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$172+ 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 8/15. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — YYZ
Aug 8 — Aug 151
Sat 8/8
Sat 8/15
1 adult, Economy
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Cheap flight deals from Milwaukee to Ontario

Cheapest flights from Milwaukee to Ontario
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 July 9, 2026.

This American Airlines deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 9/228:31 am
MKE
-
YYZ
1 stop8h 13m
American Airlines
Sun 9/276:30 am
YYZ
-
MKE
1 stop8h 46m
American Airlines
Deal found 7/9$439
This American Airlines deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 7/286:25 am
MKE
-
YYZ
1 stop9h 20m
American Airlines
Sat 8/87:29 am
YYZ
-
MKE
1 stop14h 31m
American Airlines
Deal found 7/9$476
This American Airlines deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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 8/86:20 am
MKE
-
YYZ
1 stop14h 18m
American Airlines
Tue 8/117:20 am
YYZ
-
MKE
1 stop14h 40m
American Airlines
Deal found 7/9$477
This American Airlines deal was found by Cheapflights users on 7/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/118:14 pm
MKE
-
YYZ
1 stop13h 45m
American Airlines
Tue 9/1511:40 am
YYZ
-
MKE
1 stop9h 23m
American Airlines
Deal found 7/5$488
This American Airlines deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” 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 8/41:40 pm
MKE
-
YUL
1 stop8h 16m
American Airlines
Tue 8/115:34 pm
YUL
-
MKE
1 stop4h 26m
American Airlines
Deal found 7/7$492
This American Airlines deal was found by Cheapflights users on 7/9. Clicking the “Pick Dates” 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.
Sun 7/266:08 am
MKE
-
YYZ
1 stop5h 28m
American Airlines
Thu 8/67:20 am
YYZ
-
MKE
1 stop13h 39m
American Airlines
Deal found 7/9$496
This oojo deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:30 am
MKE
-
YUL
2 stops9h 15m
WestJet
Tue 8/256:00 am
YUL
-
MKE
1 stop13h 08m
WestJet
Deal found 7/6$496
This American Airlines deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” 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.
Sun 8/27:25 am
MKE
-
YYZ
1 stop9h 09m
American Airlines
Wed 8/57:15 pm
YYZ
-
MKE
1 stop13h 34m
American Airlines
Deal found 7/8$499
This United Airlines deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” 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 8/46:20 am
MKE
-
YUL
2 stops7h 20m
United Airlines
Tue 8/116:10 am
YUL
-
MKE
1 stop4h 50m
United Airlines
Deal found 7/7$501
This United Airlines deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” 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 8/56:20 am
MKE
-
YUL
2 stops7h 20m
United Airlines
Tue 8/119:15 am
YUL
-
MKE
2 stops9h 00m
United Airlines
Deal found 7/7$507
This American Airlines deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” 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 8/86:35 am
MKE
-
YUL
1 stop6h 11m
American Airlines
Sat 8/84:15 pm
YUL
-
MKE
1 stop18h 36m
American Airlines
Deal found 7/7$509
This American Airlines deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” 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 8/292:42 pm
MKE
-
YYZ
1 stop7h 47m
American Airlines
Sat 9/511:39 am
YYZ
-
MKE
1 stop10h 21m
American Airlines
Deal found 7/6$510

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 July 9, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$439
(American Airlines)

One-way from

$172
(American Airlines)

Popular in

August

Cheapest in

July

Average price

$609
Provider with most accurate pricing for Milwaukee-Mitchell-Toronto (YTO) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Milwaukee-Mitchell-Toronto (YTO) flights.
Search Deals
From Milwaukee-Mitchell to Ontario
Search Deals
One-way flight from Milwaukee-Mitchell to Ontario
Search Deals
Highest demand for flights based on searches. 0% potential increase in price ($2 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

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 July 9, 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

Price

Cheapest round-trip

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Sat 9/12

12:05 pm-5:30 pm

1 stop4h 25m

Montreal Pierre Elliott Trudeau Intl

Wed 9/16

11:23 am-6:23 pm

1 stop8h 00m

$492

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Fri 10/30

6:02 pm-12:21 pm

1 stop17h 19m

Montreal Pierre Elliott Trudeau Intl

Mon 11/2

3:52 pm-11:12 am

1 stop20h 20m

$492

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Sat 10/10

6:00 am-4:10 pm

1 stop9h 10m

Montreal Pierre Elliott Trudeau Intl

Wed 10/14

4:55 pm-10:59 pm

1 stop7h 04m

$492

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Sat 9/19

5:00 am-10:40 am

1 stop4h 40m

Montreal Pierre Elliott Trudeau Intl

Tue 9/22

11:23 am-6:23 pm

1 stop8h 00m

$492

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Thu 9/17

7:14 am-11:58 am

1 stop3h 44m

Montreal Pierre Elliott Trudeau Intl

Sun 9/20

6:00 am-8:52 am

1 stop3h 52m

$501

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Tue 8/4

5:00 am-2:40 pm

2 stops8h 40m

Montreal Pierre Elliott Trudeau Intl

Sat 8/8

6:10 am-12:48 pm

1 stop7h 38m

$501

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Sat 9/19

10:30 am-7:45 pm

2 stops8h 15m

Montreal Pierre Elliott Trudeau Intl

Sat 9/26

6:00 am-1:43 pm

2 stops8h 43m

$507

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Sun 9/13

3:52 pm-9:26 pm

1 stop4h 34m

Montreal Pierre Elliott Trudeau Intl

Wed 9/16

9:45 am-3:11 pm

1 stop6h 26m

$513

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Sun 10/11

6:00 am-1:09 pm

1 stop6h 09m

Montreal Pierre Elliott Trudeau Intl

Wed 10/14

4:55 pm-9:25 pm

1 stop5h 30m

$513

MilwaukeeToronto

MKE - YYZ

MKEYYZ

Milwaukee-Mitchell

Wed 8/5

7:23 pm-11:59 pm

1 stop3h 36m

Toronto Pearson Intl

Wed 8/12

7:00 am-10:00 am

1 stop4h 00m

$539

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/9

Showing 1-10 of 45 resultsSorted by cheapest first
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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.
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

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 July 9, 2026.
See what other customers who have flown with Delta and United 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.
Delta
7.8
Good
8,453 reviews

Comfort

7.8

Overall

7.8

Food

7.2

Entertainment

7.8

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Delta
7.8
Good
8,453 reviews
Delta
7.8
Good
8,453 reviews

Comfort

7.8

Overall

7.8

Food

7.2

Entertainment

7.8

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
United Airlines
7.4
Good
9,955 reviews
Delta
7.8
Good
8,453 reviews

Comfort

7.8

Overall

7.8

Food

7.2

Entertainment

7.8

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

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.

  • What airport do you fly from for flights from Milwaukee to Ontario?

    If you book a flight to Ontario from Milwaukee, you will be flying from Milwaukee-Mitchell, which is the city’s only airport. Milwaukee-Mitchell (MKE) is located 6.4 mi from the center of Milwaukee.

  • How long is the flight from Milwaukee to Region of Ontario?

    A quick flight from Milwaukee to Region of Ontario can take about 4h 25m. United Airlines provides one of the quickest options available for as low as $492. Airlines will cover a distance of 720 mi.

  • What are the most popular routes from Milwaukee to Region of Ontario?

    While some choose either Milwaukee-Mitchell - Montreal Pierre Elliott Trudeau Intl or Milwaukee-Mitchell - Ottawa, Milwaukee-Mitchell - Toronto Pearson Intl is the most popular route from Milwaukee to Region of Ontario.

  • Can I find deals for flights from Milwaukee to Ontario that include hotel bookings?

    Yes. In addition to deals on Milwaukee to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Milwaukee to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Milwaukee to Ontario.

  • Can I find deals for business class flights from Milwaukee to Ontario?

    Yes. Cheapflights offers flight deals from Milwaukee to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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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 July 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$348Average$572FlexibilityNo cancel feeOn-time69%

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