$204+ Cheap flights from Milwaukee (MKE) to Ontario
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/23. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — YYZ
Jul 4 — Jul 111
Round-trip
1 adult, Economy
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Cheapest flights from Milwaukee to OntarioExplore the most affordable flight options available from Milwaukee to Ontario. 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 Milwaukee to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 4, 2026.
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.
Tue 9/111:32 am
MKE
- YUL
1 stop4h 21m
American Airlines
Tue 9/157:29 am
YUL
- MKE
1 stop13h 39m
American Airlines
Deal found 6/1![American Airlines logo]()
$464
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.
Sat 7/46:00 am
MKE
- YUL
1 stop8h 19m
American Airlines
Sat 7/117:51 am
YUL
- MKE
1 stop5h 31m
American Airlines
Deal found 6/2![American Airlines logo]()
$472
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.
Mon 9/148:14 pm
MKE
- YYZ
1 stop13h 45m
American Airlines
Mon 9/217:15 pm
YYZ
- MKE
1 stop13h 46m
American Airlines
Deal found 6/4![American Airlines logo]()
$477
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 7/16:20 am
MKE
- YUL
1 stop10h 10m
United Airlines
Wed 7/86:10 am
YUL
- MKE
1 stop4h 43m
United Airlines
Deal found 6/3![United Airlines logo]()
$482
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.
Wed 7/296:00 am
MKE
- YUL
1 stop5h 29m
American Airlines
Thu 8/135:34 pm
YUL
- MKE
1 stop15h 10m
American Airlines
Deal found 6/1![American Airlines logo]()
$484
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/241:18 pm
MKE
- YYZ
1 stop9h 08m
American Airlines
Mon 9/286:30 am
YYZ
- MKE
1 stop7h 18m
American Airlines
Deal found 6/3![American Airlines logo]()
$487
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 7/11:30 pm
MKE
- YUL
1 stop8h 29m
American Airlines
Fri 7/312:30 pm
YUL
- MKE
1 stop6h 48m
American Airlines
Deal found 6/4![American Airlines logo]()
$503
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/257:00 am
MKE
- YUL
1 stop14h 59m
American Airlines
Tue 6/307:29 am
YUL
- MKE
1 stop17h 30m
American Airlines
Deal found 6/3![American Airlines logo]()
$504
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/81:30 pm
MKE
- YOW
1 stop7h 05m
United Airlines
Wed 8/125:57 pm
YOW
- MKE
1 stop6h 40m
United Airlines
Deal found 6/1![United Airlines logo]()
$505
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 7/37:01 am
MKE
- YUL
1 stop14h 55m
American Airlines
Sun 7/121:05 pm
YUL
- MKE
1 stop11h 39m
American Airlines
Deal found 6/1![American Airlines logo]()
$505
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/41:15 pm
MKE
- YYZ
1 stop9h 14m
American Airlines
Wed 8/127:15 pm
YYZ
- MKE
1 stop13h 29m
American Airlines
Deal found 5/31![American Airlines logo]()
$518
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.
Mon 7/138:38 am
MKE
- YUL
1 stop7h 09m
American Airlines
Thu 7/1612:30 pm
YUL
- MKE
1 stop9h 01m
American Airlines
Deal found 6/4![American Airlines logo]()
$520
Best flights from Milwaukee to OntarioDiscover carefully curated flight deals from Milwaukee to Ontario 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 Milwaukee to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 4, 2026.
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/316:00 am
MKE
- YUL
1 stop6h 51m
United Airlines
Tue 11/34:45 pm
YUL
- MKE
1 stop6h 54m
United Airlines
Deal found 6/2![United Airlines logo]()
$482
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 7/138:38 am
MKE
- YUL
1 stop7h 09m
American Airlines
Wed 7/151:05 pm
YUL
- MKE
1 stop11h 39m
American Airlines
Deal found 6/2![American Airlines logo]()
$504
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/86:25 pm
MKE
- YUL
1 stop3h 45m
Delta
Mon 10/126:00 am
YUL
- MKE
1 stop7h 27m
Delta
Deal found 6/3![Delta logo]()
$568
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 7/15:00 am
MKE
- YUL
1 stop11h 30m
United Airlines
Wed 7/89:15 am
YUL
- MKE
2 stops8h 27m
United Airlines
Deal found 6/3![United Airlines logo]()
$492
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.
Tue 7/141:40 pm
MKE
- YUL
1 stop8h 16m
American Airlines
Thu 7/1612:30 pm
YUL
- MKE
1 stop20h 32m
American Airlines
Deal found 6/2![American Airlines logo]()
$504
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/277:20 am
MKE
- YXU
2 stops13h 17m
Air Canada
Wed 7/110:05 am
YXU
- MKE
2 stops13h 24m
Air Canada
Deal found 6/3![Air Canada logo]()
$1,083
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.
Sat 8/86:14 am
MKE
- YOW
1 stop9h 24m
United Airlines
Wed 8/125:57 pm
YOW
- MKE
1 stop6h 40m
United Airlines
Deal found 5/30![United Airlines logo]()
$505
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/65:00 pm
MKE
- YUL
1 stop5h 10m
Delta
Sun 11/86:00 am
YUL
- MKE
1 stop7h 27m
Delta
Deal found 6/3![Delta logo]()
$568
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 7/36:21 pm
MKE
- YUL
1 stop18h 28m
American Airlines
Sun 7/57:50 am
YUL
- MKE
1 stop16h 54m
American Airlines
Deal found 6/1![American Airlines logo]()
$553
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.
Fri 7/246:45 am
MKE
- YYZ
1 stop15h 33m
Delta
Fri 9/116:00 am
YYZ
- MKE
1 stop15h 09m
Delta
Deal found 6/1![Delta logo]()
$585
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/3110:45 am
MKE
- YYZ
1 stop4h 43m
United Airlines
Wed 11/43:00 pm
YYZ
- MKE
1 stop9h 27m
United Airlines
Deal found 6/2![United Airlines logo]()
$544
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/166:20 am
MKE
- YXU
2 stops7h 32m
Multiple Airlines
Thu 7/239:10 pm
YXU
- MKE
3 stops14h 01m
Multiple Airlines
Deal found 6/1![Multiple Airlines logo]()
$1,320
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.
Tue 8/258:20 am
MKE
- YYZ
1 stop5h 13m
American Airlines
Mon 8/318:00 am
YYZ
- MKE
1 stop5h 23m
American Airlines
Deal found 6/4![American Airlines logo]()
$565
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 7/1410:44 am
MKE
- YYZ
1 stop9h 48m
United Airlines
Fri 7/178:45 am
YYZ
- MKE
1 stop5h 03m
United Airlines
Deal found 6/3![United Airlines logo]()
$565
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:00 am
MKE
- YYZ
1 stop4h 59m
American Airlines
Sat 8/291:15 pm
YYZ
- MKE
1 stop8h 45m
American Airlines
Deal found 5/31![American Airlines logo]()
$608
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.
Mon 7/67:23 pm
MKE
- YYZ
1 stop3h 36m
United Airlines
Wed 7/810:15 am
YYZ
- MKE
1 stop5h 21m
United Airlines
Deal found 6/3![United Airlines logo]()
$565
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/26:08 am
MKE
- YYZ
1 stop7h 26m
American Airlines
Sun 7/121:16 pm
YYZ
- MKE
1 stop10h 07m
American Airlines
Deal found 5/30![American Airlines logo]()
$608
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 8/185:17 pm
MKE
- YYZ
1 stop5h 56m
United Airlines
Thu 8/207:00 am
YYZ
- MKE
1 stop4h 00m
United Airlines
Deal found 6/3![United Airlines logo]()
$565
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/26:00 am
MKE
- YYZ
1 stop14h 40m
American Airlines
Mon 7/61:17 pm
YYZ
- MKE
1 stop8h 44m
American Airlines
Deal found 5/31![American Airlines logo]()
$608
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/118:50 am
MKE
- YYZ
2 stops9h 12m
United Airlines
Wed 7/152:45 pm
YYZ
- MKE
1 stop5h 41m
United Airlines
Deal found 6/4![United Airlines logo]()
$597
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.
Thu 10/88:16 pm
MKE
- YUL
1 stop19h 09m
American Airlines
Tue 10/137:30 am
YUL
- MKE
1 stop17h 41m
American Airlines
Deal found 6/4![American Airlines logo]()
$609
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/166:20 am
MKE
- YOW
1 stop6h 39m
United Airlines
Sun 7/196:25 am
YOW
- MKE
1 stop4h 28m
United Airlines
Deal found 5/31![United Airlines logo]()
$600
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/267:20 am
MKE
- YOW
1 stop13h 15m
United Airlines
Fri 7/35:20 pm
YOW
- MKE
1 stop14h 40m
United Airlines
Deal found 6/2![United Airlines logo]()
$604
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/296:09 am
MKE
- YOW
1 stop9h 29m
United Airlines
Mon 7/64:00 pm
YOW
- MKE
2 stops16h 00m
United Airlines
Deal found 6/1![United Airlines logo]()
$605
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/25:00 am
MKE
- YUL
1 stop4h 40m
United Airlines
Tue 7/76:00 am
YUL
- MKE
1 stop5h 11m
United Airlines
Deal found 6/4![United Airlines logo]()
$614
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/98:50 am
MKE
- YXU
2 stops10h 42m
Multiple Airlines
Sun 7/129:10 pm
YXU
- MKE
3 stops14h 01m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$1,688
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/165:00 am
MKE
- YXU
2 stops14h 32m
United Airlines
Thu 7/2310:05 am
YXU
- MKE
2 stops10h 21m
United Airlines
Deal found 6/1![United Airlines logo]()
$997
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.
Sat 10/316:00 am
MKE
- YXU
2 stops8h 06m
United Airlines
Wed 11/45:45 am
YXU
- MKE
2 stops11h 50m
United Airlines
Deal found 5/30![United Airlines logo]()
$997
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/276:20 am
MKE
- YXU
2 stops14h 17m
United Airlines
Wed 7/13:30 pm
YXU
- MKE
2 stops6h 26m
United Airlines
Deal found 5/31![United Airlines logo]()
$1,022
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/97:50 am
MKE
- YXU
2 stops11h 42m
United Airlines
Sun 7/129:10 pm
YXU
- MKE
2 stops22h 38m
United Airlines
Deal found 6/4![United Airlines logo]()
$1,065
Last-minute flights from Milwaukee to OntarioDiscover last-minute flight deals from Milwaukee to Ontario. Data last updated June 4, 2026 and is based on user searches.
Discover last-minute flight deals from Milwaukee to Ontario. Data last updated June 4, 2026 and is based on user searches.
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/178:00 am
MKE
- YYZ
1 stop3h 35m
American Airlines
Sat 6/207:24 pm
YYZ
- MKE
1 stop5h 35m
American Airlines
Deal found 6/3![American Airlines logo]()
$531
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.
Mon 6/228:00 am
MKE
- YYZ
1 stop14h 23m
American Airlines
Sat 6/271:15 pm
YYZ
- MKE
1 stop7h 43m
American Airlines
Deal found 6/1![American Airlines logo]()
$527
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/257:00 am
MKE
- YUL
1 stop14h 59m
American Airlines
Tue 6/307:29 am
YUL
- MKE
1 stop17h 30m
American Airlines
Deal found 6/3![American Airlines logo]()
$504
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 7/16:20 am
MKE
- YUL
1 stop10h 10m
United Airlines
Wed 7/86:10 am
YUL
- MKE
1 stop4h 43m
United Airlines
Deal found 6/3![United Airlines logo]()
$482
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 7/11:30 pm
MKE
- YUL
1 stop8h 29m
American Airlines
Fri 7/312:30 pm
YUL
- MKE
1 stop6h 48m
American Airlines
Deal found 6/4![American Airlines logo]()
$503
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.
Thu 7/26:55 pm
MKE
- YUL
1 stop20h 52m
American Airlines
Mon 7/67:51 am
YUL
- MKE
1 stop16h 53m
American Airlines
Deal found 6/4![American Airlines logo]()
$525
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 7/37:01 am
MKE
- YUL
1 stop14h 55m
American Airlines
Sun 7/121:05 pm
YUL
- MKE
1 stop11h 39m
American Airlines
Deal found 6/1![American Airlines logo]()
$505
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.
Sat 7/46:00 am
MKE
- YUL
1 stop8h 19m
American Airlines
Sat 7/117:51 am
YUL
- MKE
1 stop5h 31m
American Airlines
Deal found 6/2![American Airlines logo]()
$472
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.
Sat 7/116:00 am
MKE
- YUL
1 stop14h 44m
American Airlines
Sat 7/187:51 am
YUL
- MKE
1 stop16h 53m
American Airlines
Deal found 6/2![American Airlines logo]()
$528
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.
Mon 7/138:38 am
MKE
- YUL
1 stop7h 09m
American Airlines
Thu 7/1612:30 pm
YUL
- MKE
1 stop9h 01m
American Airlines
Deal found 6/4![American Airlines logo]()
$520
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.
Sat 7/256:01 am
MKE
- YYZ
1 stop3h 58m
American Airlines
Sat 8/11:17 pm
YYZ
- MKE
1 stop6h 07m
American Airlines
Deal found 6/1![American Airlines logo]()
$522
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.
Wed 7/296:00 am
MKE
- YUL
1 stop5h 29m
American Airlines
Thu 8/135:34 pm
YUL
- MKE
1 stop15h 10m
American Airlines
Deal found 6/1![American Airlines logo]()
$484
One-way flights from Milwaukee to OntarioSearch for one-way flight options from Milwaukee to Ontario. Find affordable one-way fares based on user searches. Data last updated June 4, 2026.
Search for one-way flight options from Milwaukee to Ontario. Find affordable one-way fares based on user searches. Data last updated June 4, 2026.
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/231:28 pm
MKE
- YYZ
1 stop9h 01m
American Airlines
Deal found 5/31![American Airlines logo]()
$204
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.
Sat 7/46:00 am
MKE
- YUL
1 stop5h 29m
American Airlines
Deal found 6/4![American Airlines logo]()
$211
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.
Thu 7/96:00 am
MKE
- YUL
1 stop8h 19m
American Airlines
Deal found 6/1![American Airlines logo]()
$222
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 9/258:14 pm
MKE
- YYZ
1 stop13h 45m
American Airlines
Deal found 6/2![American Airlines logo]()
$223
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/159:15 am
MKE
- YYZ
1 stop13h 14m
American Airlines
Deal found 5/31![American Airlines logo]()
$225
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/118:20 am
MKE
- YYZ
1 stop14h 09m
American Airlines
Deal found 5/31![American Airlines logo]()
$226
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.
Mon 9/288:14 pm
MKE
- YUL
1 stop14h 30m
American Airlines
Deal found 6/4![American Airlines logo]()
$233
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.
Sat 8/812:58 pm
MKE
- YYZ
1 stop7h 40m
American Airlines
Deal found 6/2![American Airlines logo]()
$236
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/46:20 am
MKE
- YUL
2 stops8h 50m
United Airlines
Deal found 6/4![United Airlines logo]()
$238
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/268:43 am
MKE
- YYZ
1 stop31h 02m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$239
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/115:00 am
MKE
- YYZ
1 stop11h 56m
United Airlines
Deal found 6/2![United Airlines logo]()
$243
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.
Sun 8/98:43 am
MKE
- YYZ
2 stops36h 12m
Multiple Airlines
Deal found 6/2![Multiple Airlines logo]()
$251
Find flight deals from Milwaukee to Ontario
Keep the following information in mind while searching for Milwaukee to Ontario flight deals. Data was last updated June 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $464 (American Airlines) |
One-way from | $204 (American Airlines) |
Popular in | August |
Cheapest in | May |
Average price | $662 |
Cheapflights Fare Finder
Customize your flight search to find flights from Milwaukee to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 4, 2026.
Use the filters below to find and compare flights from Milwaukee to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
MilwaukeeMontreal
MKE - YUL
MKEYUL
Milwaukee-Mitchell
Sat 10/31
6:00 am-1:51 pm
1 stop6h 51m
Montreal Pierre Elliott Trudeau Intl
Tue 11/3
4:45 pm-10:39 pm
1 stop6h 54m
$482
MilwaukeeMontreal
MKE - YUL
MKEYUL
Milwaukee-Mitchell
Wed 7/1
5:00 am-5:30 pm
1 stop11h 30m
Montreal Pierre Elliott Trudeau Intl
Wed 7/8
9:15 am-4:42 pm
2 stops8h 27m
$492
MilwaukeeMontreal
MKE - YUL
MKEYUL
Milwaukee-Mitchell
Mon 7/13
8:38 am-4:47 pm
1 stop7h 09m
Montreal Pierre Elliott Trudeau Intl
Wed 7/15
1:05 pm-11:44 pm
1 stop11h 39m
$504
MilwaukeeMontreal
MKE - YUL
MKEYUL
Milwaukee-Mitchell
Tue 7/14
1:40 pm-10:56 pm
1 stop8h 16m
Montreal Pierre Elliott Trudeau Intl
Thu 7/16
12:30 pm-8:02 am
1 stop20h 32m
$504
MilwaukeeOttawa
MKE - YOW
MKEYOW
Milwaukee-Mitchell
Sat 8/8
6:14 am-4:38 pm
1 stop9h 24m
Ottawa
Wed 8/12
5:57 pm-11:37 pm
1 stop6h 40m
$505
MilwaukeeToronto
MKE - YYZ
MKEYYZ
Milwaukee-Mitchell
Sat 10/31
10:45 am-4:28 pm
1 stop4h 43m
Toronto Pearson Intl
Wed 11/4
3:00 pm-11:27 pm
1 stop9h 27m
$544
MilwaukeeMontreal
MKE - YUL
MKEYUL
Milwaukee-Mitchell
Fri 7/3
6:21 pm-1:49 pm
1 stop18h 28m
Montreal Pierre Elliott Trudeau Intl
Sun 7/5
7:50 am-11:44 pm
1 stop16h 54m
$553
MilwaukeeToronto
MKE - YYZ
MKEYYZ
Milwaukee-Mitchell
Tue 8/25
8:20 am-2:33 pm
1 stop5h 13m
Toronto Pearson Intl
Mon 8/31
8:00 am-12:23 pm
1 stop5h 23m
$565
MilwaukeeToronto
MKE - YYZ
MKEYYZ
Milwaukee-Mitchell
Tue 7/14
10:44 am-9:32 pm
1 stop9h 48m
Toronto Pearson Intl
Fri 7/17
8:45 am-12:48 pm
1 stop5h 03m
$565
Quickest round-trip
MilwaukeeToronto
MKE - YYZ
MKEYYZ
Milwaukee-Mitchell
Mon 7/6
7:23 pm-11:59 pm
1 stop3h 36m
Toronto Pearson Intl
Wed 7/8
10:15 am-2:36 pm
1 stop5h 21m
$565
Showing 1-10 of 56 resultsSorted by cheapest first
Best time to book a flight from Milwaukee to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Milwaukee with our price prediction graph.
MKE-YUL
MKE-YYZ
MKE-YXU
MKE-YOW
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Milwaukee to Ontario
MKE-CAON
MKE-YUL
MKE-YYZ
MKE-YXU
MKE-YOW
What is the cheapest month to book a flight from Milwaukee to Region of Ontario?
Currently, September is the cheapest month in which you can book a flight from Milwaukee to Region of Ontario (average of $221). Flying from Milwaukee to Region of Ontario in December is currently the most expensive (average of $1,095). 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 Milwaukee to Region of Ontario?
Reviews of airlines servicing Ontario
Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated June 4, 2026.
See what other customers who have flown with Delta,United Airlines, andWestJet from Milwaukee to Ontario have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.2
Overall
7.9
Boarding
8.1
Crew
8.5
Entertainment
7.8
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Overall
7.9
Boarding
8.1
Crew
8.5
Entertainment
7.8
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Overall
7.9
Boarding
8.1
Crew
8.5
Entertainment
7.8
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Overall
7.9
Boarding
8.1
Crew
8.5
Entertainment
7.8
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from Milwaukee to Ontario. 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 Milwaukee to Ontario
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Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from Milwaukee to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Milwaukee and Ontario flights
Browse other Milwaukee and Ontario flight options. Last updated on June 4, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Milwaukee to Ontario flights
Consider these flights traveling from Milwaukee to Ontario.
Top airline flying from Milwaukee to Ontario
Discover the top airline that operate flights from Milwaukee to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$362 | Average$572 | FlexibilityNo cancel fee | On-time69% |