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Cheap flights from Ontario to Milwaukee from C$ 359

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 19/8. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — MKE
30 Jun — 7 Jul1
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 31 May 2026.

Wed 9/96:00 a.m.
YOW
-
MKE
2 stops10h 11m
United Airlines
Sat 12/93:52 p.m.
MKE
-
YOW
1 stop4h 43m
United Airlines
Deal found 27/5C$ 560
Wed 8/71:17 p.m.
YYZ
-
MKE
1 stop7h 29m
American Airlines
Tue 14/71:15 p.m.
MKE
-
YYZ
1 stop9h 14m
American Airlines
Deal found 30/5C$ 637
Wed 8/77:17 a.m.
YYZ
-
MKE
1 stop13h 29m
American Airlines
Fri 17/77:25 a.m.
MKE
-
YYZ
1 stop14h 56m
American Airlines
Deal found 30/5C$ 652
Sun 12/77:20 a.m.
YYZ
-
MKE
1 stop13h 40m
American Airlines
Tue 14/78:43 a.m.
MKE
-
YYZ
1 stop7h 51m
American Airlines
Deal found 29/5C$ 657
Sat 20/65:25 p.m.
YOW
-
MKE
1 stop4h 31m
United Airlines
Sat 27/69:20 a.m.
MKE
-
YOW
1 stop6h 47m
United Airlines
Deal found 26/5C$ 658
Wed 17/67:25 a.m.
YYZ
-
MKE
1 stop13h 33m
American Airlines
Sun 21/67:00 a.m.
MKE
-
YYZ
1 stop14h 30m
American Airlines
Deal found 27/5C$ 663
Sun 21/67:25 a.m.
YYZ
-
MKE
1 stop11h 55m
American Airlines
Wed 24/65:00 a.m.
MKE
-
YYZ
1 stop8h 33m
American Airlines
Deal found 28/5C$ 670
Mon 22/66:24 p.m.
YYZ
-
MKE
1 stop14h 18m
American Airlines
Fri 26/610:00 a.m.
MKE
-
YYZ
1 stop12h 23m
American Airlines
Deal found 27/5C$ 674
Fri 25/97:15 p.m.
YYZ
-
MKE
1 stop13h 46m
American Airlines
Mon 28/97:30 a.m.
MKE
-
YYZ
1 stop10h 05m
American Airlines
Deal found 27/5C$ 681
Wed 19/89:45 a.m.
YUL
-
MKE
1 stop6h 27m
Air Canada
Mon 24/86:15 a.m.
MKE
-
YUL
1 stop10h 15m
Air Canada
Deal found 28/5C$ 687
Tue 16/66:29 p.m.
YYZ
-
MKE
1 stop25h 54m
Delta
Sat 20/66:20 a.m.
MKE
-
YYZ
1 stop4h 15m
Delta
Deal found 27/5C$ 694
Sat 20/65:25 p.m.
YOW
-
MKE
1 stop6h 04m
Air Canada
Sat 27/69:20 a.m.
MKE
-
YOW
2 stops9h 32m
Air Canada
Deal found 26/5C$ 705

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 31 May 2026.

Round-trip from

C$ 560

One-way from

C$ 359
United Airlines
  • United Airlines
  • 9/9-12/9
  • 3 total stops
  • 14h 54m total
  • Ontario to Milwaukee
Search Deals
American Airlines
  • American Airlines
  • 19/8
  • 1 total stop
  • 13h 39m 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 31 May 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

Wed 9/9

6:00 a.m.-3:11 p.m.

3 stops10h 11m

Milwaukee-Mitchell

Sat 12/9

3:52 p.m.-11:54 p.m.

2 stops7h 02m

C$ 560

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Tue 16/6

6:29 p.m.-7:23 p.m.

1 stop25h 54m

Milwaukee-Mitchell

Sat 20/6

6:20 a.m.-11:35 a.m.

1 stop4h 15m

C$ 694

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Sun 1/11

9:45 a.m.-12:27 p.m.

1 stop3h 42m

Milwaukee-Mitchell

Sat 7/11

7:00 a.m.-11:00 p.m.

2 stops15h 00m

C$ 717

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Fri 17/7

7:51 a.m.-5:17 p.m.

1 stop10h 26m

Milwaukee-Mitchell

Sat 25/7

7:40 a.m.-4:54 p.m.

1 stop8h 14m

C$ 732

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Thu 9/7

11:23 a.m.-11:34 p.m.

1 stop13h 11m

Milwaukee-Mitchell

Sun 12/7

7:50 a.m.-5:30 p.m.

1 stop8h 40m

C$ 732

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Wed 19/8

5:10 p.m.-8:18 p.m.

1 stop4h 08m

Milwaukee-Mitchell

Sun 23/8

1:27 p.m.-11:30 p.m.

1 stop9h 03m

C$ 732

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Tue 7/7

11:23 a.m.-11:34 p.m.

1 stop13h 11m

Milwaukee-Mitchell

Tue 14/7

5:00 a.m.-10:40 a.m.

1 stop4h 40m

C$ 732

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Sat 29/8

6:00 a.m.-12:45 p.m.

1 stop7h 45m

Milwaukee-Mitchell

Tue 1/9

1:27 p.m.-11:30 p.m.

1 stop9h 03m

C$ 732

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Fri 24/7

4:55 p.m.-7:00 a.m.

1 stop15h 05m

Milwaukee-Mitchell

Sat 1/8

7:50 a.m.-5:30 p.m.

1 stop8h 40m

C$ 732

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Thu 20/8

6:00 a.m.-12:45 p.m.

1 stop7h 45m

Milwaukee-Mitchell

Sun 23/8

4:47 p.m.-11:30 p.m.

1 stop5h 43m

C$ 732

Flights are sorted by cheapest round-trip flights first.

Deals found on 31/5

Showing 1-10 of 38 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, November is the cheapest month in which you can book a flight from Region of Ontario to Milwaukee (average of C$ 246). Flying from Region of Ontario to Milwaukee in June is currently the most expensive (average of C$ 948). 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, Delta, and American Airlines can get you from Region of Ontario to Milwaukee in just under 10h 11m. Your travel time can differ by up to 15h 43m. 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, November is the cheapest month in which you can book a flight from Region of Ontario to Milwaukee (average of C$ 246). Flying from Region of Ontario to Milwaukee in June is currently the most expensive (average of C$ 948). 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.
Pearson Intl to O'Hare Intl flights
Pierre Elliott Trudeau Intl to O'Hare Intl flights
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Saskatoon to Minneapolis flights
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Regina to Minneapolis flights
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St. John's to O'Hare Intl flights
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Pearson Intl to Duluth flights
London to O'Hare Intl flights
Victoria to Minneapolis flights
Edmonton to Green Bay flights
Ottawa to Madison flights
Regina to Milwaukee flights
Edmonton to Appleton flights
St John to O'Hare Intl flights
Pearson Intl to Green Bay flights
Moncton to O'Hare Intl flights
Comox to O'Hare Intl flights

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 31 May 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 315AverageC$ 904FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 676AverageC$ 841FlexibilityNo 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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