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Cheap flights from Ontario to Milwaukee from C$ 341

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 8/6. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — MKE
10 Jun — 17 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 11 May 2026.

Mon 1/67:20 a.m.
YYZ
-
MKE
1 stop13h 37m
American Airlines
Tue 2/61:44 p.m.
MKE
-
YYZ
1 stop8h 40m
American Airlines
Deal found 10/5C$ 609
Wed 24/67:25 a.m.
YYZ
-
MKE
1 stop11h 55m
American Airlines
Wed 1/76:13 a.m.
MKE
-
YYZ
1 stop10h 31m
American Airlines
Deal found 10/5C$ 622
Wed 19/86:25 a.m.
YOW
-
MKE
1 stop4h 35m
United Airlines
Sat 22/81:19 p.m.
MKE
-
YOW
1 stop7h 16m
United Airlines
Deal found 10/5C$ 635
Sat 25/73:14 p.m.
YYZ
-
MKE
1 stop8h 07m
American Airlines
Wed 29/75:02 a.m.
MKE
-
YYZ
1 stop11h 32m
American Airlines
Deal found 10/5C$ 654
Fri 10/77:17 a.m.
YYZ
-
MKE
1 stop13h 42m
American Airlines
Tue 14/75:02 a.m.
MKE
-
YYZ
1 stop8h 32m
American Airlines
Deal found 11/5C$ 655
Sun 24/57:20 a.m.
YYZ
-
MKE
1 stop11h 55m
American Airlines
Sun 31/57:30 a.m.
MKE
-
YYZ
1 stop14h 54m
American Airlines
Deal found 10/5C$ 669
Thu 9/71:17 p.m.
YYZ
-
MKE
1 stop8h 14m
American Airlines
Sun 12/75:02 a.m.
MKE
-
YYZ
1 stop11h 32m
American Airlines
Deal found 7/5C$ 671
Tue 2/66:05 a.m.
YOW
-
MKE
1 stop5h 04m
Lufthansa
Wed 24/610:38 a.m.
MKE
-
YOW
2 stops12h 16m
Lufthansa
Deal found 11/5C$ 681
Sat 23/59:30 a.m.
YUL
-
MKE
1 stop9h 19m
Delta
Wed 27/510:59 a.m.
MKE
-
YUL
1 stop6h 54m
Delta
Deal found 6/5C$ 682
Tue 16/611:39 a.m.
YYZ
-
MKE
1 stop7h 41m
American Airlines
Sat 19/93:03 p.m.
MKE
-
YYZ
1 stop7h 12m
American Airlines
Deal found 6/5C$ 703
Fri 12/61:15 p.m.
YYZ
-
MKE
1 stop8h 50m
American Airlines
Thu 18/610:00 a.m.
MKE
-
YYZ
1 stop12h 23m
American Airlines
Deal found 8/5C$ 706
Sat 23/55:25 p.m.
YOW
-
MKE
1 stop4h 31m
United Airlines
Wed 27/512:05 p.m.
MKE
-
YOW
2 stops9h 00m
United Airlines
Deal found 6/5C$ 706

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 11 May 2026.

Round-trip from

C$ 609

One-way from

C$ 341
American Airlines
  • American Airlines
  • 1/6-2/6
  • 2 total stops
  • 22h 17m total
  • Ontario to Milwaukee
Search Deals
American Airlines
  • American Airlines
  • 8/6
  • 1 total stop
  • 14h 18m 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 11 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

Tue 27/10

12:30 p.m.-6:39 p.m.

2 stops7h 09m

Milwaukee-Mitchell

Thu 29/10

6:00 a.m.-4:15 p.m.

2 stops9h 15m

C$ 635

OttawaMilwaukee

YOW - MKE

YOWMKE

Ottawa

Wed 19/8

6:25 a.m.-10:00 a.m.

1 stop4h 35m

Milwaukee-Mitchell

Sat 22/8

1:19 p.m.-9:35 p.m.

1 stop7h 16m

C$ 635

OttawaMilwaukee

YOW - MKE

YOWMKE

Ottawa

Wed 26/8

6:05 a.m.-4:10 p.m.

2 stops11h 05m

Milwaukee-Mitchell

Sat 29/8

1:19 p.m.-9:35 p.m.

1 stop7h 16m

C$ 635

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Sun 24/5

7:20 a.m.-6:15 p.m.

1 stop11h 55m

Milwaukee-Mitchell

Sun 31/5

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

1 stop14h 54m

C$ 669

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Sat 23/5

9:30 a.m.-5:49 p.m.

1 stop9h 19m

Milwaukee-Mitchell

Wed 27/5

10:59 a.m.-6:53 p.m.

1 stop6h 54m

C$ 682

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Tue 16/6

11:39 a.m.-6:20 p.m.

1 stop7h 41m

Milwaukee-Mitchell

Sat 19/9

3:03 p.m.-11:15 p.m.

1 stop7h 12m

C$ 703

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Fri 12/6

1:15 p.m.-9:05 p.m.

1 stop8h 50m

Milwaukee-Mitchell

Thu 18/6

10:00 a.m.-11:23 p.m.

1 stop12h 23m

C$ 706

OttawaMilwaukee

YOW - MKE

YOWMKE

Ottawa

Sat 23/5

2:52 p.m.-8:56 p.m.

2 stops7h 04m

Milwaukee-Mitchell

Wed 27/5

6:20 a.m.-4:38 p.m.

2 stops9h 18m

C$ 706

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Fri 5/6

6:24 p.m.-7:42 a.m.

1 stop14h 18m

Milwaukee-Mitchell

Fri 12/6

6:50 p.m.-10:58 a.m.

1 stop15h 08m

C$ 722

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Thu 5/11

3:52 p.m.-8:00 a.m.

1 stop17h 08m

Milwaukee-Mitchell

Mon 9/11

5:00 a.m.-3:11 p.m.

1 stop9h 11m

C$ 766

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/5

Showing 1-10 of 45 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$ 243). Flying from Region of Ontario to Milwaukee in December is currently the most expensive (average of C$ 763). 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 Delta can get you from Region of Ontario to Milwaukee in just under 7h 09m. Your travel time can differ by up to 4h 46m. 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 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, November is the cheapest month in which you can book a flight from Region of Ontario to Milwaukee (average of C$ 243). Flying from Region of Ontario to Milwaukee in December is currently the most expensive (average of C$ 763). 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 11 May 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 313AverageC$ 896FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 667AverageC$ 828FlexibilityNo 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?

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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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