$91+ 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 4/17. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — YYZ
Apr 15 — Apr 221
Round-trip
1 adult, Economy
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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 March 16, 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 March 16, 2026.
This Trip.com deal was found by Cheapflights users on 3/16. 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 4/3011:00 am
MDW
- YUL
1 stop4h 30m
Porter Airlines
Thu 5/76:30 am
YUL
- MDW
1 stop4h 10m
Porter Airlines
Deal found 3/16![Porter Airlines logo]()
$204
This FlightHub deal was found by Cheapflights users on 3/16. 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 4/1611:00 am
MDW
- YTZ
Nonstop1h 42m
Porter Airlines
Sun 4/192:30 pm
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 3/16![Porter Airlines logo]()
$204
This Trip.com deal was found by Cheapflights users on 3/16. 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 4/174:05 pm
MDW
- YUL
1 stop5h 40m
Porter Airlines
Sun 4/1910:55 am
YUL
- MDW
1 stop5h 25m
Porter Airlines
Deal found 3/16![Porter Airlines logo]()
$205
This Booking.com deal was found by Cheapflights users on 3/12. 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.
Thu 5/78:45 am
ORD
- YUL
Nonstop2h 15m
Air Canada
Sun 5/108:40 am
YUL
- ORD
Nonstop2h 38m
Air Canada
Deal found 3/12![Air Canada logo]()
$205
This Booking.com deal was found by Cheapflights users on 3/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1612:50 pm
ORD
- YUL
Nonstop2h 15m
Air Canada
Sun 4/199:15 am
YUL
- ORD
Nonstop2h 38m
Air Canada
Deal found 3/13![Air Canada logo]()
$207
This Trip.com deal was found by Cheapflights users on 3/15. 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 4/2311:00 am
MDW
- YUL
1 stop4h 30m
Porter Airlines
Sun 4/269:50 am
YUL
- MDW
1 stop6h 30m
Porter Airlines
Deal found 3/15![Porter Airlines logo]()
$210
This Flightnetwork deal was found by Cheapflights users on 3/13. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/253:45 pm
ORD
- YUL
Nonstop2h 11m
Air Canada
Mon 4/2712:00 pm
YUL
- ORD
1 stop6h 50m
Air Canada
Deal found 3/13![Air Canada logo]()
$210
This Mytrip deal was found by Cheapflights users on 3/16. 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 6/173:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sun 6/211:45 pm
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 3/16![Porter Airlines logo]()
$211
This Trip.com deal was found by Cheapflights users on 3/16. 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 5/1110:25 am
MDW
- YUL
1 stop5h 50m
Porter Airlines
Mon 5/186:30 am
YUL
- MDW
1 stop4h 10m
Porter Airlines
Deal found 3/16![Porter Airlines logo]()
$216
This Mytrip deal was found by Cheapflights users on 3/16. 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 6/22:00 pm
ORD
- YUL
1 stop6h 45m
Air Canada
Fri 6/52:30 pm
YUL
- ORD
1 stop6h 46m
Air Canada
Deal found 3/16![Air Canada logo]()
$216
This Mytrip deal was found by Cheapflights users on 3/16. 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 4/3011:00 am
MDW
- YTZ
Nonstop1h 42m
Porter Airlines
Thu 5/78:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 3/16![Porter Airlines logo]()
$217
This Super.com deal was found by Cheapflights users on 3/13. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/133:20 pm
MDW
- YUL
1 stop5h 50m
Porter Airlines
Wed 5/206:30 am
YUL
- MDW
1 stop4h 10m
Porter Airlines
Deal found 3/13![Porter Airlines logo]()
$218
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 March 16, 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 March 16, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/11. 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.
Thu 5/143:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sun 5/178:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 3/11![Porter Airlines logo]()
$229
This Mytrip deal was found by Cheapflights users on 3/15. 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 4/3011:00 am
MDW
- YTZ
Nonstop1h 42m
Multiple Airlines
Thu 5/71:45 pm
YTZ
- MDW
Nonstop1h 50m
Multiple Airlines
Deal found 3/15![Multiple Airlines logo]()
$240
This United Airlines deal was found by Cheapflights users on 3/11. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/186:00 am
ORD
- YUL
1 stop6h 09m
United Airlines
Sat 4/256:10 am
YUL
- ORD
Nonstop2h 50m
United Airlines
Deal found 3/11![United Airlines logo]()
$246
This Delta deal was found by Cheapflights users on 3/11. 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.
Sun 4/127:10 am
ORD
- YUL
1 stop3h 49m
Delta
Wed 4/156:00 am
YUL
- ORD
1 stop7h 45m
Delta
Deal found 3/11![Delta logo]()
$261
This Air Canada deal was found by Cheapflights users on 3/16. 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.
Fri 6/52:00 pm
ORD
- YTZ
Nonstop1h 41m
Air Canada
Wed 6/107:20 pm
YTZ
- ORD
Nonstop1h 56m
Air Canada
Deal found 3/16![Air Canada logo]()
$302
This American Airlines deal was found by Cheapflights users on 3/12. 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.
Sat 4/112:33 pm
STL
- YUL
1 stop20h 11m
American Airlines
Sat 4/181:03 pm
YUL
- STL
2 stops11h 43m
American Airlines
Deal found 3/12![American Airlines logo]()
$411
This Kiwi.com deal was found by Cheapflights users on 3/11. 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.
Thu 4/211:00 am
MDW
- YTZ
Nonstop1h 42m
Porter Airlines
Sun 4/59:25 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 3/11![Porter Airlines logo]()
$229
This Kiwi.com deal was found by Cheapflights users on 3/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/157:30 am
MDW
- YTZ
2 stops11h 33m
Multiple Airlines
Tue 4/219:25 am
YTZ
- MDW
Nonstop1h 50m
Multiple Airlines
Deal found 3/13![Multiple Airlines logo]()
$243
This United Airlines deal was found by Cheapflights users on 3/11. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/288:45 am
ORD
- YUL
1 stop4h 55m
United Airlines
Wed 4/296:10 am
YUL
- ORD
Nonstop2h 50m
United Airlines
Deal found 3/11![United Airlines logo]()
$246
This Kiwi.com deal was found by Cheapflights users on 3/15. 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 4/2911:00 am
MDW
- YTZ
Nonstop1h 42m
Porter Airlines
Wed 5/61:45 pm
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 3/15![Porter Airlines logo]()
$243
This United Airlines deal was found by Cheapflights users on 3/11. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/176:00 am
ORD
- YUL
1 stop6h 09m
United Airlines
Wed 5/205:00 pm
YUL
- ORD
Nonstop2h 52m
United Airlines
Deal found 3/11![United Airlines logo]()
$246
This Gotogate deal was found by Cheapflights users on 3/12. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/174:05 pm
MDW
- YTZ
Nonstop1h 42m
Multiple Airlines
Sun 4/192:30 pm
YTZ
- MDW
Nonstop1h 50m
Multiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$254
This Delta deal was found by Cheapflights users on 3/11. 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.
Sat 5/161:22 pm
MDW
- YUL
1 stop8h 51m
Delta
Wed 5/206:00 am
YUL
- MDW
1 stop3h 43m
Delta
Deal found 3/11![Delta logo]()
$283
This FlightHub deal was found by Cheapflights users on 3/11. 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.
Fri 6/195:30 pm
STL
- YYZ
1 stop4h 28m
WestJet
Tue 6/3012:30 pm
YYZ
- STL
1 stop5h 15m
WestJet
Deal found 3/11![WestJet logo]()
$574
This Vliegwinkel deal was found by Cheapflights users on 3/14. 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.
Sat 5/210:25 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Mon 5/48:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 3/14![Porter Airlines logo]()
$243
This United Airlines deal was found by Cheapflights users on 3/11. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/1512:55 pm
ORD
- YUL
1 stop10h 18m
United Airlines
Mon 5/186:10 am
YUL
- ORD
Nonstop2h 50m
United Airlines
Deal found 3/11![United Airlines logo]()
$246
This Air Canada deal was found by Cheapflights users on 3/16. 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.
Thu 6/42:00 pm
ORD
- YTZ
Nonstop1h 41m
Air Canada
Mon 6/157:20 pm
YTZ
- ORD
Nonstop1h 56m
Air Canada
Deal found 3/16![Air Canada logo]()
$302
This Delta deal was found by Cheapflights users on 3/11. 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 4/16:34 pm
MDW
- YUL
1 stop3h 39m
Delta
Wed 5/66:00 am
YUL
- MDW
1 stop7h 43m
Delta
Deal found 3/11![Delta logo]()
$283
This FlightHub deal was found by Cheapflights users on 3/15. 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 5/83:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Mon 5/118:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 3/15![Porter Airlines logo]()
$254
This Delta deal was found by Cheapflights users on 3/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/131:59 pm
MDW
- YUL
1 stop8h 42m
Delta
Wed 5/2012:49 pm
YUL
- MDW
1 stop6h 44m
Delta
Deal found 3/13![Delta logo]()
$283
This FlightHub deal was found by Cheapflights users on 3/14. 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 5/3010:25 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sun 5/318:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 3/14![Porter Airlines logo]()
$256
This Delta deal was found by Cheapflights users on 3/11. 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 4/2212:52 pm
MDW
- YUL
1 stop9h 59m
Delta
Sun 4/266:00 am
YUL
- MDW
1 stop7h 43m
Delta
Deal found 3/11![Delta logo]()
$283
This United Airlines deal was found by Cheapflights users on 3/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/42:58 pm
ORD
- YYZ
Nonstop1h 58m
United Airlines
Wed 5/61:00 pm
YYZ
- ORD
Nonstop2h 01m
United Airlines
Deal found 3/13![United Airlines logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 3/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/86:01 pm
ORD
- YTZ
1 stop15h 24m
Multiple Airlines
Sun 4/126:15 pm
YTZ
- ORD
1 stop7h 07m
Multiple Airlines
Deal found 3/13![Multiple Airlines logo]()
$339
This Delta deal was found by Cheapflights users on 3/11. 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.
Sun 5/176:23 am
MDW
- YUL
1 stop10h 19m
Delta
Wed 5/2012:49 pm
YUL
- MDW
1 stop6h 44m
Delta
Deal found 3/11![Delta logo]()
$283
This FlightHub deal was found by Cheapflights users on 3/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/133:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Wed 5/208:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 3/13![Porter Airlines logo]()
$260
This United Airlines deal was found by Cheapflights users on 3/11. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/15:55 pm
ORD
- YYZ
Nonstop1h 49m
United Airlines
Thu 6/48:50 am
YYZ
- ORD
Nonstop2h 00m
United Airlines
Deal found 3/11![United Airlines logo]()
$289
This Delta deal was found by Cheapflights users on 3/12. 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 4/231:24 pm
MDW
- YUL
1 stop8h 44m
Delta
Mon 4/2712:50 pm
YUL
- MDW
1 stop10h 38m
Delta
Deal found 3/12![Delta logo]()
$283
This FlightHub deal was found by Cheapflights users on 3/14. 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 6/1310:25 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Wed 6/178:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 3/14![Porter Airlines logo]()
$263
This Delta deal was found by Cheapflights users on 3/15. 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 5/155:10 pm
MDW
- YUL
1 stop5h 47m
Delta
Mon 5/186:00 am
YUL
- MDW
1 stop7h 42m
Delta
Deal found 3/15![Delta logo]()
$283
Last-minute flights from Illinois to OntarioDiscover last-minute flight deals from Illinois to Ontario. Data last updated March 16, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Ontario. Data last updated March 16, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 3/16. 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 4/811:00 am
MDW
- YTZ
Nonstop1h 42m
Porter Airlines
Wed 4/229:25 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 3/16![Porter Airlines logo]()
$220
This Kiwi.com deal was found by Cheapflights users on 3/15. 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 4/124:05 pm
MDW
- YTZ
Nonstop1h 42m
Porter Airlines
Wed 4/159:25 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 3/15![Porter Airlines logo]()
$223
This FlightHub deal was found by Cheapflights users on 3/16. 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 4/1611:00 am
MDW
- YTZ
Nonstop1h 42m
Porter Airlines
Sun 4/192:30 pm
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 3/16![Porter Airlines logo]()
$204
This Booking.com deal was found by Cheapflights users on 3/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1612:50 pm
ORD
- YUL
Nonstop2h 15m
Air Canada
Sun 4/199:15 am
YUL
- ORD
Nonstop2h 38m
Air Canada
Deal found 3/13![Air Canada logo]()
$207
This Trip.com deal was found by Cheapflights users on 3/16. 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 4/174:05 pm
MDW
- YUL
1 stop5h 40m
Porter Airlines
Sun 4/1910:55 am
YUL
- MDW
1 stop5h 25m
Porter Airlines
Deal found 3/16![Porter Airlines logo]()
$205
This Trip.com deal was found by Cheapflights users on 3/15. 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 4/1812:55 pm
MDW
- YTZ
Nonstop1h 42m
Multiple Airlines
Wed 4/229:25 am
YTZ
- MDW
Nonstop1h 50m
Multiple Airlines
Deal found 3/15![Multiple Airlines logo]()
$219
This Trip.com deal was found by Cheapflights users on 3/15. 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 4/2311:00 am
MDW
- YUL
1 stop4h 30m
Porter Airlines
Sun 4/269:50 am
YUL
- MDW
1 stop6h 30m
Porter Airlines
Deal found 3/15![Porter Airlines logo]()
$210
This Trip.com deal was found by Cheapflights users on 3/12. 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.
Fri 4/244:05 pm
MDW
- YUL
1 stop5h 40m
Porter Airlines
Mon 4/276:50 am
YUL
- MDW
1 stop4h 25m
Porter Airlines
Deal found 3/12![Porter Airlines logo]()
$221
This Flightnetwork deal was found by Cheapflights users on 3/13. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/253:45 pm
ORD
- YUL
Nonstop2h 11m
Air Canada
Mon 4/2712:00 pm
YUL
- ORD
1 stop6h 50m
Air Canada
Deal found 3/13![Air Canada logo]()
$210
This Air Canada deal was found by Cheapflights users on 3/12. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/258:40 am
ORD
- YUL
Nonstop2h 11m
Air Canada
Sat 4/253:15 pm
YUL
- ORD
1 stop5h 10m
Air Canada
Deal found 3/12![Air Canada logo]()
$219
This Trip.com deal was found by Cheapflights users on 3/16. 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 4/3011:00 am
MDW
- YUL
1 stop4h 30m
Porter Airlines
Thu 5/76:30 am
YUL
- MDW
1 stop4h 10m
Porter Airlines
Deal found 3/16![Porter Airlines logo]()
$204
This Mytrip deal was found by Cheapflights users on 3/16. 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 4/3011:00 am
MDW
- YTZ
Nonstop1h 42m
Porter Airlines
Thu 5/78:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 3/16![Porter Airlines logo]()
$217
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 March 16, 2026.
Search for one-way flight options from Illinois to Ontario. Find affordable one-way fares based on user searches. Data last updated March 16, 2026.
This FlightHub deal was found by Cheapflights users on 3/16. 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 4/711:00 am
MDW
- YTZ
Nonstop1h 42m
Porter Airlines
Deal found 3/16![Porter Airlines logo]()
$91
This United Airlines deal was found by Cheapflights users on 3/11. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/106:01 pm
ORD
- YUL
Nonstop2h 25m
United Airlines
Deal found 3/11![United Airlines logo]()
$91
This Trip.com deal was found by Cheapflights users on 3/12. 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.
Sun 5/103:20 pm
MDW
- YUL
1 stop5h 50m
Porter Airlines
Deal found 3/12![Porter Airlines logo]()
$93
This oojo deal was found by Cheapflights users on 3/16. 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.
Thu 5/73:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Deal found 3/16![Porter Airlines logo]()
$94
This Porter Airlines deal was found by Cheapflights users on 3/16. 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 4/3011:00 am
MDW
- YTZ
Nonstop1h 42m
Porter Airlines
Deal found 3/16![Porter Airlines logo]()
$95
This SmartFares deal was found by Cheapflights users on 3/13. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/246:40 pm
ORD
- YUL
1 stop4h 51m
Air Canada
Deal found 3/13![Air Canada logo]()
$95
This Air Canada deal was found by Cheapflights users on 3/12. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/12:00 pm
ORD
- YUL
1 stop4h 45m
Air Canada
Deal found 3/12![Air Canada logo]()
$96
This Kiwi.com deal was found by Cheapflights users on 3/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/146:01 pm
ORD
- YYZ
2 stops25h 09m
Multiple Airlines
Deal found 3/13![Multiple Airlines logo]()
$97
This FlightHub deal was found by Cheapflights users on 3/15. 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.
Sun 4/511:00 am
MDW
- YUL
1 stop4h 30m
Porter Airlines
Deal found 3/15![Porter Airlines logo]()
$98
This Booking.com deal was found by Cheapflights users on 3/14. 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.
Tue 4/288:40 am
ORD
- YUL
Nonstop2h 11m
Air Canada
Deal found 3/14![Air Canada logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 3/14. 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 4/3011:00 am
MDW
- YUL
1 stop5h 45m
Porter Airlines
Deal found 3/14![Porter Airlines logo]()
$100
This Delta deal was found by Cheapflights users on 3/12. 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.
Sun 4/59:35 am
MDW
- YUL
1 stop5h 18m
Delta
Deal found 3/12![Delta logo]()
$101
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 March 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $204 (Trip.com) |
One-way from | $91 (FlightHub) |
Popular in | December |
Cheapest in | September |
Average price | $261 |
Good round-trip deal | $196 or less |
Good one-way deal | $106 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 March 16, 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
Thu 5/14
3:20 pm-6:00 pm
Nonstop1h 40m
Toronto Island
Sun 5/17
8:50 am-9:40 am
Nonstop1h 50m
$229
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
Thu 4/2
11:00 am-1:42 pm
Nonstop1h 42m
Toronto Island
Sun 4/5
9:25 am-10:15 am
Nonstop1h 50m
$229
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
Thu 4/30
11:00 am-1:42 pm
Nonstop1h 42m
Toronto Island
Thu 5/7
1:45 pm-2:35 pm
Nonstop1h 50m
$240
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
Wed 4/15
7:30 am-8:03 pm
2 stops11h 33m
Toronto Island
Tue 4/21
9:25 am-10:15 am
Nonstop1h 50m
$243
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
Wed 4/29
11:00 am-1:42 pm
Nonstop1h 42m
Toronto Island
Wed 5/6
1:45 pm-2:35 pm
Nonstop1h 50m
$243
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
Sat 5/2
10:25 am-1:05 pm
Nonstop1h 40m
Toronto Island
Mon 5/4
8:50 am-9:40 am
Nonstop1h 50m
$243
ChicagoMontreal
ORD - YUL
ORDYUL
Chicago O'Hare Intl
Sat 4/18
6:00 am-1:09 pm
1 stop6h 09m
Montreal Pierre Elliott Trudeau Intl
Sat 4/25
6:10 am-8:00 am
Nonstop2h 50m
$246
ChicagoMontreal
ORD - YUL
ORDYUL
Chicago O'Hare Intl
Tue 4/28
8:45 am-2:40 pm
1 stop4h 55m
Montreal Pierre Elliott Trudeau Intl
Wed 4/29
6:10 am-8:00 am
Nonstop2h 50m
$246
ChicagoMontreal
ORD - YUL
ORDYUL
Chicago O'Hare Intl
Sun 5/17
6:00 am-1:09 pm
1 stop6h 09m
Montreal Pierre Elliott Trudeau Intl
Wed 5/20
5:00 pm-6:52 pm
Nonstop2h 52m
$246
ChicagoMontreal
ORD - YUL
ORDYUL
Chicago O'Hare Intl
Fri 5/15
12:55 pm-12:13 am
1 stop10h 18m
Montreal Pierre Elliott Trudeau Intl
Mon 5/18
6:10 am-8:00 am
Nonstop2h 50m
$246
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-YUL
MDW-YUL
MDW-YOW
ORD-YTZ
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-YUL
MDW-YUL
MDW-YOW
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 $78). Flying from Illinois to Region of Ontario in February is currently the most expensive (average of $189). 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 March 16, 2026.
It’s optimal to fly from Illinois to Region of Ontario in the morning. By choosing this option you can save up to 40% on the cost of your flight, compared to a flight at noon.
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 March 14, 2026.
Travelers seeking maximum savings on their Illinois to Region of Ontario flight should consider departing on Sunday 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.
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 March 16, 2026.
The most flights from USIL to CAON are scheduled on a Monday (65 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (55 on average).
How much does it cost to fly round-trip from Illinois to Region of Ontario?
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 March 16, 2026.
Read through reviews of airlines operating flights from Illinois to Ontario, such as Porter Airlines,Air Transat, 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
7.0
Crew
8.6
Overall
8.0
Boarding
8.2
Comfort
8.0
Food
7.6
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Entertainment
7.0
Crew
8.6
Overall
8.0
Boarding
8.2
Comfort
8.0
Food
7.6
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Entertainment
7.0
Crew
8.6
Overall
8.0
Boarding
8.2
Comfort
8.0
Food
7.6
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Entertainment
7.0
Crew
8.6
Overall
8.0
Boarding
8.2
Comfort
8.0
Food
7.6
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Entertainment
7.0
Crew
8.6
Overall
8.0
Boarding
8.2
Comfort
8.0
Food
7.6
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Entertainment
7.0
Crew
8.6
Overall
8.0
Boarding
8.2
Comfort
8.0
Food
7.6
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
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.
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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 March 16, 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 March 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$88 | Average$303 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$105 | Average$267 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$145 | Average$411 | 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$314 | FlexibilityNo cancel fee | On-time52% | |
| Cheapest$213 | Average$354 | FlexibilityNo cancel fee | On-time71% |