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Cheap flights from Ontario to Milwaukee from C$ 316

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 15/6. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — MKE
22 Jun — 29 Jun1
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 23 May 2026.

Wed 17/67:25 a.m.
YYZ
-
MKE
1 stop11h 55m
American Airlines
Tue 23/610:00 a.m.
MKE
-
YYZ
1 stop12h 29m
American Airlines
Deal found 19/5C$ 599
Mon 8/611:39 a.m.
YYZ
-
MKE
1 stop11h 45m
American Airlines
Wed 10/65:00 a.m.
MKE
-
YYZ
1 stop8h 33m
American Airlines
Deal found 20/5C$ 638
Sat 6/63:13 p.m.
YYZ
-
MKE
1 stop8h 16m
American Airlines
Sat 13/65:00 a.m.
MKE
-
YYZ
1 stop11h 44m
American Airlines
Deal found 20/5C$ 653
Sat 4/77:20 a.m.
YYZ
-
MKE
1 stop12h 08m
American Airlines
Sat 11/79:13 a.m.
MKE
-
YYZ
1 stop7h 26m
American Airlines
Deal found 20/5C$ 672
Thu 2/75:50 p.m.
YOW
-
MKE
1 stop6h 44m
United Airlines
Thu 9/76:20 a.m.
MKE
-
YOW
1 stop14h 15m
United Airlines
Deal found 18/5C$ 675
Wed 1/711:23 a.m.
YUL
-
MKE
1 stop13h 11m
United Airlines
Tue 14/75:00 a.m.
MKE
-
YUL
2 stops8h 40m
United Airlines
Deal found 19/5C$ 683
Wed 10/66:00 a.m.
YUL
-
MKE
1 stop7h 35m
Delta
Tue 16/67:00 a.m.
MKE
-
YUL
2 stops15h 55m
Delta
Deal found 21/5C$ 690
Wed 17/61:15 p.m.
YYZ
-
MKE
1 stop7h 43m
American Airlines
Wed 24/65:00 a.m.
MKE
-
YYZ
1 stop8h 33m
American Airlines
Deal found 20/5C$ 690
Fri 31/79:45 a.m.
YUL
-
MKE
1 stop13h 44m
Air Canada
Sun 2/87:20 a.m.
MKE
-
YUL
1 stop6h 08m
Air Canada
Deal found 20/5C$ 691
Sat 13/66:00 a.m.
YUL
-
MKE
1 stop5h 09m
United Airlines
Sat 13/61:30 p.m.
MKE
-
YUL
1 stop6h 56m
United Airlines
Deal found 21/5C$ 696
Wed 1/711:23 a.m.
YUL
-
MKE
1 stop13h 11m
United Airlines
Sun 5/77:20 a.m.
MKE
-
YUL
1 stop13h 06m
United Airlines
Deal found 20/5C$ 698
Tue 21/74:55 p.m.
YUL
-
MKE
1 stop15h 05m
United Airlines
Tue 28/77:20 a.m.
MKE
-
YUL
2 stops11h 25m
United Airlines
Deal found 19/5C$ 700

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 23 May 2026.

Round-trip from

C$ 599

One-way from

C$ 316
American Airlines
  • American Airlines
  • 17/6-23/6
  • 2 total stops
  • 24h 24m total
  • Ontario to Milwaukee
Search Deals
15/6
  • 15/6
  • 1 total stop
  • 25h 13m 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 23 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

Thu 2/7

5:50 p.m.-11:34 p.m.

1 stop6h 44m

Milwaukee-Mitchell

Thu 9/7

6:20 a.m.-9:35 p.m.

1 stop14h 15m

C$ 675

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Thu 2/7

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

1 stop7h 45m

Milwaukee-Mitchell

Thu 9/7

1:20 p.m.-11:25 p.m.

1 stop9h 05m

C$ 683

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Wed 1/7

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

1 stop13h 11m

Milwaukee-Mitchell

Tue 14/7

5:00 a.m.-2:40 p.m.

2 stops8h 40m

C$ 683

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Tue 21/7

12:47 p.m.-6:00 p.m.

1 stop6h 13m

Milwaukee-Mitchell

Tue 28/7

6:00 a.m.-1:39 p.m.

1 stop6h 39m

C$ 683

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Sat 4/7

6:00 a.m.-5:35 p.m.

1 stop12h 35m

Milwaukee-Mitchell

Sat 11/7

3:11 p.m.-9:26 p.m.

1 stop5h 15m

C$ 683

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Wed 10/6

6:00 a.m.-12:35 p.m.

1 stop7h 35m

Milwaukee-Mitchell

Tue 16/6

7:00 a.m.-11:55 p.m.

2 stops15h 55m

C$ 690

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Fri 31/7

9:45 a.m.-10:29 p.m.

1 stop13h 44m

Milwaukee-Mitchell

Sun 2/8

7:20 a.m.-2:28 p.m.

1 stop6h 08m

C$ 691

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Wed 1/7

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

1 stop13h 11m

Milwaukee-Mitchell

Sun 5/7

7:20 a.m.-9:26 p.m.

1 stop13h 06m

C$ 698

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Tue 21/7

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

1 stop15h 05m

Milwaukee-Mitchell

Tue 28/7

7:20 a.m.-7:45 p.m.

2 stops11h 25m

C$ 700

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Wed 10/6

6:00 a.m.-12:35 p.m.

1 stop7h 35m

Milwaukee-Mitchell

Mon 15/6

6:49 p.m.-11:28 p.m.

1 stop3h 39m

C$ 704

Flights are sorted by cheapest round-trip flights first.

Deals found on 19/5

Showing 1-10 of 51 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 December is currently the most expensive (average of C$ 770). 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 Air Canada can get you from Region of Ontario to Milwaukee in just under 4h 52m. Your travel time can differ by up to 2h 53m. 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 December is currently the most expensive (average of C$ 770). 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 23 May 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 316AverageC$ 904FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 676AverageC$ 842FlexibilityNo 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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