON
MDW-YTZ
ORD-YTZ
ORD-YYZ
MDW-YYZ
What is the cheapest month to book a flight from Illinois to Region of Ontario?
Currently, March is the cheapest month in which you can book a flight from Illinois to Region of Ontario (average of $58). Flying from Illinois to Region of Ontario in October is currently the most expensive (average of $807). 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 IL to ON?
Find hourly flight availability from Illinois 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 June 13, 2026.
It’s optimal to fly from Illinois to Region of Ontario in the morning. By choosing this option you can save up to 28% on the cost of your flight, compared to a flight at noon.
Weekly flight availability from Illinois to Region of Ontario
Explore weekly flight availability from Illinois 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 June 13, 2026.
The most flights from USIL to CAON are scheduled on a Friday (69 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (35 on average).
How much does it cost to fly round-trip from Illinois to Region of Ontario?
How far ahead should I book a flight from Illinois to Region of Ontario?
The price you pay for your flight from Illinois to Region of Ontario may vary depending on when you book. For the best chance of a lower fare, look to book 64 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest day to fly from Illinois to Region of Ontario?
Use this chart to determine the cheapest time to fly round-trip from Illinois to Ontario. Price data was last updated on June 8, 2026.
Travelers seeking maximum savings on their Illinois 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 June 13, 2026.
Read through reviews of airlines operating flights from Illinois to Ontario, such as Porter Airlines,Delta, andUnited Airlines. 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
6.9
Crew
8.6
Boarding
8.2
Food
7.6
Overall
8.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodJustin,May 2026
YYZ - MCO
Entertainment
6.9
Crew
8.6
Boarding
8.2
Food
7.6
Overall
8.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodJustin,May 2026
YYZ - MCO
Entertainment
6.9
Crew
8.6
Boarding
8.2
Food
7.6
Overall
8.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodJustin,May 2026
YYZ - MCO
Entertainment
6.9
Crew
8.6
Boarding
8.2
Food
7.6
Overall
8.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodJustin,May 2026
YYZ - MCO
Entertainment
6.9
Crew
8.6
Boarding
8.2
Food
7.6
Overall
8.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodJustin,May 2026
YYZ - MCO
Entertainment
6.9
Crew
8.6
Boarding
8.2
Food
7.6
Overall
8.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodJustin,May 2026
YYZ - MCO
Related info for your journey
Find useful and relevant information for your journey from Illinois 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 Illinois 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 Illinois to Ontario by cabin class
Find flights from Illinois to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Illinois and Ontario flights
Browse other Illinois and Ontario flight options. Last updated on June 13, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Ontario
Find the right flight back to Illinois after your stay in Ontario
Illinois to Ontario flights
Consider these flights traveling from Illinois to Ontario.
Top 7 airlines flying from Illinois to Ontario
Discover the top 7 airlines that operate flights from Illinois 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 June 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$88 | Average$303 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$114 | Average$271 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$160 | Average$403 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$170 | Average$319 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$174 | Average$339 | FlexibilityNo cancel fee | On-time52% | |
| Cheapest$189 | Average$485 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$204 | Average$363 | FlexibilityNo cancel fee | On-time71% |