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Cheap flights from Ontario to Milwaukee from C$ 273

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 23/11. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — MKE
12 Dec — 19 Dec1
1 adult
1 adult, Economy, 0 bags

Find 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 12 November 2025.

Mon 15/126:20 a.m.YOW - MKE
1 stop6h 09mUnited Airlines
Tue 16/128:40 a.m.MKE - YOW
2 stops6h 52mUnited Airlines
Deal found 12/11C$ 421
Sat 6/124:44 p.m.YYZ - MKE
1 stop7h 21mAmerican Airlines
Mon 8/125:00 a.m.MKE - YYZ
1 stop11h 44mAmerican Airlines
Deal found 10/11C$ 487
Sun 23/117:10 a.m.YYZ - MKE
1 stop12h 38mMultiple Airlines
Fri 5/126:09 p.m.MKE - YYZ
1 stop29h 02mMultiple Airlines
Deal found 11/11C$ 526
Mon 24/1112:50 p.m.YYZ - MKE
2 stops31h 19mMultiple Airlines
Fri 5/126:09 p.m.MKE - YYZ
1 stop29h 02mMultiple Airlines
Deal found 11/11C$ 540
Sat 6/127:00 a.m.YYZ - MKE
3 stops27h 39mMultiple Airlines
Mon 8/1210:34 a.m.MKE - YYZ
1 stop8h 26mMultiple Airlines
Deal found 10/11C$ 548
Sun 23/117:10 a.m.YYZ - MKE
1 stop12h 38mMultiple Airlines
Sun 30/1112:35 p.m.MKE - YYZ
1 stop30h 25mMultiple Airlines
Deal found 11/11C$ 558
Wed 3/125:15 p.m.YYZ - MKE
1 stop17h 24mMultiple Airlines
Fri 5/126:09 p.m.MKE - YYZ
1 stop29h 02mMultiple Airlines
Deal found 11/11C$ 559
Mon 24/1112:50 p.m.YYZ - MKE
2 stops31h 19mMultiple Airlines
Sun 30/1112:35 p.m.MKE - YYZ
1 stop30h 25mMultiple Airlines
Deal found 11/11C$ 572
Tue 9/126:00 a.m.YUL - MKE
1 stop7h 32mDelta
Tue 16/129:40 a.m.MKE - YUL
1 stop5h 15mDelta
Deal found 10/11C$ 610
Sat 13/127:14 a.m.YUL - MKE
1 stop11h 50mAmerican Airlines
Tue 16/128:05 a.m.MKE - YUL
1 stop6h 05mAmerican Airlines
Deal found 11/11C$ 618
Mon 15/126:24 p.m.YYZ - MKE
1 stop14h 34mAmerican Airlines
Sun 4/17:45 a.m.MKE - YYZ
1 stop8h 59mAmerican Airlines
Deal found 10/11C$ 621
Thu 25/127:08 a.m.YUL - MKE
2 stops11h 41mAmerican Airlines
Thu 1/18:08 p.m.MKE - YUL
1 stop18h 02mAmerican Airlines
Deal found 9/11C$ 625

Cheap flight deals from Ontario to Milwaukee

Keep the following information in mind while searching for Ontario to Milwaukee flight deals. Data was last updated 12 November 2025.

Round-trip from

C$ 421

One-way from

C$ 273

Popular in

August

Cheapest in

January

Average price

C$ 817
United Airlines
  • United Airlines
  • 15/12-16/12
  • 2 total stops
  • 9h 41m total
  • Ontario to Milwaukee
Search Deals
23/11
  • 23/11
  • 1 total stop
  • 12h 38m total
  • Ontario to Milwaukee
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 148 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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 12 November 2025.
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

Mon 15/12

5:14 p.m.-9:47 p.m.

1 stop5h 33m

Milwaukee-Mitchell

Tue 16/12

12:04 p.m.-5:12 p.m.

1 stop4h 08m

C$ 421

OttawaMilwaukee

YOW - MKE

YOWMKE

Ottawa

Tue 14/4

2:48 p.m.-10:45 p.m.

2 stops8h 57m

Milwaukee-Mitchell

Sat 18/4

11:40 a.m.-9:56 p.m.

2 stops9h 16m

C$ 421

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Sat 6/12

7:00 a.m.-9:39 a.m.

3 stops27h 39m

Milwaukee-Mitchell

Mon 8/12

10:34 a.m.-8:00 p.m.

1 stop8h 26m

C$ 548

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Thu 27/11

6:00 a.m.-12:42 p.m.

1 stop7h 42m

Milwaukee-Mitchell

Wed 3/12

4:52 p.m.-11:32 p.m.

1 stop5h 40m

C$ 610

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Mon 24/11

12:59 p.m.-6:46 p.m.

1 stop6h 47m

Milwaukee-Mitchell

Mon 1/12

6:14 a.m.-10:40 p.m.

1 stop15h 26m

C$ 610

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Tue 9/12

6:00 a.m.-12:32 p.m.

1 stop7h 32m

Milwaukee-Mitchell

Tue 16/12

9:40 a.m.-3:55 p.m.

1 stop5h 15m

C$ 610

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Tue 9/12

4:45 p.m.-10:30 p.m.

1 stop6h 45m

Milwaukee-Mitchell

Tue 16/12

7:00 a.m.-9:42 p.m.

2 stops13h 42m

C$ 610

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Sat 13/12

7:00 a.m.-3:08 p.m.

2 stops9h 08m

Milwaukee-Mitchell

Tue 16/12

12:04 p.m.-9:42 p.m.

2 stops8h 38m

C$ 610

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Sat 13/12

7:14 a.m.-6:04 p.m.

1 stop11h 50m

Milwaukee-Mitchell

Tue 16/12

8:05 a.m.-3:10 p.m.

1 stop6h 05m

C$ 618

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Mon 15/12

6:24 p.m.-7:58 a.m.

1 stop14h 34m

Milwaukee-Mitchell

Sun 4/1

7:45 a.m.-5:44 p.m.

1 stop8h 59m

C$ 621

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/11

Showing 1-10 of 38 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, June is the cheapest month in which you can book a flight from Region of Ontario to Milwaukee (average of C$ 116). Flying from Region of Ontario to Milwaukee in December is currently the most expensive (average of C$ 269). 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.

What is the cheapest time of day to fly from ON to MKE?

Find hourly flight availability from Ontario to Milwaukee. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 November 2025.

One of the essential ways to save on airfare from Region of Ontario to Milwaukee is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 56% on airfare.

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 5h 33m. Your travel time can differ by up to 2h 09m. 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 cheapest airlines to fly from Region of Ontario to Milwaukee one-way?

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at C$ 369. Delta flights start at C$ 412 while deals on WestJet start at C$ 491 one-way.

  • 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$ 116). Flying from Region of Ontario to Milwaukee in December is currently the most expensive (average of C$ 269). 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 4 airlines flying from Ontario to Milwaukee

Discover the top 4 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 12 November 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 297AverageC$ 560FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 398AverageC$ 751FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapestC$ 406AverageC$ 431FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
WestJetCheapestC$ 498AverageC$ 711FlexibilityNo cancel feeOn-time60%
Search WestJet flights

Fly with Cheapflights

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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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