$95+ Cheap flights from Chicago (CHI) to Ontario
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/27. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — YYZ
Nov 22 — Nov 291
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Chicago to Ontario with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Chicago to Ontario
Cheapest
Best
Last-minute
One-way
Cheapest flights from Chicago to OntarioExplore the most affordable flight options available from Chicago to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 23, 2026.
Explore the most affordable flight options available from Chicago to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 23, 2026.
This Super.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1112:15 pm -
Nonstop1h 45m
Sat 11/144:35 pm -
Nonstop2h 05m
Deal found 10/20![Porter Airlines logo]()
$211
This Gotogate deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/181:55 pm -
Nonstop1h 47m
Fri 11/209:50 am -
1 stop6h 10m
Deal found 10/21![Air Canada logo]()
$217
This Super.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:20 pm -
Nonstop1h 45m
Sun 11/154:35 pm -
Nonstop2h 05m
Deal found 10/21![Porter Airlines logo]()
$218
This FlightHub deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/36:20 pm -
Nonstop1h 45m
Wed 12/910:30 am -
Nonstop2h 05m
Deal found 10/21![Porter Airlines logo]()
$219
This Mytrip deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/38:45 am -
Nonstop1h 42m
Sun 12/66:55 pm -
Nonstop2h 03m
Deal found 10/21![Air Canada logo]()
$219
This Kiwi.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1212:15 pm -
Nonstop1h 45m
Mon 11/164:35 pm -
Nonstop2h 05m
Deal found 10/21![Porter Airlines logo]()
$220
This Trip.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/116:20 pm -
Nonstop1h 45m
Thu 11/2610:30 am -
Nonstop2h 05m
Deal found 10/21![Porter Airlines logo]()
$221
This Kiwi.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/106:20 pm -
Nonstop1h 45m
Sun 11/1510:30 am -
Nonstop2h 05m
Deal found 10/20![Porter Airlines logo]()
$224
This Trip.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/36:20 pm -
Nonstop1h 45m
Sun 12/610:30 am -
Nonstop2h 05m
Deal found 10/20![Porter Airlines logo]()
$225
This Justfly.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/186:20 pm -
Nonstop1h 45m
Sun 11/224:35 pm -
Nonstop2h 05m
Deal found 10/21![Porter Airlines logo]()
$226
This Mytrip deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1310:15 am -
Nonstop1h 37m
Mon 11/164:30 pm -
Nonstop2h 13m
Deal found 10/23![Air Canada logo]()
$234
This Mytrip deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/912:50 pm -
Nonstop1h 43m
Thu 12/106:55 pm -
Nonstop2h 03m
Deal found 10/22![Air Canada logo]()
$238
Best flights from Chicago to OntarioDiscover carefully curated flight deals from Chicago to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 23, 2026.
Discover carefully curated flight deals from Chicago to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 23, 2026.
This Air Canada deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/42:00 pm -
Nonstop1h 41m
Sun 3/76:45 am -
1 stop5h 22m
Deal found 10/23![Air Canada logo]()
$274
This Porter Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1712:15 pm -
Nonstop1h 45m
Fri 11/204:35 pm -
Nonstop2h 05m
Deal found 10/20![Porter Airlines logo]()
$286
This Delta deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/257:05 am -
1 stop5h 25m
Sun 11/2912:15 pm -
1 stop7h 15m
Deal found 10/22![Delta logo]()
$303
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/227:00 am -
1 stop5h 43m
Tue 1/52:43 pm -
1 stop6h 25m
Deal found 10/22![United Airlines logo]()
$324
This Kiwi.com deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/810:46 am -
1 stop12h 09m
Sat 4/177:00 am -
1 stop27h 56m
Deal found 10/19![Multiple Airlines logo]()
$353
This Delta deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/181:41 pm -
1 stop8h 26m
Mon 1/46:00 am -
1 stop7h 33m
Deal found 10/22![Delta logo]()
$303
This Porter Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/166:20 pm -
Nonstop1h 45m
Wed 11/2510:30 am -
Nonstop2h 05m
Deal found 10/20![Porter Airlines logo]()
$310
This Delta deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/41:00 pm -
1 stop5h 07m
Sun 3/76:00 am -
1 stop3h 45m
Deal found 10/22![Delta logo]()
$303
This Porter Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/166:20 pm -
Nonstop1h 45m
Mon 11/2310:30 am -
Nonstop2h 05m
Deal found 10/20![Porter Airlines logo]()
$310
This Air Canada deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/307:05 am -
2 stops10h 14m
Fri 12/48:55 pm -
2 stops18h 57m
Deal found 10/20![Air Canada logo]()
$357
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/103:00 pm -
1 stop7h 52m
Thu 11/128:35 am -
Nonstop2h 09m
Deal found 10/21![United Airlines logo]()
$364
This Delta deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/246:15 pm -
1 stop3h 44m
Mon 1/46:00 am -
1 stop7h 33m
Deal found 10/22![Delta logo]()
$303
This Porter Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2112:15 pm -
Nonstop1h 45m
Mon 11/234:35 pm -
Nonstop2h 05m
Deal found 10/20![Porter Airlines logo]()
$310
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1110:39 am -
1 stop6h 10m
Sun 11/156:45 am -
Nonstop2h 09m
Deal found 10/22![United Airlines logo]()
$365
This United deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/245:55 am -
1 stop12h 02m
Thu 11/268:20 am -
2 stops7h 42m
Deal found 10/22![Multiple Airlines logo]()
$411
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/139:30 am -
1 stop3h 00m
Tue 11/2412:15 pm -
1 stop6h 49m
Deal found 10/23![Delta logo]()
$324
This Kiwi.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/46:20 pm -
1 stop12h 39m
Sun 1/103:25 pm -
1 stop24h 38m
Deal found 10/22![Multiple Airlines logo]()
$418
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/251:30 pm -
1 stop4h 31m
Sun 11/298:35 am -
Nonstop2h 09m
Deal found 10/22![United Airlines logo]()
$382
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/79:30 am -
1 stop5h 34m
Sun 1/106:00 am -
1 stop3h 45m
Deal found 10/23![Delta logo]()
$324
This Porter Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/36:20 pm -
Nonstop1h 45m
Sun 11/154:35 pm -
Nonstop2h 05m
Deal found 10/20![Porter Airlines logo]()
$364
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/188:50 pm -
Nonstop1h 42m
Wed 12/3012:00 pm -
Nonstop2h 13m
Deal found 10/22![United Airlines logo]()
$396
This Mytrip deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/147:15 am -
2 stops28h 35m
Mon 11/167:35 am -
2 stops11h 12m
Deal found 10/19![Multiple Airlines logo]()
$436
This Delta deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/142:44 pm -
1 stop7h 13m
Mon 11/169:45 am -
1 stop7h 33m
Deal found 10/20![Delta logo]()
$334
This oojo deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1410:34 am -
2 stops36h 06m
Mon 11/165:30 am -
2 stops13h 34m
Deal found 10/20![WestJet logo]()
$1,117
This Porter Airlines deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Porter Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/306:20 pm -
Nonstop1h 45m
Fri 12/410:30 am -
Nonstop2h 05m
Deal found 10/18![Porter Airlines logo]()
$394
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/37:02 am -
Nonstop1h 45m
Sun 12/65:55 pm -
Nonstop2h 10m
Deal found 10/21![United Airlines logo]()
$401
This Delta deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/239:30 am -
1 stop4h 44m
Sun 1/106:00 am -
1 stop3h 45m
Deal found 10/19![Delta logo]()
$334
This Mytrip deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/35:02 pm -
2 stops15h 37m
Mon 12/77:10 pm -
2 stops17h 23m
Deal found 10/20![Multiple Airlines logo]()
$471
This Delta deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/132:44 pm -
1 stop7h 13m
Sun 11/1512:15 pm -
1 stop7h 15m
Deal found 10/20![Delta logo]()
$335
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/121:55 pm -
Nonstop1h 47m
Mon 11/1612:05 pm -
Nonstop2h 15m
Deal found 10/21![United Airlines logo]()
$420
Last-minute flights from Chicago to OntarioDiscover last-minute flight deals from Chicago to Ontario. Data last updated October 23, 2026 and is based on user searches.
Discover last-minute flight deals from Chicago to Ontario. Data last updated October 23, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/106:20 pm -
Nonstop1h 45m
Sun 11/1510:30 am -
Nonstop2h 05m
Deal found 10/20![Porter Airlines logo]()
$224
This Super.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1112:15 pm -
Nonstop1h 45m
Sat 11/144:35 pm -
Nonstop2h 05m
Deal found 10/20![Porter Airlines logo]()
$211
This Trip.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/116:20 pm -
Nonstop1h 45m
Thu 11/2610:30 am -
Nonstop2h 05m
Deal found 10/21![Porter Airlines logo]()
$221
This Super.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:20 pm -
Nonstop1h 45m
Sun 11/154:35 pm -
Nonstop2h 05m
Deal found 10/21![Porter Airlines logo]()
$218
This Kiwi.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1212:15 pm -
Nonstop1h 45m
Mon 11/164:35 pm -
Nonstop2h 05m
Deal found 10/21![Porter Airlines logo]()
$220
This Booking.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/128:45 am -
Nonstop1h 42m
Mon 11/164:30 pm -
Nonstop2h 13m
Deal found 10/22![Air Canada logo]()
$236
This Mytrip deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1310:15 am -
Nonstop1h 37m
Mon 11/164:30 pm -
Nonstop2h 13m
Deal found 10/23![Air Canada logo]()
$234
This Kiwi.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/146:20 pm -
Nonstop1h 45m
Sun 11/1510:30 am -
Nonstop2h 05m
Deal found 10/20![Porter Airlines logo]()
$219
This Air Canada deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/168:40 pm -
Nonstop1h 43m
Wed 11/256:20 am -
1 stop5h 47m
Deal found 10/21![Air Canada logo]()
$247
This Gotogate deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/181:55 pm -
Nonstop1h 47m
Fri 11/209:50 am -
1 stop6h 10m
Deal found 10/21![Air Canada logo]()
$217
This Justfly.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/186:20 pm -
Nonstop1h 45m
Sun 11/224:35 pm -
Nonstop2h 05m
Deal found 10/21![Porter Airlines logo]()
$226
This Air Canada deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/277:05 am -
1 stop5h 41m
Wed 12/27:00 am -
1 stop5h 07m
Deal found 10/22![Air Canada logo]()
$256
One-way flights from Chicago to OntarioSearch for one-way flight options from Chicago to Ontario. Find affordable one-way fares based on user searches. Data last updated October 23, 2026.
Search for one-way flight options from Chicago to Ontario. Find affordable one-way fares based on user searches. Data last updated October 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/276:20 pm -
Nonstop1h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Porter Airlines logo]()
$95
This Kiwi.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/3112:15 pm -
Nonstop1h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Porter Airlines logo]()
$96
This Trip.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/712:15 pm -
Nonstop1h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Porter Airlines logo]()
$97
This Jetabroad deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/1512:15 pm -
Nonstop1h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Porter Airlines logo]()
$99
This Super.com deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/126:20 pm -
Nonstop1h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Porter Airlines logo]()
$100
This Booking.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/171:55 pm -
Nonstop1h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Air Canada logo]()
$102
This Air Canada deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/271:55 pm -
1 stop5h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Air Canada logo]()
$102
This Kiwi.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/306:20 pm -
Nonstop1h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Porter Airlines logo]()
$103
This Kiwi.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/166:00 am -
1 stop12h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Multiple Airlines logo]()
$104
This Trip.com deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1812:15 pm -
Nonstop1h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Porter Airlines logo]()
$105
This Mytrip deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/258:45 am -
Nonstop1h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Air Canada logo]()
$105
This Air Canada deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/161:55 pm -
Nonstop1h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Air Canada logo]()
$106
Find flight deals from Chicago to Ontario
Keep the following information in mind while searching for Chicago to Ontario flight deals. Data was last updated October 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $211 (Super.com) |
One-way from | $95 (Kiwi.com) |
Popular in | October |
Cheapest in | January |
Average price | $333 |
Good round-trip deal | $267 or less |
Good one-way deal | $95 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Chicago to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 23, 2026.
Use the filters below to find and compare flights from Chicago to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
ChicagoToronto
ORD Chicago O'Hare Intl - YTZ Toronto Island
ORDYTZ
Chicago O'Hare Intl
Fri 11/27
6:20 pm-9:05 pm
Nonstop1h 45m
Toronto Island
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$110
ChicagoToronto
ORD Chicago O'Hare Intl - YTZ Toronto Island
ORDYTZ
Chicago O'Hare Intl
Sun 12/6
7:05 am-2:21 pm
1 stop6h 16m
Toronto Island
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$111
ChicagoToronto
ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl
ORDYYZ
Chicago O'Hare Intl
Sat 1/2
6:54 am-9:47 am
Nonstop1h 53m
Toronto Pearson Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$113
ChicagoToronto
ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl
ORDYYZ
Chicago O'Hare Intl
Mon 12/14
10:57 am-5:49 pm
1 stop5h 52m
Toronto Pearson Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$122
ChicagoToronto
ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl
ORDYYZ
Chicago O'Hare Intl
Thu 12/3
2:30 pm-11:26 pm
1 stop7h 56m
Toronto Pearson Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$122
ChicagoToronto
ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl
ORDYYZ
Chicago O'Hare Intl
Sun 1/3
3:45 pm-6:45 pm
Nonstop2h 00m
Toronto Pearson Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$123
ChicagoToronto
MDW Chicago Midway - YTZ Toronto Island
MDWYTZ
Chicago Midway
Mon 11/16
6:08 am-12:50 pm
2 stops29h 42m
Toronto Island
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$132
ChicagoToronto
MDW Chicago Midway - YYZ Toronto Pearson Intl
MDWYYZ
Chicago Midway
Tue 1/5
1:00 pm-7:07 pm
1 stop5h 07m
Toronto Pearson Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$133
ChicagoToronto
MDW Chicago Midway - YYZ Toronto Pearson Intl
MDWYYZ
Chicago Midway
Fri 1/1
6:15 pm-10:59 pm
1 stop3h 44m
Toronto Pearson Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$133
ChicagoToronto
ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl
ORDYYZ
Chicago O'Hare Intl
Fri 1/1
10:30 am-5:49 pm
1 stop6h 19m
Toronto Pearson Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$133
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Chicago to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Chicago with our price prediction graph.
ORD-YTZ
ORD-YYZ
RFD-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 Chicago to Ontario
CHI-CAON
ORD-YTZ
ORD-YYZ
RFD-YYZ
MDW-YYZ
What is the cheapest month to book a flight from Chicago to Region of Ontario?
Currently, February is the cheapest month in which you can book a flight from Chicago to Region of Ontario (average of $295). Flying from Chicago to Region of Ontario in August is currently the most expensive (average of $366). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from CHI to ON?
Find hourly flight availability from Chicago to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 23, 2026.
It’s optimal to fly from Chicago to Region of Ontario in the evening. By choosing this option you can save up to 31% on the cost of your flight, compared to a flight at noon.
Weekly flight availability from Chicago to Region of Ontario
Explore weekly flight availability from Chicago to Ontario. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated October 23, 2026.
The most flights from CHI to CAON are scheduled on a Wednesday (67 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (12 on average).
How much does it cost to fly round-trip from Chicago to Region of Ontario?
Airfare is below average for this route at the moment.
Chicago to Region of Ontario flights typically cost between $244 and $425 in December.The cheapest round-trip price found within the last 5 days was $219 on Air Canada (Dec 3-Dec 6).
How far ahead should I book a flight from Chicago to Region of Ontario?
Booking 71 days in advance of your planned departure date is, on average, the best time to get cheap flights from Chicago to Region of Ontario. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest day to fly from Chicago to Region of Ontario?
Use this chart to determine the cheapest time to fly round-trip from Chicago to Ontario. Price data was last updated on October 17, 2026.
Travelers seeking maximum savings on their Chicago to Region of Ontario flight should consider departing on Saturday mornings when fares are most often at their lowest. Sunday 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 October 23, 2026.
See what other customers who have flown with Porter Airlines,Delta, andUnited Airlines from Chicago to Ontario have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Boarding
8.2
Overall
8.0
Food
7.6
Crew
8.6
Entertainment
6.9
Reviews
1 / 20
6.0
GoodShannon,Jul 2026
YQT - YOW
Comfort
8.0
Boarding
8.2
Overall
8.0
Food
7.6
Crew
8.6
Entertainment
6.9
Reviews
1 / 20
6.0
GoodShannon,Jul 2026
YQT - YOW
Comfort
8.0
Boarding
8.2
Overall
8.0
Food
7.6
Crew
8.6
Entertainment
6.9
Reviews
1 / 20
6.0
GoodShannon,Jul 2026
YQT - YOW
Comfort
8.0
Boarding
8.2
Overall
8.0
Food
7.6
Crew
8.6
Entertainment
6.9
Reviews
1 / 20
6.0
GoodShannon,Jul 2026
YQT - YOW
Comfort
8.0
Boarding
8.2
Overall
8.0
Food
7.6
Crew
8.6
Entertainment
6.9
Reviews
1 / 20
6.0
GoodShannon,Jul 2026
YQT - YOW
Comfort
8.0
Boarding
8.2
Overall
8.0
Food
7.6
Crew
8.6
Entertainment
6.9
Reviews
1 / 20
6.0
GoodShannon,Jul 2026
YQT - YOW
Related info for your journey
Find useful and relevant information for your journey from Chicago to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Top destinations
Alternative routes for Chicago to Ontario
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Chicago to Ontario by cabin class
Find flights from Chicago to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Chicago and Ontario flights
Browse other Chicago and Ontario flight options. Last updated on October 23, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Chicago to Ontario flights
Consider these flights traveling from Chicago to Ontario.
Top 6 airlines flying from Chicago to Ontario
Discover the top 6 airlines that operate flights from Chicago to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$88 | Average$387 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$160 | Average$403 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$177 | Average$504 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$193 | Average$353 | FlexibilityNo cancel fee | On-time52% | |
| Cheapest$222 | Average$578 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$223 | Average$390 | FlexibilityNo cancel fee | On-time71% |