$88+ Cheap flights from Ontario (ONT) to Wisconsin
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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MKE
Sep 4 — Sep 111
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Wisconsin 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
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Cheapest flights from Ontario to WisconsinExplore the most affordable flight options available from Ontario to Wisconsin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 5, 2026.
Explore the most affordable flight options available from Ontario to Wisconsin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/155:31 pm -
1 stop22h 30m
Wed 9/302:33 pm -
1 stop11h 14m
Deal found 8/1![Frontier logo]()
$214
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1111:45 am -
1 stop23h 53m
Mon 9/146:56 pm -
1 stop23h 50m
Deal found 8/4![Frontier logo]()
$236
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 10/98:54 pm -
2 stops10h 04m
Mon 10/1210:30 pm -
1 stop14h 13m
Deal found 7/31![Frontier logo]()
$237
This Frontier deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/206:15 am -
1 stop11h 00m
Thu 10/18:00 pm -
1 stop5h 47m
Deal found 8/4![Frontier logo]()
$240
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 10/132:58 pm -
2 stops16h 00m
Fri 10/1610:30 pm -
1 stop27h 25m
Deal found 8/1![Frontier logo]()
$247
This CheapOair deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1311:45 am -
1 stop5h 30m
Sun 9/208:00 pm -
1 stop16h 30m
Deal found 8/4![Frontier logo]()
$250
This Frontier deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:00 am -
1 stop11h 10m
Sun 9/67:55 pm -
1 stop5h 55m
Deal found 8/1![Frontier logo]()
$252
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3111:50 am -
1 stop5h 47m
Fri 9/49:57 pm -
1 stop27h 53m
Deal found 8/1![Frontier logo]()
$255
This Frontier deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:00 am -
1 stop11h 10m
Thu 9/178:00 pm -
1 stop5h 47m
Deal found 8/3![Frontier logo]()
$259
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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 10/65:31 pm -
1 stop22h 30m
Tue 10/205:57 pm -
1 stop15h 15m
Deal found 8/2![Frontier logo]()
$265
This Expedia deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:00 am -
1 stop11h 10m
Sun 8/237:55 pm -
1 stop16h 09m
Deal found 8/1![Frontier logo]()
$265
This FlightHub deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 9/33:40 pm -
1 stop25h 22m
Mon 9/78:11 pm -
1 stop21h 38m
Deal found 8/4![Frontier logo]()
$272
Best flights from Ontario to WisconsinDiscover carefully curated flight deals from Ontario to Wisconsin that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 5, 2026.
Discover carefully curated flight deals from Ontario to Wisconsin that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 5, 2026.
This Delta deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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.
Mon 8/316:20 am -
1 stop8h 40m
Sat 9/52:30 pm -
2 stops9h 53m
Deal found 7/31![Delta logo]()
$279
This United Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 11/145:00 am -
1 stop6h 14m
Mon 11/164:15 pm -
Nonstop4h 32m
Deal found 8/1![United Airlines logo]()
$279
This Frontier deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/148:00 am -
1 stop9h 08m
Fri 9/182:33 pm -
1 stop11h 14m
Deal found 7/31![Frontier logo]()
$288
This Southwest deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/98:35 am -
2 stops8h 00m
Tue 9/152:05 pm -
1 stop6h 55m
Deal found 8/3![Southwest logo]()
$352
This Alaska Airlines deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/67:12 am -
1 stop7h 11m
Fri 9/115:21 pm -
1 stop8h 03m
Deal found 8/2![Alaska Airlines logo]()
$369
This American Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:11 pm -
2 stops12h 24m
Tue 10/69:58 am -
2 stops10h 45m
Deal found 7/31![American Airlines logo]()
$406
This Delta deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/297:05 am -
1 stop7h 09m
Wed 9/162:55 pm -
1 stop7h 29m
Deal found 8/2![Delta logo]()
$347
This United Airlines deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/297:00 am -
Nonstop4h 10m
Sat 9/58:06 pm -
Nonstop4h 29m
Deal found 8/2![United Airlines logo]()
$356
This Southwest deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/711:55 pm -
1 stop9h 10m
Sat 9/266:30 am -
2 stops9h 45m
Deal found 8/2![Southwest logo]()
$358
This Alaska Airlines deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/67:12 am -
1 stop7h 11m
Thu 9/105:21 pm -
1 stop8h 03m
Deal found 8/2![Alaska Airlines logo]()
$371
This Delta deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 9/1212:17 pm -
1 stop8h 07m
Tue 9/155:30 am -
1 stop7h 35m
Deal found 8/3![Delta logo]()
$359
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 9/11:18 pm -
1 stop6h 11m
Sat 9/58:06 pm -
Nonstop4h 29m
Deal found 7/31![United Airlines logo]()
$364
This KAYAK deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/312:27 pm -
1 stop6h 25m
Wed 9/26:00 am -
1 stop9h 31m
Deal found 8/5![American Airlines logo]()
$407
This Alaska Airlines deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/912:12 pm -
1 stop9h 47m
Fri 9/112:54 pm -
1 stop10h 30m
Deal found 8/2![Alaska Airlines logo]()
$371
This Southwest deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/91:30 pm -
1 stop8h 35m
Mon 10/128:00 pm -
1 stop5h 45m
Deal found 8/4![Southwest logo]()
$387
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 12/251:42 pm -
1 stop8h 16m
Sat 1/24:00 pm -
Nonstop4h 44m
Deal found 8/4![United Airlines logo]()
$372
This Delta deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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 8/197:05 am -
1 stop7h 08m
Sat 8/2212:47 pm -
1 stop7h 43m
Deal found 8/2![Delta logo]()
$379
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/291:18 pm -
1 stop6h 12m
Tue 9/18:06 pm -
Nonstop4h 29m
Deal found 7/31![United Airlines logo]()
$379
This Delta deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 11/141:25 pm -
1 stop6h 30m
Fri 11/275:30 am -
1 stop7h 40m
Deal found 8/1![Delta logo]()
$382
This Southwest deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/155:45 am -
2 stops8h 05m
Wed 9/303:05 pm -
2 stops7h 55m
Deal found 8/2![Southwest logo]()
$433
This American Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/312:59 pm -
2 stops9h 11m
Mon 9/77:00 am -
1 stop6h 43m
Deal found 8/1![American Airlines logo]()
$489
This United Airlines deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” 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 10/101:52 pm -
1 stop7h 06m
Sat 10/178:20 pm -
Nonstop4h 29m
Deal found 8/5![United Airlines logo]()
$379
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 9/112:00 pm -
1 stop8h 44m
Sun 9/65:31 am -
1 stop7h 11m
Deal found 8/4![Delta logo]()
$389
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 11/137:00 am -
1 stop5h 58m
Mon 11/162:35 pm -
2 stops10h 13m
Deal found 8/4![United Airlines logo]()
$387
This Delta deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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.
Mon 8/317:05 am -
1 stop7h 09m
Tue 9/812:45 pm -
1 stop9h 39m
Deal found 8/1![Delta logo]()
$390
This American Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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.
Tue 9/112:59 pm -
2 stops8h 57m
Wed 9/95:05 pm -
2 stops27h 08m
Deal found 8/4![American Airlines logo]()
$549
This Delta deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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.
Mon 8/1712:00 pm -
1 stop8h 44m
Thu 8/275:31 am -
1 stop7h 11m
Deal found 7/31![Delta logo]()
$394
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 9/97:00 am -
Nonstop4h 10m
Wed 9/168:33 pm -
Nonstop4h 26m
Deal found 8/4![United Airlines logo]()
$396
This American Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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.
Fri 9/412:59 pm -
2 stops8h 57m
Wed 9/95:05 pm -
2 stops27h 08m
Deal found 8/4![American Airlines logo]()
$549
This Delta deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1512:00 pm -
1 stop8h 44m
Wed 8/265:31 am -
1 stop7h 11m
Deal found 7/31![Delta logo]()
$394
Last-minute flights from Ontario to WisconsinDiscover last-minute flight deals from Ontario to Wisconsin. Data last updated August 5, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Wisconsin. Data last updated August 5, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:00 am -
1 stop11h 10m
Thu 9/178:00 pm -
1 stop5h 47m
Deal found 8/3![Frontier logo]()
$259
This Super.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 8/193:40 pm -
1 stop25h 22m
Tue 9/12:41 pm -
1 stop11h 09m
Deal found 8/3![Frontier logo]()
$276
This Expedia deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:00 am -
1 stop11h 10m
Sun 8/237:55 pm -
1 stop16h 09m
Deal found 8/1![Frontier logo]()
$265
This Frontier deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/239:33 am -
1 stop13h 16m
Sat 8/292:41 pm -
1 stop11h 09m
Deal found 8/3![Frontier logo]()
$274
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 8/293:40 pm -
2 stops16h 53m
Sat 9/52:01 pm -
1 stop11h 49m
Deal found 8/1![Frontier logo]()
$276
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3111:50 am -
1 stop5h 47m
Fri 9/49:57 pm -
1 stop27h 53m
Deal found 8/1![Frontier logo]()
$255
This Frontier deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:00 am -
1 stop11h 10m
Sun 9/67:55 pm -
1 stop5h 55m
Deal found 8/1![Frontier logo]()
$252
This FlightHub deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 9/33:40 pm -
1 stop25h 22m
Mon 9/78:11 pm -
1 stop21h 38m
Deal found 8/4![Frontier logo]()
$272
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1111:45 am -
1 stop23h 53m
Mon 9/146:56 pm -
1 stop23h 50m
Deal found 8/4![Frontier logo]()
$236
This CheapOair deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1311:45 am -
1 stop5h 30m
Sun 9/208:00 pm -
1 stop16h 30m
Deal found 8/4![Frontier logo]()
$250
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/155:31 pm -
1 stop22h 30m
Wed 9/302:33 pm -
1 stop11h 14m
Deal found 8/1![Frontier logo]()
$214
This Frontier deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/206:15 am -
1 stop11h 00m
Thu 10/18:00 pm -
1 stop5h 47m
Deal found 8/4![Frontier logo]()
$240
One-way flights from Ontario to WisconsinSearch for one-way flight options from Ontario to Wisconsin. Find affordable one-way fares based on user searches. Data last updated August 5, 2026.
Search for one-way flight options from Ontario to Wisconsin. Find affordable one-way fares based on user searches. Data last updated August 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 9/57:56 pm -
1 stop23h 06m
Deal found 7/31![Frontier logo]()
$88
This Super.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/259:37 am -
1 stop8h 38m
Deal found 7/31![Frontier logo]()
$94
This Frontier deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/19:37 am -
1 stop8h 38m
Deal found 8/1![Frontier logo]()
$95
This Super.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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.
Mon 8/319:33 am -
1 stop13h 16m
Deal found 8/1![Frontier logo]()
$99
This Frontier deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/295:44 pm -
1 stop9h 54m
Deal found 8/1![Frontier logo]()
$101
This Frontier deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/202:58 pm -
1 stop12h 44m
Deal found 8/4![Frontier logo]()
$102
This Trip.com deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/711:50 am -
1 stop28h 31m
Deal found 8/5![Frontier logo]()
$104
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 9/57:56 pm -
1 stop15h 40m
Deal found 8/4![Frontier logo]()
$105
This Super.com deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/189:37 am -
1 stop8h 38m
Deal found 8/5![Frontier logo]()
$117
This Frontier deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3010:49 am -
1 stop6h 21m
Deal found 8/1![Frontier logo]()
$120
This Super.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 9/188:24 pm -
1 stop7h 14m
Deal found 8/3![Frontier logo]()
$120
This Trip.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 9/27:56 pm -
1 stop21h 14m
Deal found 8/3![Frontier logo]()
$121
Find flight deals from Ontario to Wisconsin
Keep the following information in mind while searching for Ontario to Wisconsin flight deals. Data was last updated August 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $214 (Kiwi.com) |
One-way from | $88 (Kiwi.com) |
Popular in | June |
Cheapest in | August |
Average price | $288 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Wisconsin 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 August 5, 2026.
Use the filters below to find and compare flights from Ontario to Wisconsin that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioChicago
ONT Ontario - ORD Chicago O'Hare Intl
ONTORD
Ontario
Mon 8/31
6:20 am-5:00 pm
1 stop8h 40m
Chicago O'Hare Intl
Sat 9/5
2:30 pm-10:23 pm
2 stops9h 53m
$279
OntarioChicago
ONT Ontario - ORD Chicago O'Hare Intl
ONTORD
Ontario
Sat 11/14
5:00 am-1:14 pm
1 stop6h 14m
Chicago O'Hare Intl
Mon 11/16
4:15 pm-6:47 pm
Nonstop4h 32m
$279
OntarioMinneapolis
ONT Ontario - MSP Minneapolis St Paul
ONTMSP
Ontario
Mon 9/14
8:00 am-7:08 pm
1 stop9h 08m
Minneapolis St Paul
Fri 9/18
2:33 pm-11:47 pm
1 stop11h 14m
$288
OntarioMilwaukee
ONT Ontario - MKE Milwaukee-Mitchell
ONTMKE
Ontario
Sat 8/29
7:05 am-4:14 pm
1 stop7h 09m
Milwaukee-Mitchell
Wed 9/16
2:55 pm-8:24 pm
1 stop7h 29m
$347
OntarioMilwaukee
ONT Ontario - MKE Milwaukee-Mitchell
ONTMKE
Ontario
Wed 9/9
8:35 am-6:35 pm
2 stops8h 00m
Milwaukee-Mitchell
Tue 9/15
2:05 pm-7:00 pm
1 stop6h 55m
$352
OntarioChicago
ONT Ontario - ORD Chicago O'Hare Intl
ONTORD
Ontario
Sat 8/29
7:00 am-1:10 pm
Nonstop4h 10m
Chicago O'Hare Intl
Sat 9/5
8:06 pm-10:35 pm
Nonstop4h 29m
$356
OntarioMilwaukee
ONT Ontario - MKE Milwaukee-Mitchell
ONTMKE
Ontario
Mon 9/7
11:55 pm-11:05 am
1 stop9h 10m
Milwaukee-Mitchell
Sat 9/26
6:30 am-2:15 pm
2 stops9h 45m
$358
OntarioGreen Bay
ONT Ontario - GRB Green Bay Austin-Straubel
ONTGRB
Ontario
Sat 9/12
12:17 pm-10:24 pm
1 stop8h 07m
Green Bay Austin-Straubel
Tue 9/15
5:30 am-11:05 am
1 stop7h 35m
$359
OntarioChicago
ONT Ontario - ORD Chicago O'Hare Intl
ONTORD
Ontario
Tue 9/1
1:18 pm-9:29 pm
1 stop6h 11m
Chicago O'Hare Intl
Sat 9/5
8:06 pm-10:35 pm
Nonstop4h 29m
$364
OntarioMinneapolis
ONT Ontario - MSP Minneapolis St Paul
ONTMSP
Ontario
Sun 9/6
7:12 am-4:23 pm
1 stop7h 11m
Minneapolis St Paul
Fri 9/11
5:21 pm-11:24 pm
1 stop8h 03m
$369
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Ontario to Wisconsin
Have a flexible travel schedule? Discover the best time to fly to Wisconsin from Ontario with our price prediction graph.
ONT-ORD
ONT-MSP
ONT-MKE
ONT-GRB
ONT-MSN
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 Ontario to Wisconsin
ONT-USWI
ONT-ORD
ONT-MSP
ONT-MKE
ONT-GRB
What is the cheapest month to book a flight from Ontario to Wisconsin?
Currently, September is the cheapest month in which you can book a flight from Ontario to Wisconsin (average of $366). Flying from Ontario to Wisconsin in July is currently the most expensive (average of $717). 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.
Reviews of airlines servicing Wisconsin
Get insights into the airlines that provide service to Wisconsin. 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 Wisconsin. Reviews last updated August 5, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines from Ontario to Wisconsin. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Boarding
8.1
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Related info for your journey
Find useful and relevant information for your journey from Ontario to Wisconsin. 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 Ontario to Wisconsin
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Complete your trip
Complete your trip to Wisconsin by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Wisconsin by cabin class
Find flights from Ontario to Wisconsin, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Wisconsin flights
Browse other Ontario and Wisconsin flight options. Last updated on August 5, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Ontario to Wisconsin flights
Consider these flights traveling from Ontario to Wisconsin.
Top 4 airlines flying from Ontario to Wisconsin
Discover the top 4 airlines that operate flights from Ontario to Wisconsin. 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 August 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$230 | Average$481 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$276 | Average$539 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$288 | Average$503 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$350 | Average$493 | FlexibilityNo cancel fee | On-time63% |