$197+ 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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — YYZ
Sep 30 — Oct 71
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Milwaukee to Ontario with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Milwaukee to Ontario
Cheapest
Best
Last-minute
One-way
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 August 31, 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 August 31, 2026.
This American Airlines deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” 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 9/197:30 am -
1 stop9h 14m
Sat 9/2611:40 am -
1 stop9h 23m
Deal found 8/26![American Airlines logo]()
$428
This American Airlines deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 9/262:48 pm -
1 stop7h 38m
Sat 10/36:30 am -
1 stop8h 46m
Deal found 8/27![American Airlines logo]()
$439
This American Airlines deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” 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 10/108:45 am -
1 stop7h 59m
Sat 10/171:15 pm -
1 stop7h 43m
Deal found 8/28![American Airlines logo]()
$447
This American Airlines deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 10/137:19 pm -
1 stop14h 40m
Tue 10/207:29 am -
1 stop7h 55m
Deal found 8/27![American Airlines logo]()
$448
This American Airlines deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” 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 10/76:00 am -
1 stop9h 47m
Wed 10/147:29 am -
1 stop12h 07m
Deal found 8/26![American Airlines logo]()
$470
This Delta deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” 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 9/2210:44 am -
1 stop7h 09m
Tue 9/296:00 am -
1 stop7h 48m
Deal found 8/26![Delta logo]()
$471
This American Airlines deal was found by Cheapflights users on 8/30. 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.
Wed 9/237:30 am -
1 stop10h 05m
Sat 9/266:30 am -
1 stop7h 18m
Deal found 8/30![American Airlines logo]()
$477
This United Airlines deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/225:00 am -
1 stop4h 40m
Tue 9/296:00 am -
2 stops10h 11m
Deal found 8/26![United Airlines logo]()
$481
This United Airlines deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” 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 9/212:20 pm -
1 stop6h 06m
Tue 9/296:00 am -
1 stop5h 48m
Deal found 8/26![United Airlines logo]()
$490
This American Airlines deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 10/245:01 am -
1 stop8h 32m
Mon 10/267:29 am -
1 stop12h 07m
Deal found 8/27![American Airlines logo]()
$494
This American Airlines deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 11/195:08 am -
1 stop10h 25m
Sun 11/226:21 pm -
1 stop14h 35m
Deal found 8/27![American Airlines logo]()
$506
This Kiwi.com deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 12/57:15 am -
1 stop5h 20m
Tue 12/84:49 pm -
1 stop4h 33m
Deal found 8/27![WestJet logo]()
$506
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 August 31, 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 August 31, 2026.
This Delta deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 2/209:20 am -
1 stop5h 39m
Tue 2/236:00 am -
1 stop7h 27m
Deal found 8/27![Delta logo]()
$471
This United Airlines deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/225:00 am -
1 stop4h 40m
Tue 9/296:00 am -
2 stops10h 11m
Deal found 8/26![United Airlines logo]()
$481
This American Airlines deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 10/245:01 am -
1 stop8h 32m
Mon 10/267:29 am -
1 stop12h 07m
Deal found 8/27![American Airlines logo]()
$494
This Rumbo deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/194:57 pm -
1 stop5h 02m
Mon 9/219:45 am -
1 stop9h 22m
Deal found 8/28![WestJet logo]()
$583
This Kiwi.com deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3010:49 am -
2 stops32h 03m
Fri 11/68:00 am -
1 stop12h 08m
Deal found 8/28![Multiple Airlines logo]()
$650
This Air Canada deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” 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.
Tue 9/295:00 am -
2 stops7h 17m
Sat 10/36:00 am -
2 stops8h 43m
Deal found 8/29![Air Canada logo]()
$822
This United Airlines deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” 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 9/236:05 am -
1 stop6h 04m
Tue 9/296:00 am -
2 stops8h 43m
Deal found 8/26![United Airlines logo]()
$481
This Delta deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 2/209:20 am -
1 stop5h 39m
Mon 2/222:25 pm -
1 stop7h 31m
Deal found 8/27![Delta logo]()
$522
This United Airlines deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” 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 9/212:20 pm -
1 stop6h 06m
Tue 9/296:00 am -
1 stop5h 48m
Deal found 8/26![United Airlines logo]()
$490
This Delta deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” 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 9/2210:44 am -
1 stop7h 09m
Wed 9/3012:48 pm -
1 stop6h 19m
Deal found 8/29![Delta logo]()
$536
This United Airlines deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/85:00 am -
1 stop3h 47m
Wed 12/98:35 am -
1 stop6h 18m
Deal found 8/26![United Airlines logo]()
$522
This Delta deal was found by Cheapflights users on 8/31. 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 12/16:42 pm -
1 stop3h 51m
Wed 12/912:50 pm -
1 stop8h 32m
Deal found 8/31![Delta logo]()
$536
This United Airlines deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” 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 10/2010:42 am -
1 stop5h 48m
Wed 10/216:10 am -
1 stop10h 01m
Deal found 8/29![United Airlines logo]()
$536
This Delta deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” 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 10/249:35 am -
1 stop6h 44m
Mon 10/269:40 am -
1 stop7h 25m
Deal found 8/28![Delta logo]()
$541
This United Airlines deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” 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 10/146:00 am -
1 stop6h 09m
Wed 10/216:10 am -
1 stop4h 57m
Deal found 8/29![United Airlines logo]()
$536
This Delta deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” 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 10/138:00 am -
1 stop8h 38m
Sat 10/246:00 am -
1 stop3h 50m
Deal found 8/28![Delta logo]()
$594
This United Airlines deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” 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 2/109:20 am -
2 stops9h 18m
Sat 2/134:45 pm -
1 stop5h 09m
Deal found 8/29![United Airlines logo]()
$546
This United Airlines deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” 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 10/145:00 am -
1 stop4h 40m
Sat 10/179:15 am -
2 stops10h 54m
Deal found 8/29![United Airlines logo]()
$546
This Delta deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” 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 9/134:57 pm -
1 stop5h 02m
Tue 9/296:15 am -
1 stop9h 52m
Deal found 8/29![Delta logo]()
$615
This Delta deal was found by Cheapflights users on 8/30. 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.
Fri 12/1812:47 pm -
1 stop9h 39m
Wed 1/66:30 am -
1 stop11h 15m
Deal found 8/30![Delta logo]()
$615
This United Airlines deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” 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 9/193:52 pm -
1 stop3h 52m
Sat 10/38:50 am -
1 stop3h 40m
Deal found 8/29![United Airlines logo]()
$597
This Delta deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” 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 9/186:47 pm -
1 stop3h 12m
Tue 9/2912:25 pm -
1 stop8h 09m
Deal found 8/29![Delta logo]()
$615
This Delta deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” 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 9/147:14 am -
1 stop7h 01m
Thu 10/16:15 am -
1 stop15h 54m
Deal found 8/29![Delta logo]()
$615
This United Airlines deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” 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 10/106:47 pm -
1 stop4h 12m
Mon 10/128:50 am -
1 stop3h 40m
Deal found 8/29![United Airlines logo]()
$619
This United Airlines deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/295:00 am -
1 stop7h 59m
Sat 10/35:20 pm -
1 stop6h 39m
Deal found 8/26![United Airlines logo]()
$630
This United Airlines deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” 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 10/18:30 am -
1 stop7h 46m
Fri 10/166:25 am -
1 stop4h 42m
Deal found 8/28![United Airlines logo]()
$722
This United Airlines deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” 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 10/308:00 am -
1 stop5h 09m
Fri 11/64:46 pm -
1 stop6h 29m
Deal found 8/28![United Airlines logo]()
$722
This United Airlines deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” 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 10/146:15 am -
1 stop6h 44m
Wed 10/216:05 am -
1 stop5h 43m
Deal found 8/29![United Airlines logo]()
$722
This United Airlines deal was found by Cheapflights users on 8/31. 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.
Fri 10/166:15 am -
1 stop6h 44m
Sun 10/186:01 pm -
2 stops14h 06m
Deal found 8/31![United Airlines logo]()
$732
This United Airlines deal was found by Cheapflights users on 8/31. 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 10/156:15 am -
2 stops7h 35m
Thu 10/225:40 am -
2 stops6h 50m
Deal found 8/31![United Airlines logo]()
$997
Last-minute flights from Milwaukee to OntarioDiscover last-minute flight deals from Milwaukee to Ontario. Data last updated August 31, 2026 and is based on user searches.
Discover last-minute flight deals from Milwaukee to Ontario. Data last updated August 31, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 9/101:28 pm -
1 stop8h 59m
Sun 9/136:00 am -
1 stop3h 48m
Deal found 8/27![Delta logo]()
$508
This American Airlines deal was found by Cheapflights users on 8/31. 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 9/158:03 am -
1 stop7h 57m
Tue 9/221:15 pm -
1 stop9h 39m
Deal found 8/31![American Airlines logo]()
$537
This Kiwi.com deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/157:14 am -
1 stop3h 04m
Sat 10/36:00 am -
1 stop3h 48m
Deal found 8/29![WestJet logo]()
$551
This American Airlines deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” 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 9/197:30 am -
1 stop9h 14m
Sat 9/2611:40 am -
1 stop9h 23m
Deal found 8/26![American Airlines logo]()
$428
This United Airlines deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” 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 9/212:20 pm -
1 stop6h 06m
Tue 9/296:00 am -
1 stop5h 48m
Deal found 8/26![United Airlines logo]()
$490
This Delta deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” 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 9/2210:44 am -
1 stop7h 09m
Tue 9/296:00 am -
1 stop7h 48m
Deal found 8/26![Delta logo]()
$471
This United Airlines deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/225:00 am -
1 stop4h 40m
Tue 9/296:00 am -
2 stops10h 11m
Deal found 8/26![United Airlines logo]()
$481
This Delta deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” 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 9/2210:44 am -
1 stop7h 09m
Wed 9/3012:48 pm -
1 stop6h 19m
Deal found 8/29![Delta logo]()
$536
This United Airlines deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/228:39 am -
2 stops10h 06m
Wed 9/309:45 am -
1 stop4h 58m
Deal found 8/29![United Airlines logo]()
$546
This American Airlines deal was found by Cheapflights users on 8/30. 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.
Wed 9/237:30 am -
1 stop10h 05m
Sat 9/266:30 am -
1 stop7h 18m
Deal found 8/30![American Airlines logo]()
$477
This Kiwi.com deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 9/2410:00 am -
2 stops29h 45m
Thu 10/16:00 am -
1 stop3h 48m
Deal found 8/27![WestJet logo]()
$553
This American Airlines deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 9/262:48 pm -
1 stop7h 38m
Sat 10/36:30 am -
1 stop8h 46m
Deal found 8/27![American Airlines logo]()
$439
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 August 31, 2026.
Search for one-way flight options from Milwaukee to Ontario. Find affordable one-way fares based on user searches. Data last updated August 31, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/510:15 am -
1 stop26h 25m
Deal found 8/29![Multiple Airlines logo]()
$197
This Kiwi.com deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/310:15 am -
3 stops35h 40m
Deal found 8/29![Multiple Airlines logo]()
$203
This American Airlines deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” 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 9/191:18 pm -
1 stop9h 08m
Deal found 8/29![American Airlines logo]()
$205
This American Airlines deal was found by Cheapflights users on 8/30. 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.
Sat 9/268:31 am -
1 stop13h 55m
Deal found 8/30![American Airlines logo]()
$210
This Kiwi.com deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/68:03 pm -
1 stop16h 37m
Deal found 8/29![Multiple Airlines logo]()
$227
This Delta deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 9/193:59 pm -
1 stop6h 14m
Deal found 8/27![Delta logo]()
$232
This American Airlines deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” 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 9/235:03 am -
1 stop5h 41m
Deal found 8/28![American Airlines logo]()
$239
This United Airlines deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” 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 9/235:00 am -
2 stops7h 09m
Deal found 8/28![United Airlines logo]()
$244
This American Airlines deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” 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 -
1 stop14h 30m
Deal found 8/27![American Airlines logo]()
$245
This Kissandfly.com deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/195:00 am -
2 stops8h 19m
Deal found 8/29![Lufthansa logo]()
$250
This Thrive Travel deal was found by Cheapflights users on 8/30. 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 Thrive Travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1111:37 am -
1 stop5h 58m
Deal found 8/30![Japan Airlines logo]()
$258
This United Airlines deal was found by Cheapflights users on 8/31. 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.
Mon 9/285:00 am -
1 stop4h 40m
Deal found 8/31![United Airlines logo]()
$260
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 August 31, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $428 (American Airlines) |
One-way from | $197 (Kiwi.com) |
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 7,457,451 searches. Data last updated August 31, 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 Milwaukee-Mitchell - YUL Montreal Pierre Elliott Trudeau Intl
MKEYUL
Milwaukee-Mitchell
Sat 2/20
9:20 am-3:59 pm
1 stop5h 39m
Montreal Pierre Elliott Trudeau Intl
Tue 2/23
6:00 am-12:27 pm
1 stop7h 27m
$471
MilwaukeeMontreal
MKE Milwaukee-Mitchell - YUL Montreal Pierre Elliott Trudeau Intl
MKEYUL
Milwaukee-Mitchell
Tue 9/22
5:00 am-10:40 am
1 stop4h 40m
Montreal Pierre Elliott Trudeau Intl
Tue 9/29
6:00 am-3:11 pm
2 stops10h 11m
$481
MilwaukeeMontreal
MKE Milwaukee-Mitchell - YUL Montreal Pierre Elliott Trudeau Intl
MKEYUL
Milwaukee-Mitchell
Wed 9/23
6:05 am-1:09 pm
1 stop6h 04m
Montreal Pierre Elliott Trudeau Intl
Tue 9/29
6:00 am-1:43 pm
2 stops8h 43m
$481
MilwaukeeMontreal
MKE Milwaukee-Mitchell - YUL Montreal Pierre Elliott Trudeau Intl
MKEYUL
Milwaukee-Mitchell
Mon 9/21
2:20 pm-9:26 pm
1 stop6h 06m
Montreal Pierre Elliott Trudeau Intl
Tue 9/29
6:00 am-10:48 am
1 stop5h 48m
$490
MilwaukeeToronto
MKE Milwaukee-Mitchell - YYZ Toronto Pearson Intl
MKEYYZ
Milwaukee-Mitchell
Sat 10/24
5:01 am-2:33 pm
1 stop8h 32m
Toronto Pearson Intl
Mon 10/26
7:29 am-6:36 pm
1 stop12h 07m
$494
MilwaukeeMontreal
MKE Milwaukee-Mitchell - YUL Montreal Pierre Elliott Trudeau Intl
MKEYUL
Milwaukee-Mitchell
Sat 2/20
9:20 am-3:59 pm
1 stop5h 39m
Montreal Pierre Elliott Trudeau Intl
Mon 2/22
2:25 pm-8:56 pm
1 stop7h 31m
$522
MilwaukeeToronto
MKE Milwaukee-Mitchell - YYZ Toronto Pearson Intl
MKEYYZ
Milwaukee-Mitchell
Tue 12/8
5:00 am-9:47 am
1 stop3h 47m
Toronto Pearson Intl
Wed 12/9
8:35 am-1:53 pm
1 stop6h 18m
$522
MilwaukeeMontreal
MKE Milwaukee-Mitchell - YUL Montreal Pierre Elliott Trudeau Intl
MKEYUL
Milwaukee-Mitchell
Tue 9/22
10:44 am-6:53 pm
1 stop7h 09m
Montreal Pierre Elliott Trudeau Intl
Wed 9/30
12:48 pm-6:07 pm
1 stop6h 19m
$536
MilwaukeeMontreal
MKE Milwaukee-Mitchell - YUL Montreal Pierre Elliott Trudeau Intl
MKEYUL
Milwaukee-Mitchell
Tue 12/1
6:42 pm-11:33 pm
1 stop3h 51m
Montreal Pierre Elliott Trudeau Intl
Wed 12/9
12:50 pm-8:22 pm
1 stop8h 32m
$536
MilwaukeeMontreal
MKE Milwaukee-Mitchell - YUL Montreal Pierre Elliott Trudeau Intl
MKEYUL
Milwaukee-Mitchell
Tue 10/20
10:42 am-5:30 pm
1 stop5h 48m
Montreal Pierre Elliott Trudeau Intl
Wed 10/21
6:10 am-3:11 pm
1 stop10h 01m
$536
Showing 1-10 of 53 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-YYZ
MKE-YUL
MKE-YOW
MKE-YXU
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-YYZ
MKE-YUL
MKE-YOW
MKE-YXU
What is the cheapest month to book a flight from Milwaukee to Region of Ontario?
Currently, March is the cheapest month in which you can book a flight from Milwaukee to Region of Ontario (average of $365). Flying from Milwaukee to Region of Ontario in May is currently the most expensive (average of $1,260). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Reviews of airlines servicing 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 August 31, 2026.
See what other customers who have flown with United Airlines and American Airlines 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.
Overall
7.4
Comfort
7.3
Food
6.7
Crew
8.1
Entertainment
7.1
Boarding
7.7
Reviews
1 / 20
2.0
MediocreDeb,Jan 2025
MKE - ORD
Overall
7.4
Comfort
7.3
Food
6.7
Crew
8.1
Entertainment
7.1
Boarding
7.7
Reviews
1 / 20
2.0
MediocreDeb,Jan 2025
MKE - ORD
Overall
7.4
Comfort
7.3
Food
6.7
Crew
8.1
Entertainment
7.1
Boarding
7.7
Reviews
1 / 20
2.0
MediocreDeb,Jan 2025
MKE - ORD
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Top destinations
Alternative routes for Milwaukee to Ontario
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Milwaukee to Ontario by cabin class
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 August 31, 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 2 airlines flying from Milwaukee to Ontario
Discover the top 2 airlines 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 7,457,451 searches. Data last updated August 31, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$348 | Average$572 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$437 | Average$601 | FlexibilityNo cancel fee | On-time71% |