$73+ 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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MKE
Jul 4 — Jul 111
Round-trip
1 adult, Economy
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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 June 4, 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 June 4, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/2. 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.
Thu 8/2710:50 am
ONT
- MSP
1 stop8h 40m
Frontier
Tue 9/110:18 am
MSP
- ONT
1 stop15h 31m
Frontier
Deal found 6/2![Frontier logo]()
$212
This Kiwi.com deal was found by Cheapflights users on 6/2. 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.
Thu 8/2710:50 am
ONT
- MSP
1 stop8h 40m
Frontier
Mon 8/3110:15 pm
MSP
- ONT
1 stop13h 50m
Frontier
Deal found 6/2![Frontier logo]()
$223
This Kiwi.com deal was found by Cheapflights users on 6/2. 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.
Mon 8/36:00 am
ONT
- MSP
1 stop13h 27m
Frontier
Mon 8/1010:15 pm
MSP
- ONT
1 stop13h 49m
Frontier
Deal found 6/2![Frontier logo]()
$232
This Kiwi.com deal was found by Cheapflights users on 6/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/111:16 am
ONT
- MSP
1 stop7h 45m
Frontier
Wed 10/710:58 am
MSP
- ONT
1 stop14h 57m
Frontier
Deal found 6/3![Frontier logo]()
$247
This Kiwi.com deal was found by Cheapflights users on 6/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/510:50 am
ONT
- MSP
1 stop8h 40m
Frontier
Thu 10/110:58 am
MSP
- ONT
1 stop14h 57m
Frontier
Deal found 6/3![Frontier logo]()
$252
This Kiwi.com deal was found by Cheapflights users on 6/1. 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.
Wed 8/2610:50 am
ONT
- MSP
1 stop8h 40m
Frontier
Tue 9/110:15 pm
MSP
- ONT
1 stop13h 50m
Frontier
Deal found 6/1![Frontier logo]()
$255
This Kiwi.com deal was found by Cheapflights users on 6/2. 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.
Wed 8/2610:50 am
ONT
- MSP
1 stop8h 40m
Frontier
Wed 9/210:15 pm
MSP
- ONT
1 stop13h 50m
Frontier
Deal found 6/2![Frontier logo]()
$256
This Booking.com deal was found by Cheapflights users on 6/2. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/246:00 am
ONT
- MSP
1 stop25h 23m
Frontier
Tue 7/141:16 pm
MSP
- ONT
1 stop12h 34m
Frontier
Deal found 6/2![Frontier logo]()
$260
This Booking.com deal was found by Cheapflights users on 6/2. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/216:00 am
ONT
- MSP
1 stop28h 21m
Frontier
Tue 7/2810:15 pm
MSP
- ONT
1 stop27h 35m
Frontier
Deal found 6/2![Frontier logo]()
$266
This Booking.com deal was found by Cheapflights users on 5/31. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/1510:49 am
ONT
- MSP
1 stop23h 32m
Frontier
Wed 7/2210:15 pm
MSP
- ONT
1 stop13h 49m
Frontier
Deal found 5/31![Frontier logo]()
$272
This Delta deal was found by Cheapflights users on 5/31. 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.
Thu 8/1312:00 pm
ONT
- ORD
1 stop10h 02m
Delta
Mon 8/173:31 pm
ORD
- ONT
1 stop8h 21m
Delta
Deal found 5/31![Delta logo]()
$291
This United Airlines deal was found by Cheapflights users on 5/30. 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.
Wed 7/81:50 pm
ONT
- ORD
1 stop9h 09m
United Airlines
Tue 7/218:18 pm
ORD
- ONT
Nonstop4h 33m
United Airlines
Deal found 5/30![United Airlines logo]()
$293
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 June 4, 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 June 4, 2026.
This Delta deal was found by Cheapflights users on 6/1. 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 9/2611:59 am
ONT
- MSN
1 stop8h 40m
Delta
Sat 10/36:10 am
MSN
- ONT
2 stops13h 10m
Delta
Deal found 6/1![Delta logo]()
$336
This United Airlines deal was found by Cheapflights users on 5/30. 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.
Sun 6/285:45 am
ONT
- ORD
1 stop9h 37m
United Airlines
Tue 6/308:18 pm
ORD
- ONT
Nonstop4h 33m
United Airlines
Deal found 5/30![United Airlines logo]()
$388
This Alaska Airlines deal was found by Cheapflights users on 5/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/276:00 am
ONT
- MKE
1 stop8h 04m
Alaska Airlines
Wed 10/285:00 pm
MKE
- ONT
1 stop8h 42m
Alaska Airlines
Deal found 5/30![Alaska Airlines logo]()
$395
This Kiwi.com deal was found by Cheapflights users on 5/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/63:40 pm
ONT
- ATW
2 stops47h 04m
Multiple Airlines
Mon 7/207:00 am
ATW
- ONT
1 stop27h 03m
Multiple Airlines
Deal found 5/30![Multiple Airlines logo]()
$395
This Southwest deal was found by Cheapflights users on 6/3. 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 8/510:55 am
ONT
- MKE
2 stops8h 30m
Southwest
Tue 8/115:00 pm
MKE
- ONT
1 stop5h 55m
Southwest
Deal found 6/3![Southwest logo]()
$400
This American Airlines deal was found by Cheapflights users on 6/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/1911:59 pm
ONT
- MSN
1 stop8h 39m
American Airlines
Sun 6/216:46 am
MSN
- ONT
1 stop7h 03m
American Airlines
Deal found 6/2![American Airlines logo]()
$467
This Delta deal was found by Cheapflights users on 5/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2411:59 am
ONT
- GRB
1 stop8h 30m
Delta
Tue 10/67:00 am
GRB
- ONT
2 stops11h 12m
Delta
Deal found 5/30![Delta logo]()
$354
This Delta deal was found by Cheapflights users on 5/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1411:59 am
ONT
- ATW
1 stop8h 37m
Delta
Thu 9/2410:57 am
ATW
- ONT
2 stops13h 29m
Delta
Deal found 5/30![Delta logo]()
$354
This Alaska Airlines deal was found by Cheapflights users on 6/3. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/202:14 pm
ONT
- MSP
1 stop7h 45m
Alaska Airlines
Wed 10/215:49 pm
MSP
- ONT
1 stop8h 04m
Alaska Airlines
Deal found 6/3![Alaska Airlines logo]()
$397
This Southwest deal was found by Cheapflights users on 6/2. 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.
Thu 10/155:20 am
ONT
- MKE
1 stop5h 20m
Southwest
Mon 10/198:00 pm
MKE
- ONT
1 stop5h 40m
Southwest
Deal found 6/2![Southwest logo]()
$420
This United Airlines deal was found by Cheapflights users on 6/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/267:00 am
ONT
- ORD
Nonstop4h 10m
United Airlines
Mon 8/318:06 pm
ORD
- ONT
Nonstop4h 29m
United Airlines
Deal found 6/3![United Airlines logo]()
$434
This Southwest deal was found by Cheapflights users on 5/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/285:40 am
ONT
- MKE
1 stop5h 30m
Southwest
Thu 10/15:10 am
MKE
- ONT
2 stops11h 50m
Southwest
Deal found 5/30![Southwest logo]()
$430
This KAYAK deal was found by Cheapflights users on 6/2. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2012:35 pm
ONT
- MSP
1 stop9h 22m
American Airlines
Thu 7/236:02 am
MSP
- ONT
1 stop7h 43m
American Airlines
Deal found 6/2![American Airlines logo]()
$476
This Delta deal was found by Cheapflights users on 5/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/47:05 am
ONT
- CWA
2 stops12h 03m
Delta
Thu 8/134:24 pm
CWA
- ONT
2 stops9h 10m
Delta
Deal found 5/30![Delta logo]()
$394
This United Airlines deal was found by Cheapflights users on 5/30. 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.
Fri 8/281:56 pm
ONT
- MSP
2 stops8h 02m
United Airlines
Mon 8/315:45 am
MSP
- ONT
2 stops8h 27m
United Airlines
Deal found 5/30![United Airlines logo]()
$443
This Delta deal was found by Cheapflights users on 5/31. 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.
Tue 7/711:48 am
ONT
- MKE
1 stop10h 08m
Delta
Wed 7/157:00 am
MKE
- ONT
1 stop7h 10m
Delta
Deal found 5/31![Delta logo]()
$395
This Southwest deal was found by Cheapflights users on 5/31. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/224:10 pm
ONT
- MKE
1 stop6h 45m
Southwest
Mon 7/277:30 pm
MKE
- ONT
1 stop6h 05m
Southwest
Deal found 5/31![Southwest logo]()
$436
This United Airlines deal was found by Cheapflights users on 5/30. 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.
Thu 7/236:10 am
ONT
- ORD
Nonstop4h 15m
United Airlines
Tue 7/286:00 am
ORD
- ONT
1 stop8h 47m
United Airlines
Deal found 5/30![United Airlines logo]()
$448
This Alaska Airlines deal was found by Cheapflights users on 6/3. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/24:18 pm
ONT
- ORD
2 stops12h 02m
Alaska Airlines
Tue 8/46:00 am
ORD
- ONT
1 stop9h 09m
Alaska Airlines
Deal found 6/3![Alaska Airlines logo]()
$515
This American Airlines deal was found by Cheapflights users on 6/4. 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.
Wed 7/152:15 pm
ONT
- MSN
1 stop6h 38m
American Airlines
Mon 7/208:00 am
MSN
- ONT
1 stop6h 02m
American Airlines
Deal found 6/4![American Airlines logo]()
$532
This Delta deal was found by Cheapflights users on 5/31. 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.
Sun 9/612:00 pm
ONT
- MKE
1 stop9h 53m
Delta
Sat 9/127:15 am
MKE
- ONT
1 stop7h 14m
Delta
Deal found 5/31![Delta logo]()
$404
This Southwest deal was found by Cheapflights users on 6/1. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1811:55 pm
ONT
- MKE
1 stop8h 40m
Southwest
Mon 10/196:35 pm
MKE
- ONT
1 stop6h 00m
Southwest
Deal found 6/1![Southwest logo]()
$451
This United Airlines deal was found by Cheapflights users on 5/30. 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 11/106:53 pm
ONT
- GRB
2 stops13h 37m
United Airlines
Sat 11/143:44 pm
GRB
- ONT
1 stop8h 42m
United Airlines
Deal found 5/30![United Airlines logo]()
$454
This Alaska Airlines deal was found by Cheapflights users on 5/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/610:54 am
ONT
- ORD
1 stop16h 06m
Alaska Airlines
Sun 8/96:00 am
ORD
- ONT
2 stops11h 38m
Alaska Airlines
Deal found 5/30![Alaska Airlines logo]()
$523
This Southwest deal was found by Cheapflights users on 6/2. 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.
Thu 10/85:20 am
ONT
- MKE
1 stop5h 20m
Southwest
Mon 10/125:10 am
MKE
- ONT
2 stops11h 50m
Southwest
Deal found 6/2![Southwest logo]()
$452
This American Airlines deal was found by Cheapflights users on 6/1. 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.
Fri 8/712:59 pm
ONT
- CWA
2 stops8h 57m
American Airlines
Fri 8/149:54 am
CWA
- ONT
2 stops10h 21m
American Airlines
Deal found 6/1![American Airlines logo]()
$549
This United Airlines deal was found by Cheapflights users on 6/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/276:53 pm
ONT
- ATW
2 stops13h 06m
United Airlines
Sat 10/313:47 pm
ATW
- ONT
1 stop8h 39m
United Airlines
Deal found 6/3![United Airlines logo]()
$454
This United Airlines deal was found by Cheapflights users on 6/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/76:10 am
ONT
- ORD
Nonstop4h 15m
United Airlines
Mon 8/108:18 pm
ORD
- ONT
Nonstop4h 33m
United Airlines
Deal found 6/3![United Airlines logo]()
$454
This Delta deal was found by Cheapflights users on 6/2. 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.
Sun 8/3012:00 pm
ONT
- ORD
1 stop10h 02m
Delta
Fri 9/47:45 am
ORD
- ONT
1 stop6h 20m
Delta
Deal found 6/2![Delta logo]()
$457
This Alaska Airlines deal was found by Cheapflights users on 6/2. 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.
Mon 6/297:00 am
ONT
- MSP
1 stop6h 58m
Alaska Airlines
Sat 7/42:56 pm
MSP
- ONT
1 stop7h 40m
Alaska Airlines
Deal found 6/2![Alaska Airlines logo]()
$571
Last-minute flights from Ontario to WisconsinDiscover last-minute flight deals from Ontario to Wisconsin. Data last updated June 4, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Wisconsin. Data last updated June 4, 2026 and is based on user searches.
This Booking.com deal was found by Cheapflights users on 6/1. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/236:00 am
ONT
- MSP
1 stop13h 30m
Frontier
Tue 7/710:15 pm
MSP
- ONT
1 stop13h 49m
Frontier
Deal found 6/1![Frontier logo]()
$285
This Booking.com deal was found by Cheapflights users on 6/2. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/246:00 am
ONT
- MSP
1 stop25h 23m
Frontier
Tue 7/141:16 pm
MSP
- ONT
1 stop12h 34m
Frontier
Deal found 6/2![Frontier logo]()
$260
This Booking.com deal was found by Cheapflights users on 5/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/276:00 am
ONT
- MSP
1 stop25h 23m
Frontier
Tue 6/3010:18 am
MSP
- ONT
1 stop25h 47m
Frontier
Deal found 5/30![Frontier logo]()
$287
This Frontier deal was found by Cheapflights users on 6/1. 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.
Sat 7/410:50 am
ONT
- MSP
1 stop8h 40m
Frontier
Tue 7/141:16 pm
MSP
- ONT
1 stop12h 34m
Frontier
Deal found 6/1![Frontier logo]()
$278
This Expedia deal was found by Cheapflights users on 5/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/66:00 am
ONT
- MSP
1 stop13h 27m
Frontier
Wed 7/810:15 pm
MSP
- ONT
1 stop27h 35m
Frontier
Deal found 5/30![Frontier logo]()
$289
This United Airlines deal was found by Cheapflights users on 5/30. 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.
Wed 7/81:50 pm
ONT
- ORD
1 stop9h 09m
United Airlines
Tue 7/218:18 pm
ORD
- ONT
Nonstop4h 33m
United Airlines
Deal found 5/30![United Airlines logo]()
$293
This Frontier deal was found by Cheapflights users on 6/1. 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 7/910:49 am
ONT
- MSP
1 stop8h 38m
Frontier
Tue 7/141:16 pm
MSP
- ONT
1 stop12h 34m
Frontier
Deal found 6/1![Frontier logo]()
$283
This Booking.com deal was found by Cheapflights users on 6/2. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/106:00 am
ONT
- MSP
1 stop28h 21m
Frontier
Wed 7/1510:15 pm
MSP
- ONT
1 stop13h 49m
Frontier
Deal found 6/2![Frontier logo]()
$286
This Expedia deal was found by Cheapflights users on 5/31. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/146:00 am
ONT
- MSP
1 stop28h 21m
Frontier
Sun 7/1910:15 pm
MSP
- ONT
1 stop13h 49m
Frontier
Deal found 5/31![Frontier logo]()
$290
This Booking.com deal was found by Cheapflights users on 5/31. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/1510:49 am
ONT
- MSP
1 stop23h 32m
Frontier
Wed 7/2210:15 pm
MSP
- ONT
1 stop13h 49m
Frontier
Deal found 5/31![Frontier logo]()
$272
This Booking.com deal was found by Cheapflights users on 6/2. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/216:00 am
ONT
- MSP
1 stop28h 21m
Frontier
Tue 7/2810:15 pm
MSP
- ONT
1 stop27h 35m
Frontier
Deal found 6/2![Frontier logo]()
$266
This CheapOair deal was found by Cheapflights users on 5/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/296:00 am
ONT
- MSP
1 stop28h 21m
Frontier
Tue 8/410:15 pm
MSP
- ONT
1 stop13h 49m
Frontier
Deal found 5/30![Frontier logo]()
$280
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 June 4, 2026.
Search for one-way flight options from Ontario to Wisconsin. Find affordable one-way fares based on user searches. Data last updated June 4, 2026.
This Trip.com deal was found by Cheapflights users on 6/3. 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 8/56:00 am
ONT
- MSP
1 stop13h 27m
Frontier
Deal found 6/3![Frontier logo]()
$73
This Trip.com deal was found by Cheapflights users on 6/3. 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 8/51:38 pm
ONT
- ORD
1 stop13h 59m
Frontier
Deal found 6/3![Frontier logo]()
$73
This Trip.com deal was found by Cheapflights users on 6/3. 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.
Thu 8/64:34 pm
ONT
- ORD
1 stop11h 03m
Frontier
Deal found 6/3![Frontier logo]()
$76
This Trip.com deal was found by Cheapflights users on 6/1. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/186:00 am
ONT
- MSP
1 stop25h 23m
Frontier
Deal found 6/1![Frontier logo]()
$91
This Trip.com deal was found by Cheapflights users on 5/31. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/256:00 am
ONT
- MSP
1 stop25h 23m
Frontier
Deal found 5/31![Frontier logo]()
$96
This Trip.com deal was found by Cheapflights users on 6/3. 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 7/296:00 am
ONT
- ORD
1 stop12h 52m
Frontier
Deal found 6/3![Frontier logo]()
$98
This Trip.com deal was found by Cheapflights users on 6/3. 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.
Tue 8/256:00 am
ONT
- ORD
1 stop12h 53m
Frontier
Deal found 6/3![Frontier logo]()
$100
This Trip.com deal was found by Cheapflights users on 6/3. 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.
Tue 7/283:40 pm
ONT
- ORD
1 stop11h 57m
Frontier
Deal found 6/3![Frontier logo]()
$102
This Trip.com deal was found by Cheapflights users on 6/3. 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 7/83:40 pm
ONT
- ORD
1 stop11h 57m
Frontier
Deal found 6/3![Frontier logo]()
$103
This Kiwi.com deal was found by Cheapflights users on 6/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/216:00 am
ONT
- ORD
1 stop12h 52m
Frontier
Deal found 6/3![Frontier logo]()
$104
This Trip.com deal was found by Cheapflights users on 6/3. 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.
Sat 8/86:00 am
ONT
- MSP
1 stop13h 17m
Frontier
Deal found 6/3![Frontier logo]()
$105
This Trip.com deal was found by Cheapflights users on 6/3. 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 7/153:40 pm
ONT
- ORD
1 stop11h 57m
Frontier
Deal found 6/3![Frontier logo]()
$105
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 June 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $212 (Kiwi.com) |
One-way from | $73 (Trip.com) |
Popular in | February |
Cheapest in | August |
Average price | $429 |
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 June 4, 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
OntarioMadison
ONT - MSN
ONTMSN
Ontario
Sat 9/26
11:59 am-10:39 pm
1 stop8h 40m
Madison Truax Field
Sat 10/3
6:10 am-5:20 pm
2 stops13h 10m
$336
OntarioGreen Bay
ONT - GRB
ONTGRB
Ontario
Thu 9/24
11:59 am-10:29 pm
1 stop8h 30m
Green Bay Austin-Straubel
Tue 10/6
7:00 am-4:12 pm
2 stops11h 12m
$354
OntarioAppleton
ONT - ATW
ONTATW
Ontario
Mon 9/14
11:59 am-10:36 pm
1 stop8h 37m
Appleton Intl
Thu 9/24
10:57 am-10:26 pm
2 stops13h 29m
$354
OntarioChicago
ONT - ORD
ONTORD
Ontario
Sun 6/28
5:45 am-5:22 pm
1 stop9h 37m
Chicago O'Hare Intl
Tue 6/30
8:18 pm-10:51 pm
Nonstop4h 33m
$388
OntarioWausau
ONT - CWA
ONTCWA
Ontario
Sat 7/4
7:05 am-9:08 pm
2 stops12h 03m
Wausau Central Wisconsin
Thu 8/13
4:24 pm-11:34 pm
2 stops9h 10m
$394
OntarioMilwaukee
ONT - MKE
ONTMKE
Ontario
Tue 10/27
6:00 am-4:04 pm
1 stop8h 04m
Milwaukee-Mitchell
Wed 10/28
5:00 pm-11:42 pm
1 stop8h 42m
$395
OntarioAppleton
ONT - ATW
ONTATW
Ontario
Mon 7/6
3:40 pm-4:44 pm
2 stops47h 04m
Appleton Intl
Mon 7/20
7:00 am-8:03 am
1 stop27h 03m
$395
OntarioMilwaukee
ONT - MKE
ONTMKE
Ontario
Tue 7/7
11:48 am-11:56 pm
1 stop10h 08m
Milwaukee-Mitchell
Wed 7/15
7:00 am-12:10 pm
1 stop7h 10m
$395
OntarioMinneapolis
ONT - MSP
ONTMSP
Ontario
Tue 10/20
2:14 pm-11:59 pm
1 stop7h 45m
Minneapolis St Paul
Wed 10/21
5:49 pm-11:53 pm
1 stop8h 04m
$397
OntarioMilwaukee
ONT - MKE
ONTMKE
Ontario
Wed 8/5
10:55 am-9:25 pm
2 stops8h 30m
Milwaukee-Mitchell
Tue 8/11
5:00 pm-8:55 pm
1 stop5h 55m
$400
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-MSP
ONT-ORD
ONT-ATW
ONT-MSN
ONT-MKE
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-MSP
ONT-ORD
ONT-ATW
ONT-MSN
What is the cheapest month to book a flight from Ontario to Wisconsin?
Currently, July is the cheapest month in which you can book a flight from Ontario to Wisconsin (average of $122). Flying from Ontario to Wisconsin in February is currently the most expensive (average of $369). 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.
How much does it cost to fly round-trip from Ontario to Wisconsin?
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 June 4, 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.
Food
7.0
Entertainment
7.5
Boarding
8.1
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Food
7.0
Entertainment
7.5
Boarding
8.1
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Food
7.0
Entertainment
7.5
Boarding
8.1
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Food
7.0
Entertainment
7.5
Boarding
8.1
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Food
7.0
Entertainment
7.5
Boarding
8.1
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
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 June 4, 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 June 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$276 | Average$630 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$288 | Average$486 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$350 | Average$459 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$356 | Average$476 | FlexibilityNo cancel fee | On-timeN/A |