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Cheap flights from Ontario to Milwaukee from C$ 293

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 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — MKE
10 May — 17 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ontario to Milwaukee

Enter your travel dates to find the best prices.

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 10 April 2026.

Wed 6/511:33 a.m.
YYZ
-
MKE
1 stop7h 27m
American Airlines
Wed 13/58:11 a.m.
MKE
-
YYZ
1 stop14h 18m
American Airlines
Deal found 8/4C$ 540
Thu 30/46:15 a.m.
YYZ
-
MKE
1 stop10h 41m
American Airlines
Tue 5/56:40 p.m.
MKE
-
YYZ
1 stop15h 13m
American Airlines
Deal found 8/4C$ 548
Tue 26/55:20 p.m.
YOW
-
MKE
1 stop6h 04m
United Airlines
Thu 28/51:30 p.m.
MKE
-
YOW
1 stop7h 05m
United Airlines
Deal found 5/4C$ 549
Sat 23/57:20 a.m.
YYZ
-
MKE
1 stop13h 33m
American Airlines
Sat 30/57:30 a.m.
MKE
-
YYZ
1 stop14h 54m
American Airlines
Deal found 8/4C$ 558
Sat 23/53:10 p.m.
YOW
-
MKE
2 stops8h 14m
United Airlines
Sat 30/512:15 p.m.
MKE
-
YOW
2 stops8h 50m
United Airlines
Deal found 8/4C$ 571
Sat 23/57:45 a.m.
YYZ
-
MKE
1 stop25h 16m
Multiple Airlines
Sat 30/512:29 p.m.
MKE
-
YYZ
2 stops34h 06m
Multiple Airlines
Deal found 8/4C$ 585
Wed 13/56:15 a.m.
YYZ
-
MKE
1 stop8h 08m
American Airlines
Fri 15/56:40 p.m.
MKE
-
YYZ
1 stop15h 13m
American Airlines
Deal found 8/4C$ 588
Tue 2/66:05 a.m.
YOW
-
MKE
2 stops9h 09m
United Airlines
Sat 6/61:30 p.m.
MKE
-
YOW
1 stop7h 05m
United Airlines
Deal found 8/4C$ 595
Mon 18/59:50 a.m.
YYZ
-
MKE
1 stop24h 11m
Multiple Airlines
Tue 26/58:46 a.m.
MKE
-
YYZ
2 stops36h 09m
Multiple Airlines
Deal found 9/4C$ 613
Thu 21/57:15 a.m.
YYZ
-
MKE
1 stop14h 49m
American Airlines
Thu 28/57:30 a.m.
MKE
-
YYZ
1 stop9h 14m
American Airlines
Deal found 6/4C$ 631
Sat 23/512:30 p.m.
YUL
-
MKE
1 stop9h 34m
American Airlines
Sat 30/57:30 a.m.
MKE
-
YUL
1 stop8h 23m
American Airlines
Deal found 8/4C$ 639
Sat 9/56:15 a.m.
YYZ
-
MKE
1 stop10h 41m
American Airlines
Sun 10/51:53 p.m.
MKE
-
YYZ
1 stop8h 36m
American Airlines
Deal found 5/4C$ 643

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 10 April 2026.

Round-trip from

C$ 540

One-way from

C$ 293
American Airlines
  • American Airlines
  • 6/5-13/5
  • 2 total stops
  • 21h 45m total
  • Ontario to Milwaukee
Search Deals
American Airlines
  • American Airlines
  • 6/5
  • 1 total stop
  • 10h 41m total
  • Ontario to Milwaukee
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 629,999 searches. Data last updated 10 April 2026.
Use the filters below to find and compare flights from Ontario to Milwaukee that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OttawaMilwaukee

YOW - MKE

YOWMKE

Ottawa

Tue 26/5

5:20 p.m.-10:24 p.m.

1 stop6h 04m

Milwaukee-Mitchell

Thu 28/5

1:30 p.m.-9:35 p.m.

1 stop7h 05m

C$ 549

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Sat 23/5

7:20 a.m.-7:53 p.m.

1 stop13h 33m

Milwaukee-Mitchell

Sat 30/5

7:30 a.m.-11:24 p.m.

1 stop14h 54m

C$ 558

OttawaMilwaukee

YOW - MKE

YOWMKE

Ottawa

Tue 2/6

6:05 a.m.-2:14 p.m.

2 stops9h 09m

Milwaukee-Mitchell

Sat 6/6

12:15 p.m.-9:35 p.m.

1 stop8h 20m

C$ 571

OttawaMilwaukee

YOW - MKE

YOWMKE

Ottawa

Sat 23/5

3:10 p.m.-10:24 p.m.

2 stops8h 14m

Milwaukee-Mitchell

Sat 30/5

12:15 p.m.-10:05 p.m.

2 stops8h 50m

C$ 571

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Wed 27/5

6:10 a.m.-2:14 p.m.

1 stop9h 04m

Milwaukee-Mitchell

Sat 30/5

10:38 a.m.-5:30 p.m.

1 stop5h 52m

C$ 646

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Fri 21/8

6:00 a.m.-12:26 p.m.

1 stop7h 26m

Milwaukee-Mitchell

Tue 1/9

1:00 p.m.-11:10 p.m.

1 stop9h 10m

C$ 647

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Tue 14/7

5:14 p.m.-8:50 a.m.

1 stop16h 36m

Milwaukee-Mitchell

Fri 17/7

6:59 p.m.-11:40 p.m.

1 stop27h 41m

C$ 652

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Sat 2/5

6:00 a.m.-1:14 p.m.

1 stop8h 14m

Milwaukee-Mitchell

Wed 6/5

11:00 a.m.-6:51 p.m.

1 stop6h 51m

C$ 668

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Fri 1/5

12:30 p.m.-10:00 p.m.

1 stop10h 30m

Milwaukee-Mitchell

Mon 4/5

6:40 p.m.-11:44 a.m.

1 stop16h 04m

C$ 675

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Fri 24/4

11:33 a.m.-11:40 p.m.

1 stop13h 07m

Milwaukee-Mitchell

Mon 27/4

6:40 p.m.-10:53 a.m.

1 stop15h 13m

C$ 677

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/4

Showing 1-10 of 43 resultsSorted by cheapest first
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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, June is the cheapest month in which you can book a flight from Region of Ontario to Milwaukee (average of C$ 112). Flying from Region of Ontario to Milwaukee in March is currently the most expensive (average of C$ 261). 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?

    Located just 10.3 km from the city centre, Milwaukee-Mitchell (MKE) is the airport most travelers will use when flying to Milwaukee from Ontario.

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

    United Airlines, American Airlines, and WestJet can get you from Region of Ontario to Milwaukee in just under 6h 04m. Your travel time can differ by up to 7h 29m. Region of Ontario and Milwaukee are separated by a distance of 1009 km. Both multi-stop and direct flights can be found to your destination and back.

  • 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 Montreal Pierre Elliott Trudeau Intl - Milwaukee-Mitchell or Ottawa - 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, June is the cheapest month in which you can book a flight from Region of Ontario to Milwaukee (average of C$ 112). Flying from Region of Ontario to Milwaukee in March is currently the most expensive (average of C$ 261). 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

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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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Top 2 airlines flying from Ontario to Milwaukee

Discover the top 2 airlines that operate flights from Ontario to Milwaukee. 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 629,999 searches. Data last updated 10 April 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 465AverageC$ 778FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 674AverageC$ 832FlexibilityNo cancel feeOn-time60%
Search WestJet flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ontario to Milwaukee?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Milwaukee from Ontario today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Ontario to Milwaukee?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Ontario to Milwaukee for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Ontario to Milwaukee with no change fees?

Need flexible booking options for your flight to Milwaukee from Ontario? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Ontario to Milwaukee become cheaper?

Yes, Cheapflights offers price alerts on Ontario to Milwaukee flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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