$80+ 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 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MKE
Jun 17 — Jun 241
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Wisconsin with Cheapflights
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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 May 18, 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 May 18, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/176:00 am
ONT
- MSP
1 stop13h 35m
Frontier
Wed 9/2310:30 pm
MSP
- ONT
1 stop14h 13m
Frontier
Deal found 5/14![Frontier logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/36:00 am
ONT
- MSP
1 stop25h 19m
Frontier
Fri 6/59:39 pm
MSP
- ONT
1 stop28h 10m
Frontier
Deal found 5/13![Frontier logo]()
$204
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/176:00 am
ONT
- MSP
1 stop13h 35m
Frontier
Mon 10/1910:30 pm
MSP
- ONT
1 stop14h 13m
Frontier
Deal found 5/14![Frontier logo]()
$205
This Expedia deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/236:00 am
ONT
- MSP
1 stop25h 23m
Frontier
Wed 7/110:15 pm
MSP
- ONT
1 stop13h 50m
Frontier
Deal found 5/13![Frontier logo]()
$230
This Mytrip deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/110:50 am
ONT
- MSP
1 stop20h 33m
Frontier
Wed 9/910:30 pm
MSP
- ONT
1 stop27h 25m
Frontier
Deal found 5/16![Frontier logo]()
$239
This CheapOair deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/168:07 am
ONT
- MSP
1 stop6h 55m
Frontier
Tue 9/2210:30 pm
MSP
- ONT
1 stop17h 27m
Frontier
Deal found 5/15![Frontier logo]()
$240
This Booking.com deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:00 am
ONT
- MSP
1 stop25h 21m
Frontier
Tue 8/1810:15 pm
MSP
- ONT
1 stop13h 50m
Frontier
Deal found 5/16![Frontier logo]()
$241
This Booking.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/76:00 am
ONT
- MSP
1 stop13h 27m
Frontier
Tue 7/2810:15 pm
MSP
- ONT
1 stop13h 48m
Frontier
Deal found 5/14![Frontier logo]()
$242
This Expedia deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/1110:49 am
ONT
- MSP
1 stop20h 32m
Frontier
Wed 7/1510:15 pm
MSP
- ONT
1 stop13h 48m
Frontier
Deal found 5/16![Frontier logo]()
$244
This Trip.com deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/76:00 am
ONT
- MSP
1 stop25h 21m
Frontier
Tue 7/1410:15 pm
MSP
- ONT
1 stop13h 48m
Frontier
Deal found 5/16![Frontier logo]()
$249
This Delta deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 9/227:00 am
ONT
- ORD
1 stop8h 22m
Delta
Mon 9/286:59 pm
ORD
- ONT
1 stop6h 45m
Delta
Deal found 5/17![Delta logo]()
$273
This Delta deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/311:52 am
ONT
- ORD
1 stop10h 03m
Delta
Sat 6/612:30 pm
ORD
- ONT
2 stops11h 18m
Delta
Deal found 5/13![Delta logo]()
$277
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 May 18, 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 May 18, 2026.
This United Airlines deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/161:18 pm
ONT
- ORD
1 stop7h 31m
United Airlines
Tue 6/306:00 am
ORD
- ONT
1 stop8h 47m
United Airlines
Deal found 5/17![United Airlines logo]()
$294
This Alaska Airlines deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/266:54 pm
ONT
- ORD
1 stop9h 26m
Alaska Airlines
Wed 10/289:00 am
ORD
- ONT
1 stop11h 00m
Alaska Airlines
Deal found 5/15![Alaska Airlines logo]()
$307
This Delta deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 6/2011:50 am
ONT
- GRB
1 stop9h 01m
Delta
Sat 7/46:55 am
GRB
- ONT
2 stops13h 35m
Delta
Deal found 5/17![Delta logo]()
$402
This American Airlines deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 6/511:59 pm
ONT
- ATW
2 stops8h 46m
American Airlines
Sat 6/61:56 pm
ATW
- ONT
1 stop10h 40m
American Airlines
Deal found 5/17![American Airlines logo]()
$419
This Southwest deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/256:50 am
ONT
- MKE
1 stop6h 05m
Southwest
Fri 8/285:45 am
MKE
- ONT
2 stops9h 40m
Southwest
Deal found 5/16![Southwest logo]()
$441
This United Airlines deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/97:00 am
ONT
- ORD
Nonstop4h 10m
United Airlines
Sat 9/195:30 pm
ORD
- ONT
Nonstop4h 27m
United Airlines
Deal found 5/16![United Airlines logo]()
$302
This United Airlines deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/66:05 am
ONT
- ORD
Nonstop4h 15m
United Airlines
Mon 6/88:18 pm
ORD
- ONT
Nonstop4h 33m
United Airlines
Deal found 5/13![United Airlines logo]()
$358
This Alaska Airlines deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 9/112:00 pm
ONT
- MSP
1 stop9h 59m
Alaska Airlines
Wed 9/27:02 am
MSP
- ONT
1 stop9h 07m
Alaska Airlines
Deal found 5/17![Alaska Airlines logo]()
$417
This Delta deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/307:05 am
ONT
- GRB
2 stops12h 53m
Delta
Wed 6/35:01 pm
GRB
- ONT
2 stops8h 33m
Delta
Deal found 5/15![Delta logo]()
$429
This Southwest deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/154:40 pm
ONT
- MKE
1 stop7h 15m
Southwest
Tue 6/166:25 am
MKE
- ONT
2 stops8h 30m
Southwest
Deal found 5/14![Southwest logo]()
$441
This American Airlines deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/2011:59 pm
ONT
- GRB
2 stops10h 30m
American Airlines
Sat 7/46:08 am
GRB
- ONT
2 stops9h 12m
American Airlines
Deal found 5/14![American Airlines logo]()
$450
This Alaska Airlines deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 9/112:00 pm
ONT
- MKE
1 stop9h 59m
Alaska Airlines
Wed 9/27:02 am
MKE
- ONT
1 stop9h 07m
Alaska Airlines
Deal found 5/17![Alaska Airlines logo]()
$427
This Delta deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/2610:00 pm
ONT
- MSN
2 stops11h 08m
Delta
Sat 5/306:30 am
MSN
- ONT
2 stops14h 06m
Delta
Deal found 5/13![Delta logo]()
$433
This Southwest deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2310:55 am
ONT
- MKE
2 stops8h 30m
Southwest
Fri 9/254:20 pm
MKE
- ONT
2 stops7h 45m
Southwest
Deal found 5/16![Southwest logo]()
$446
This United Airlines deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 8/125:00 am
ONT
- MSN
1 stop6h 13m
United Airlines
Sun 8/162:44 pm
MSN
- ONT
1 stop7h 13m
United Airlines
Deal found 5/17![United Airlines logo]()
$440
This Delta deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 8/611:56 am
ONT
- MKE
1 stop7h 13m
Delta
Sun 8/95:34 am
MKE
- ONT
1 stop7h 08m
Delta
Deal found 5/17![Delta logo]()
$449
This Southwest deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 10/2511:55 pm
ONT
- MKE
1 stop8h 40m
Southwest
Sat 10/312:00 pm
MKE
- ONT
2 stops8h 40m
Southwest
Deal found 5/17![Southwest logo]()
$454
This Alaska Airlines deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/512:04 pm
ONT
- MSP
1 stop9h 55m
Alaska Airlines
Wed 6/106:17 pm
MSP
- ONT
1 stop7h 34m
Alaska Airlines
Deal found 5/15![Alaska Airlines logo]()
$478
This Southwest deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 11/125:00 am
ONT
- MSP
2 stops7h 10m
Southwest
Sun 11/156:00 am
MSP
- ONT
1 stop5h 55m
Southwest
Deal found 5/17![Southwest logo]()
$457
This American Airlines deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/307:13 pm
ONT
- CWA
2 stops12h 12m
American Airlines
Sat 7/45:42 am
CWA
- ONT
2 stops9h 38m
American Airlines
Deal found 5/13![American Airlines logo]()
$567
This United Airlines deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 8/15:45 am
ONT
- ORD
1 stop9h 44m
United Airlines
Mon 8/108:18 pm
ORD
- ONT
Nonstop4h 33m
United Airlines
Deal found 5/17![United Airlines logo]()
$472
This Delta deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 7/910:00 pm
ONT
- ORD
2 stops13h 03m
Delta
Sun 7/127:45 am
ORD
- ONT
1 stop6h 25m
Delta
Deal found 5/17![Delta logo]()
$483
This Alaska Airlines deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2511:58 am
ONT
- MKE
1 stop10h 01m
Alaska Airlines
Sat 8/297:00 am
MKE
- ONT
1 stop9h 11m
Alaska Airlines
Deal found 5/13![Alaska Airlines logo]()
$486
This Southwest deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/145:15 am
ONT
- MKE
1 stop6h 05m
Southwest
Mon 6/156:35 pm
MKE
- ONT
2 stops7h 30m
Southwest
Deal found 5/14![Southwest logo]()
$471
This American Airlines deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/51:11 pm
ONT
- CWA
2 stops9h 05m
American Airlines
Tue 6/96:00 am
CWA
- ONT
2 stops9h 28m
American Airlines
Deal found 5/16![American Airlines logo]()
$571
This United Airlines deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/171:56 pm
ONT
- ORD
1 stop9h 03m
United Airlines
Fri 8/215:30 pm
ORD
- ONT
Nonstop4h 27m
United Airlines
Deal found 5/15![United Airlines logo]()
$472
This Delta deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/105:59 pm
ONT
- MSN
2 stops12h 23m
Delta
Mon 6/156:19 pm
MSN
- ONT
2 stops7h 30m
Delta
Deal found 5/17![Delta logo]()
$494
This Southwest deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/175:20 am
ONT
- MSP
2 stops6h 55m
Southwest
Mon 10/199:55 am
MSP
- ONT
2 stops7h 25m
Southwest
Deal found 5/14![Southwest logo]()
$472
This United Airlines deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 9/107:00 am
ONT
- ORD
Nonstop4h 10m
United Airlines
Mon 9/214:50 pm
ORD
- ONT
Nonstop4h 27m
United Airlines
Deal found 5/17![United Airlines logo]()
$477
This Alaska Airlines deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/312:06 pm
ONT
- MSP
1 stop9h 53m
Alaska Airlines
Fri 6/126:17 pm
MSP
- ONT
1 stop7h 34m
Alaska Airlines
Deal found 5/15![Alaska Airlines logo]()
$547
Last-minute flights from Ontario to WisconsinDiscover last-minute flight deals from Ontario to Wisconsin. Data last updated May 18, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Wisconsin. Data last updated May 18, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/276:00 am
ONT
- MSP
1 stop25h 19m
Frontier
Wed 6/310:14 am
MSP
- ONT
1 stop15h 35m
Frontier
Deal found 5/13![Frontier logo]()
$255
This Expedia deal was found by Cheapflights users on 5/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/210:50 am
ONT
- MSP
1 stop20h 29m
Frontier
Tue 6/910:15 pm
MSP
- ONT
1 stop13h 50m
Frontier
Deal found 5/18![Frontier logo]()
$250
This Super.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/210:50 am
ONT
- MSP
1 stop7h 54m
Frontier
Wed 6/1010:15 pm
MSP
- ONT
1 stop13h 50m
Frontier
Deal found 5/14![Frontier logo]()
$253
This Kiwi.com deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/36:00 am
ONT
- MSP
1 stop25h 19m
Frontier
Fri 6/59:39 pm
MSP
- ONT
1 stop28h 10m
Frontier
Deal found 5/13![Frontier logo]()
$204
This Booking.com deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/310:50 am
ONT
- MSP
1 stop20h 29m
Frontier
Sat 6/69:39 pm
MSP
- ONT
1 stop14h 26m
Frontier
Deal found 5/13![Frontier logo]()
$252
This Trip.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/36:00 am
ONT
- MSP
1 stop25h 19m
Frontier
Thu 6/49:39 pm
MSP
- ONT
1 stop14h 26m
Frontier
Deal found 5/14![Frontier logo]()
$258
This Delta deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/311:52 am
ONT
- ORD
1 stop10h 03m
Delta
Sat 6/612:30 pm
ORD
- ONT
2 stops11h 18m
Delta
Deal found 5/13![Delta logo]()
$277
This Gotogate deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/310:50 am
ONT
- ORD
1 stop7h 42m
Frontier
Tue 6/95:29 pm
ORD
- ONT
1 stop26h 23m
Frontier
Deal found 5/13![Frontier logo]()
$279
This Trip.com deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/56:00 am
ONT
- MSP
1 stop12h 44m
Frontier
Tue 6/910:18 am
MSP
- ONT
1 stop25h 47m
Frontier
Deal found 5/13![Frontier logo]()
$259
This Booking.com deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 6/96:00 am
ONT
- MSP
1 stop25h 23m
Frontier
Tue 6/1610:15 pm
MSP
- ONT
1 stop13h 50m
Frontier
Deal found 5/17![Frontier logo]()
$242
This CheapOair deal was found by Cheapflights users on 5/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/136:00 am
ONT
- MSP
1 stop13h 30m
Frontier
Tue 6/1610:15 pm
MSP
- ONT
1 stop13h 50m
Frontier
Deal found 5/16![Frontier logo]()
$244
This Expedia deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/236:00 am
ONT
- MSP
1 stop25h 23m
Frontier
Wed 7/110:15 pm
MSP
- ONT
1 stop13h 50m
Frontier
Deal found 5/13![Frontier logo]()
$230
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 May 18, 2026.
Search for one-way flight options from Ontario to Wisconsin. Find affordable one-way fares based on user searches. Data last updated May 18, 2026.
This Trip.com deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/126:00 am
ONT
- ORD
1 stop12h 52m
Frontier
Deal found 5/15![Frontier logo]()
$80
This Kiwi.com deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/213:40 pm
ONT
- ORD
1 stop11h 48m
Frontier
Deal found 5/13![Frontier logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/126:00 am
ONT
- MSP
1 stop13h 35m
Frontier
Deal found 5/14![Frontier logo]()
$103
This Kiwi.com deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/156:00 am
ONT
- MSP
1 stop25h 21m
Frontier
Deal found 5/13![Frontier logo]()
$110
This American Airlines deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/221:10 pm
ONT
- ORD
1 stop8h 20m
American Airlines
Deal found 5/13![American Airlines logo]()
$110
This Trip.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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 24m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$111
This Trip.com deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/36:00 am
ONT
- ORD
1 stop12h 32m
Frontier
Deal found 5/13![Frontier logo]()
$111
This Trip.com deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” 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 7/221:28 pm
ONT
- MSP
1 stop7h 50m
Multiple Airlines
Deal found 5/17![Multiple Airlines logo]()
$113
This Frontier deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/148:07 am
ONT
- MSP
1 stop6h 55m
Frontier
Deal found 5/14![Frontier logo]()
$115
This United Airlines deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/71:50 pm
ONT
- ORD
1 stop9h 09m
United Airlines
Deal found 5/15![United Airlines logo]()
$115
This Trip.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/710:49 am
ONT
- MSP
1 stop20h 32m
Frontier
Deal found 5/14![Frontier logo]()
$116
This Delta deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/37:05 am
ONT
- ORD
1 stop9h 36m
Delta
Deal found 5/13![Delta logo]()
$119
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 May 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $178 (Kiwi.com) |
One-way from | $80 (Trip.com) |
Popular in | February |
Cheapest in | August |
Average price | $400 |
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 May 18, 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 - ORD
ONTORD
Ontario
Tue 6/16
1:18 pm-10:49 pm
1 stop7h 31m
Chicago O'Hare Intl
Tue 6/30
6:00 am-12:47 pm
1 stop8h 47m
$294
Quickest round-trip
OntarioChicago
ONT - ORD
ONTORD
Ontario
Wed 9/9
7:00 am-1:10 pm
Nonstop4h 10m
Chicago O'Hare Intl
Sat 9/19
5:30 pm-7:57 pm
Nonstop4h 27m
$302
OntarioChicago
ONT - ORD
ONTORD
Ontario
Mon 10/26
6:54 pm-6:20 am
1 stop9h 26m
Chicago O'Hare Intl
Wed 10/28
9:00 am-6:00 pm
1 stop11h 00m
$307
OntarioChicago
ONT - ORD
ONTORD
Ontario
Sat 6/6
6:05 am-12:20 pm
Nonstop4h 15m
Chicago O'Hare Intl
Mon 6/8
8:18 pm-10:51 pm
Nonstop4h 33m
$358
OntarioGreen Bay
ONT - GRB
ONTGRB
Ontario
Sat 6/20
11:50 am-10:51 pm
1 stop9h 01m
Green Bay Austin-Straubel
Sat 7/4
6:55 am-6:30 pm
2 stops13h 35m
$402
OntarioMinneapolis
ONT - MSP
ONTMSP
Ontario
Tue 9/1
12:00 pm-11:59 pm
1 stop9h 59m
Minneapolis St Paul
Wed 9/2
7:02 am-2:09 pm
1 stop9h 07m
$417
OntarioAppleton
ONT - ATW
ONTATW
Ontario
Fri 6/5
11:59 pm-10:45 am
2 stops8h 46m
Appleton Intl
Sat 6/6
1:56 pm-10:36 pm
1 stop10h 40m
$419
OntarioMilwaukee
ONT - MKE
ONTMKE
Ontario
Tue 9/1
12:00 pm-11:59 pm
1 stop9h 59m
Milwaukee-Mitchell
Wed 9/2
7:02 am-2:09 pm
1 stop9h 07m
$427
OntarioGreen Bay
ONT - GRB
ONTGRB
Ontario
Sat 5/30
7:05 am-9:58 pm
2 stops12h 53m
Green Bay Austin-Straubel
Wed 6/3
5:01 pm-11:34 pm
2 stops8h 33m
$429
OntarioMadison
ONT - MSN
ONTMSN
Ontario
Tue 5/26
10:00 pm-11:08 am
2 stops11h 08m
Madison Truax Field
Sat 5/30
6:30 am-6:36 pm
2 stops14h 06m
$433
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-MSN
ONT-MKE
ONT-MSP
ONT-GRB
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-MSN
ONT-MKE
ONT-MSP
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 May 18, 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
Boarding
8.1
Entertainment
7.5
Crew
8.6
Comfort
8.0
Overall
7.9
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Food
7.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Comfort
8.0
Overall
7.9
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Food
7.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Comfort
8.0
Overall
7.9
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Food
7.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Comfort
8.0
Overall
7.9
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Food
7.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Comfort
8.0
Overall
7.9
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 May 18, 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 May 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$253 | Average$452 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$276 | Average$617 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$309 | Average$477 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$350 | Average$429 | FlexibilityNo cancel fee | On-time63% |