$73+ 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 6/7. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — YYZ
May 30 — Jun 61
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 April 30, 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 April 30, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” 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.
Sun 5/173:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Tue 5/191:45 pm
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 4/30![Porter Airlines logo]()
$210
This Mytrip deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” 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 5/289:55 am
ORD
- YYZ
Nonstop1h 40m
Air Canada
Sun 5/311:55 pm
YYZ
- ORD
Nonstop2h 00m
Air Canada
Deal found 4/30![Air Canada logo]()
$210
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/163:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sun 7/198:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 4/27![Porter Airlines logo]()
$213
This CAPO Viagens deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CAPO Viagens is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/47:25 am
ORD
- YTZ
Nonstop1h 41m
Air Canada
Sun 8/912:15 pm
YTZ
- ORD
Nonstop1h 55m
Air Canada
Deal found 4/26![Air Canada logo]()
$213
This Trip.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/153:20 pm
MDW
- YTZ
Nonstop1h 40m
Multiple Airlines
Mon 5/188:55 am
YTZ
- MDW
Nonstop1h 50m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$214
This Booking.com deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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 6/22:00 pm
ORD
- YTZ
Nonstop1h 41m
Air Canada
Tue 6/97:20 pm
YTZ
- ORD
Nonstop1h 56m
Air Canada
Deal found 4/29![Air Canada logo]()
$214
This FlipMilhas deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlipMilhas is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/59:55 am
ORD
- YYZ
Nonstop1h 40m
GOL
Sat 5/94:00 pm
YYZ
- ORD
Nonstop1h 59m
GOL
Deal found 4/28![GOL logo]()
$214
This Trip.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/153:20 pm
MDW
- YTZ
Nonstop1h 40m
Multiple Airlines
Tue 5/198:55 am
YTZ
- MDW
Nonstop1h 50m
Multiple Airlines
Deal found 4/25![Multiple Airlines logo]()
$215
This Mytrip deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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 5/279:55 am
ORD
- YYZ
Nonstop1h 40m
Air Canada
Wed 6/1012:25 pm
YYZ
- ORD
Nonstop2h 00m
Air Canada
Deal found 4/29![Air Canada logo]()
$215
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2710:30 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Fri 5/291:45 pm
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 4/27![Porter Airlines logo]()
$216
This FlightHub deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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 6/1910:25 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Mon 6/228:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 4/29![Porter Airlines logo]()
$217
This Mytrip deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 5/289:55 am
ORD
- YYZ
Nonstop1h 40m
Air Canada
Mon 6/11:55 pm
YYZ
- ORD
Nonstop2h 00m
Air Canada
Deal found 4/28![Air Canada logo]()
$217
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 April 30, 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 April 30, 2026.
This FlightHub deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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 6/193:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sun 6/218:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 4/29![Porter Airlines logo]()
$217
This United Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/1612:55 pm
ORD
- YYZ
Nonstop1h 51m
United Airlines
Tue 6/167:00 pm
YYZ
- ORD
1 stop5h 30m
United Airlines
Deal found 4/26![United Airlines logo]()
$226
This SmartFares deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/153:20 pm
MDW
- YTZ
Nonstop1h 40m
Air Transat
Mon 5/188:55 am
YTZ
- MDW
Nonstop1h 50m
Air Transat
Deal found 4/27![Air Transat logo]()
$243
This Delta deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/108:52 am
ORD
- YYZ
1 stop3h 42m
Delta
Wed 6/1712:09 pm
YYZ
- ORD
1 stop5h 17m
Delta
Deal found 4/26![Delta logo]()
$260
This Mytrip deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/92:00 pm
ORD
- YTZ
Nonstop1h 41m
Multiple Airlines
Tue 6/169:30 am
YTZ
- ORD
2 stops13h 50m
Multiple Airlines
Deal found 4/25![Multiple Airlines logo]()
$289
This FlightHub deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” 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 5/245:30 pm
ORD
- YHM
1 stop22h 45m
WestJet
Wed 5/276:10 pm
YHM
- ORD
1 stop23h 30m
WestJet
Deal found 4/30![WestJet logo]()
$431
This Kiwi.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 7/2210:25 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sun 7/268:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 4/28![Porter Airlines logo]()
$218
This American Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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.
Wed 5/206:35 am
STL
- YYZ
1 stop7h 08m
American Airlines
Wed 5/271:15 pm
YYZ
- STL
1 stop11h 39m
American Airlines
Deal found 4/29![American Airlines logo]()
$459
This United Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/144:37 pm
ORD
- YYZ
Nonstop2h 00m
United Airlines
Wed 6/247:00 am
YYZ
- ORD
Nonstop2h 00m
United Airlines
Deal found 4/26![United Airlines logo]()
$235
This FlightHub deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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 5/1510:30 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sun 5/241:45 pm
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 4/29![Porter Airlines logo]()
$219
This Air Canada deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/167:05 am
STL
- YYZ
Nonstop1h 51m
Air Canada
Fri 5/2211:00 am
YYZ
- STL
Nonstop2h 06m
Air Canada
Deal found 4/25![Air Canada logo]()
$504
This United Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 5/285:55 pm
ORD
- YYZ
Nonstop1h 49m
United Airlines
Sun 5/318:50 am
YYZ
- ORD
Nonstop2h 00m
United Airlines
Deal found 4/28![United Airlines logo]()
$235
This Delta deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/292:00 pm
ORD
- YYZ
1 stop7h 59m
Delta
Sun 5/3112:09 pm
YYZ
- ORD
1 stop6h 56m
Delta
Deal found 4/25![Delta logo]()
$260
This Kiwi.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2110:25 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sat 7/258:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 4/26![Porter Airlines logo]()
$220
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/237:00 am
ORD
- YYZ
1 stop7h 19m
Delta
Mon 5/259:49 am
YYZ
- ORD
1 stop7h 40m
Delta
Deal found 4/27![Delta logo]()
$260
This United Airlines deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” 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 6/27:09 am
ORD
- YYZ
Nonstop1h 45m
United Airlines
Fri 6/52:45 pm
YYZ
- ORD
Nonstop2h 05m
United Airlines
Deal found 4/30![United Airlines logo]()
$244
This Kiwi.com deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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 7/173:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sun 7/198:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 4/29![Porter Airlines logo]()
$223
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1112:27 pm
ORD
- YYZ
1 stop9h 47m
Delta
Thu 6/1812:09 pm
YYZ
- ORD
1 stop7h 20m
Delta
Deal found 4/27![Delta logo]()
$260
This United Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/125:00 am
ORD
- YYZ
1 stop7h 47m
United Airlines
Sat 5/168:50 am
YYZ
- ORD
Nonstop2h 00m
United Airlines
Deal found 4/25![United Airlines logo]()
$245
This Porter Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 6/410:15 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Mon 6/88:45 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 4/28![Porter Airlines logo]()
$235
This Delta deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/299:23 am
MDW
- YYZ
1 stop8h 08m
Delta
Sun 5/3112:09 pm
YYZ
- MDW
1 stop7h 24m
Delta
Deal found 4/26![Delta logo]()
$260
This United Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/129:15 pm
ORD
- YYZ
Nonstop1h 44m
United Airlines
Sun 6/147:00 am
YYZ
- ORD
Nonstop2h 00m
United Airlines
Deal found 4/29![United Airlines logo]()
$246
This FlightHub deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 7/73:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sat 7/118:50 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 4/28![Porter Airlines logo]()
$236
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/111:21 pm
MDW
- YYZ
1 stop8h 41m
Delta
Thu 6/186:05 am
YYZ
- MDW
1 stop4h 09m
Delta
Deal found 4/27![Delta logo]()
$260
This United Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 6/89:15 pm
ORD
- YYZ
Nonstop1h 44m
United Airlines
Tue 6/97:00 pm
YYZ
- ORD
1 stop5h 30m
United Airlines
Deal found 4/28![United Airlines logo]()
$251
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/269:22 am
MDW
- YYZ
1 stop6h 59m
Delta
Thu 5/284:04 pm
YYZ
- MDW
1 stop3h 29m
Delta
Deal found 4/27![Delta logo]()
$261
This FlightHub deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/265:30 pm
ORD
- YHM
1 stop22h 45m
WestJet
Thu 5/286:10 pm
YHM
- ORD
1 stop23h 30m
WestJet
Deal found 4/27![WestJet logo]()
$433
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/283:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Fri 5/291:45 pm
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 4/27![Porter Airlines logo]()
$245
This Delta deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 5/231:59 pm
MDW
- YYZ
1 stop8h 15m
Delta
Mon 5/256:10 am
YYZ
- MDW
1 stop7h 32m
Delta
Deal found 4/28![Delta logo]()
$261
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/289:22 am
MDW
- YYZ
1 stop6h 59m
Delta
Wed 6/36:10 am
YYZ
- MDW
1 stop7h 32m
Delta
Deal found 4/27![Delta logo]()
$261
Last-minute flights from Illinois to OntarioDiscover last-minute flight deals from Illinois to Ontario. Data last updated April 30, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Ontario. Data last updated April 30, 2026 and is based on user searches.
This FlipMilhas deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlipMilhas is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/59:55 am
ORD
- YYZ
Nonstop1h 40m
GOL
Sat 5/94:00 pm
YYZ
- ORD
Nonstop1h 59m
GOL
Deal found 4/28![GOL logo]()
$214
This FlightHub deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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 5/1310:30 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Wed 5/208:55 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 4/29![Porter Airlines logo]()
$217
This Trip.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/153:20 pm
MDW
- YTZ
Nonstop1h 40m
Multiple Airlines
Mon 5/188:55 am
YTZ
- MDW
Nonstop1h 50m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$214
This Trip.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/153:20 pm
MDW
- YTZ
Nonstop1h 40m
Multiple Airlines
Tue 5/198:55 am
YTZ
- MDW
Nonstop1h 50m
Multiple Airlines
Deal found 4/25![Multiple Airlines logo]()
$215
This FlightHub deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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 5/1510:30 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sun 5/241:45 pm
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 4/29![Porter Airlines logo]()
$219
This Justfly.com deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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.
Fri 5/1510:30 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sun 5/171:45 pm
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 4/29![Porter Airlines logo]()
$220
This Cheapflightsfares deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” 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.
Sun 5/173:20 pm
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Tue 5/191:45 pm
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 4/30![Porter Airlines logo]()
$210
This FlightHub deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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 5/2410:30 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Sat 5/308:55 am
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 4/29![Porter Airlines logo]()
$218
This Mytrip deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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 5/279:55 am
ORD
- YYZ
Nonstop1h 40m
Air Canada
Wed 6/1012:25 pm
YYZ
- ORD
Nonstop2h 00m
Air Canada
Deal found 4/29![Air Canada logo]()
$215
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2710:30 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Fri 5/291:45 pm
YTZ
- MDW
Nonstop1h 50m
Porter Airlines
Deal found 4/27![Porter Airlines logo]()
$216
This Mytrip deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” 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 5/289:55 am
ORD
- YYZ
Nonstop1h 40m
Air Canada
Sun 5/311:55 pm
YYZ
- ORD
Nonstop2h 00m
Air Canada
Deal found 4/30![Air Canada logo]()
$210
This Mytrip deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 5/289:55 am
ORD
- YYZ
Nonstop1h 40m
Air Canada
Mon 6/11:55 pm
YYZ
- ORD
Nonstop2h 00m
Air Canada
Deal found 4/28![Air Canada 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 April 30, 2026.
Search for one-way flight options from Illinois to Ontario. Find affordable one-way fares based on user searches. Data last updated April 30, 2026.
This Super.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/710:15 am
MDW
- YUL
1 stop6h 00m
Porter Airlines
Deal found 4/27![Porter Airlines logo]()
$73
This Porter Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/510:15 am
MDW
- YUL
1 stop6h 00m
Porter Airlines
Deal found 4/27![Porter Airlines logo]()
$90
This Air Canada deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 6/57:25 am
ORD
- YTZ
Nonstop1h 41m
Air Canada
Deal found 4/28![Air Canada logo]()
$91
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/168:50 am
ORD
- YYZ
Nonstop1h 59m
United Airlines
Deal found 4/27![United Airlines logo]()
$91
This Super.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com 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
Porter Airlines
Deal found 4/27![Porter Airlines logo]()
$92
This Kiwi.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 5/1210:30 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Deal found 4/28![Porter Airlines logo]()
$93
This Flightnetwork deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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.
Sun 6/77:25 am
ORD
- YTZ
Nonstop1h 41m
Air Canada
Deal found 4/28![Air Canada logo]()
$93
This SmartFares deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 5/153:20 pm
MDW
- YTZ
Nonstop1h 40m
Air Transat
Deal found 4/28![Air Transat logo]()
$94
This Booking.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com 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
Deal found 4/26![Air Canada logo]()
$94
This Kiwi.com deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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 5/1510:30 am
MDW
- YTZ
Nonstop1h 40m
Porter Airlines
Deal found 4/29![Porter Airlines logo]()
$95
This Air Canada deal was found by Cheapflights users on 4/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/102:00 pm
ORD
- YTZ
Nonstop1h 41m
Air Canada
Deal found 4/30![Air Canada logo]()
$95
This United Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” 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 5/277:09 am
ORD
- YYZ
Nonstop1h 45m
United Airlines
Deal found 4/29![United Airlines logo]()
$95
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 April 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $210 (Cheapflightsfares) |
One-way from | $73 (Super.com) |
Popular in | April |
Cheapest in | September |
Average price | $310 |
Good round-trip deal | $210 or less |
Good one-way deal | $97 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 April 30, 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
Fri 6/19
3:20 pm-6:00 pm
Nonstop1h 40m
Toronto Island
Sun 6/21
8:50 am-9:40 am
Nonstop1h 50m
$217
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
Wed 7/22
10:25 am-1:05 pm
Nonstop1h 40m
Toronto Island
Sun 7/26
8:50 am-9:40 am
Nonstop1h 50m
$218
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
Fri 5/15
10:30 am-1:10 pm
Nonstop1h 40m
Toronto Island
Sun 5/24
1:45 pm-2:35 pm
Nonstop1h 50m
$219
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
Tue 7/21
10:25 am-1:05 pm
Nonstop1h 40m
Toronto Island
Sat 7/25
8:50 am-9:40 am
Nonstop1h 50m
$220
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
Fri 7/17
3:20 pm-6:00 pm
Nonstop1h 40m
Toronto Island
Sun 7/19
8:50 am-9:40 am
Nonstop1h 50m
$223
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
Tue 6/16
12:55 pm-3:46 pm
Nonstop1h 51m
Toronto Pearson Intl
Tue 6/16
7:00 pm-11:30 pm
1 stop5h 30m
$226
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
Sun 6/14
4:37 pm-7:37 pm
Nonstop2h 00m
Toronto Pearson Intl
Wed 6/24
7:00 am-8:00 am
Nonstop2h 00m
$235
ChicagoToronto
ORD - YYZ
ORDYYZ
Chicago O'Hare Intl
Thu 5/28
5:55 pm-8:44 pm
Nonstop1h 49m
Toronto Pearson Intl
Sun 5/31
8:50 am-9:50 am
Nonstop2h 00m
$235
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
Thu 6/4
10:15 am-12:55 pm
Nonstop1h 40m
Toronto Island
Mon 6/8
8:45 am-9:35 am
Nonstop1h 50m
$235
ChicagoToronto
MDW - YTZ
MDWYTZ
Chicago Midway
Tue 7/7
3:20 pm-6:00 pm
Nonstop1h 40m
Toronto Island
Sat 7/11
8:50 am-9:40 am
Nonstop1h 50m
$236
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.
ORD-YYZ
MDW-YTZ
ORD-YTZ
ORD-YOW
STL-YUL
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
ORD-YYZ
MDW-YTZ
ORD-YTZ
ORD-YOW
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 85 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
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 $976). 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 April 30, 2026.
It’s optimal to fly from Illinois to Region of Ontario in the morning. By choosing this option you can save up to 29% 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 April 25, 2026.
Travelers seeking maximum savings on their Illinois to Region of Ontario flight should consider departing on Monday afternoons when fares are most often at their lowest. Sunday 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 April 30, 2026.
The most flights from USIL to CAON are scheduled on a Thursday (67 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (33 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 April 30, 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.
Food
7.6
Entertainment
7.0
Boarding
8.2
Comfort
8.0
Overall
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Food
7.6
Entertainment
7.0
Boarding
8.2
Comfort
8.0
Overall
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Food
7.6
Entertainment
7.0
Boarding
8.2
Comfort
8.0
Overall
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Food
7.6
Entertainment
7.0
Boarding
8.2
Comfort
8.0
Overall
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Food
7.6
Entertainment
7.0
Boarding
8.2
Comfort
8.0
Overall
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentJohn,Mar 2026
YYZ - PVR
Food
7.6
Entertainment
7.0
Boarding
8.2
Comfort
8.0
Overall
8.0
Crew
8.6
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.
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 April 30, 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 April 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$88 | Average$303 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$98 | Average$334 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$146 | Average$412 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$160 | Average$403 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$170 | Average$319 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$174 | Average$335 | FlexibilityNo cancel fee | On-time52% | |
| Cheapest$213 | Average$355 | FlexibilityNo cancel fee | On-time71% |