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Milwaukee

$222+ Cheap flights from Ontario to Milwaukee (MKE)

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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — MKE
Mar 6 — Mar 131
Fri 3/6
Fri 3/13
1 adult, Economy
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Cheap flight deals from Ontario to Milwaukee

Cheapest flights from Ontario to Milwaukee
Explore the most affordable flight options available from Ontario to Milwaukee. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 4, 2026.

This United Airlines deal was found by Cheapflights users on 2/2. 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.
Thu 2/266:20 am
YOW
-
MKE
1 stop5h 10m
United Airlines
Mon 3/26:00 am
MKE
-
YOW
1 stop14h 18m
United Airlines
Deal found 2/2$319
This United Airlines deal was found by Cheapflights users on 2/2. 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.
Mon 3/25:11 pm
YOW
-
MKE
1 stop6h 17m
United Airlines
Mon 3/97:18 pm
MKE
-
YOW
2 stops18h 12m
United Airlines
Deal found 2/2$374
This American Airlines deal was found by Cheapflights users on 2/3. 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 3/54:44 pm
YYZ
-
MKE
1 stop16h 05m
American Airlines
Thu 3/125:00 am
MKE
-
YYZ
1 stop10h 03m
American Airlines
Deal found 2/3$404
This American Airlines deal was found by Cheapflights users on 2/3. 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.
Tue 4/141:15 pm
YYZ
-
MKE
1 stop11h 25m
American Airlines
Fri 4/175:06 am
MKE
-
YYZ
1 stop8h 27m
American Airlines
Deal found 2/3$409
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/182:29 pm
YUL
-
MKE
1 stop8h 22m
Delta
Sat 2/215:00 pm
MKE
-
YUL
1 stop5h 10m
Delta
Deal found 2/2$428
This United Airlines deal was found by Cheapflights users on 2/1. 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.
Wed 2/184:45 pm
YUL
-
MKE
1 stop5h 10m
United Airlines
Sat 2/217:00 am
MKE
-
YUL
2 stops7h 16m
United Airlines
Deal found 2/1$429
This Alaska Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/244:45 pm
YYZ
-
MKE
1 stop23h 06m
Alaska Airlines
Fri 2/273:47 pm
MKE
-
YYZ
1 stop22h 48m
Alaska Airlines
Deal found 2/3$447
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/57:10 am
YYZ
-
MKE
1 stop12h 32m
Multiple Airlines
Thu 3/129:01 pm
MKE
-
YYZ
2 stops16h 39m
Multiple Airlines
Deal found 2/3$448
This Alaska Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/264:45 pm
YYZ
-
MKE
1 stop23h 06m
Alaska Airlines
Mon 3/23:47 pm
MKE
-
YYZ
1 stop22h 48m
Alaska Airlines
Deal found 2/2$457
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/237:10 am
YYZ
-
MKE
1 stop13h 16m
Multiple Airlines
Sun 3/16:39 pm
MKE
-
YYZ
2 stops27h 41m
Multiple Airlines
Deal found 2/2$461
This United Airlines deal was found by Cheapflights users on 2/3. 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.
Sat 2/144:45 pm
YUL
-
MKE
1 stop6h 43m
United Airlines
Sat 2/216:00 am
MKE
-
YUL
2 stops8h 16m
United Airlines
Deal found 2/3$465
This Alaska Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/124:45 pm
YYZ
-
MKE
1 stop23h 06m
Alaska Airlines
Mon 3/163:53 pm
MKE
-
YYZ
1 stop22h 42m
Alaska Airlines
Deal found 2/2$468

Find flight deals from Ontario to Milwaukee

Keep the following information in mind while searching for Ontario to Milwaukee flight deals. Data was last updated February 4, 2026.

Round-trip from

$319
(United Airlines)

One-way from

$222
(American Airlines)

Popular in

October

Cheapest in

April

Average price

$332
From Ontario to Milwaukee-Mitchell
Search Deals
One-way flight from Ontario to Milwaukee-Mitchell
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($61 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Milwaukee 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 February 4, 2026.
Use the filters below to find and compare flights from Ontario to Milwaukee that are best for you.

Fly from

Ontario

Fly to

Milwaukee

Route

Depart

Return

Price

OttawaMilwaukee

YOW - MKE

YOWMKE

Ottawa

Thu 2/26

6:20 am-10:30 am

1 stop5h 10m

Milwaukee-Mitchell

Mon 3/2

6:00 am-9:18 pm

1 stop14h 18m

$319

OttawaMilwaukee

YOW - MKE

YOWMKE

Ottawa

Mon 3/2

10:30 am-8:55 pm

2 stops11h 25m

Milwaukee-Mitchell

Mon 3/9

6:00 am-2:30 pm

2 stops7h 30m

$374

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Tue 4/14

1:15 pm-11:40 pm

1 stop11h 25m

Milwaukee-Mitchell

Fri 4/17

5:06 am-2:33 pm

1 stop8h 27m

$409

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Wed 2/18

2:29 pm-9:51 pm

1 stop8h 22m

Milwaukee-Mitchell

Sat 2/21

5:00 pm-11:10 pm

1 stop5h 10m

$428

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Wed 2/18

4:45 pm-8:55 pm

1 stop5h 10m

Milwaukee-Mitchell

Sat 2/21

9:44 am-7:48 pm

2 stops9h 04m

$428

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Tue 2/24

4:45 pm-2:51 pm

1 stop23h 06m

Milwaukee-Mitchell

Fri 2/27

3:47 pm-3:35 pm

1 stop22h 48m

$447

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Thu 2/26

4:45 pm-2:51 pm

1 stop23h 06m

Milwaukee-Mitchell

Mon 3/2

3:47 pm-3:35 pm

1 stop22h 48m

$457

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Mon 2/23

7:10 am-7:26 pm

1 stop13h 16m

Milwaukee-Mitchell

Sun 3/1

6:39 pm-11:20 pm

2 stops27h 41m

$461

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Sat 2/14

9:37 am-5:39 pm

1 stop9h 02m

Milwaukee-Mitchell

Sat 2/21

6:40 am-11:59 am

1 stop4h 19m

$465

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Sat 2/14

2:13 pm-10:28 pm

2 stops9h 15m

Milwaukee-Mitchell

Sat 2/21

9:44 am-7:48 pm

2 stops9h 04m

$465

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/3

Showing 1-10 of 40 results
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Best time to book a flight from Ontario to Milwaukee

Have a flexible travel schedule? Discover the best time to fly to Milwaukee from Ontario 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 Ontario to Milwaukee

What is the cheapest month to book a flight from Region of Ontario to Milwaukee?

Currently, April is the cheapest month in which you can book a flight from Region of Ontario to Milwaukee (average of $82). Flying from Region of Ontario to Milwaukee in February is currently the most expensive (average of $184). 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 Region of Ontario to Milwaukee?

Related info for your journey

Find useful and relevant information for your journey from Ontario to Milwaukee. 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 into for flights to Milwaukee from Ontario?

    Milwaukee-Mitchell (MKE), located 6.4 mi from the city center, is the airport you fly into when you book flights from Ontario to Milwaukee.

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

    A quick flight from Region of Ontario to Milwaukee can take about 5h 10m. United Airlines provides one of the quickest options available for as low as $319. Airlines will cover a distance of 627 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    The most popular route from Region of Ontario to Milwaukee is Toronto Pearson Intl - Milwaukee-Mitchell. You may also consider Ottawa - Milwaukee-Mitchell or Montreal Pierre Elliott Trudeau Intl - Milwaukee-Mitchell.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Milwaukee 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 Region of Ontario to Milwaukee?

    Currently, April is the cheapest month in which you can book a flight from Region of Ontario to Milwaukee (average of $82). Flying from Region of Ontario to Milwaukee in February is currently the most expensive (average of $184). 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

Traveling to a place near Milwaukee?

Book flights to Milwaukee if you plan to visit one of these locations
Sheboygan
New Berlin
Oak Creek
Wauwatosa

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Alternative routes for Ontario to Milwaukee

See prices for flight routes from nearby airports that may be better suited for you.
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