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Cheap flights from Ontario to Milwaukee from C$ 278

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 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — MKE
19 Dec — 26 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 19 November 2025.

Wed 17/126:00 a.m.YOW - MKE
1 stop5h 44mUnited Airlines
Wed 24/123:48 p.m.MKE - YOW
2 stops7h 06mUnited Airlines
Deal found 19/11C$ 421
Sat 22/117:10 a.m.YYZ - MKE
1 stop29h 30mMultiple Airlines
Sun 23/117:43 p.m.MKE - YYZ
1 stop27h 28mMultiple Airlines
Deal found 17/11C$ 512
Fri 5/126:24 p.m.YYZ - MKE
1 stop17h 19mAmerican Airlines
Mon 8/126:28 p.m.MKE - YYZ
1 stop15h 28mAmerican Airlines
Deal found 17/11C$ 526
Sun 14/127:10 a.m.YYZ - MKE
1 stop27h 29mMultiple Airlines
Thu 18/128:15 p.m.MKE - YYZ
1 stop17h 05mMultiple Airlines
Deal found 16/11C$ 578
Fri 5/127:15 a.m.YYZ - MKE
2 stops10h 54mMultiple Airlines
Mon 8/1210:34 a.m.MKE - YYZ
1 stop12h 37mMultiple Airlines
Deal found 17/11C$ 610
Tue 9/127:45 p.m.YYZ - MKE
2 stops38h 54mMultiple Airlines
Thu 18/128:15 p.m.MKE - YYZ
1 stop17h 05mMultiple Airlines
Deal found 18/11C$ 614
Sun 7/127:10 a.m.YYZ - MKE
1 stop27h 29mMultiple Airlines
Tue 9/123:51 p.m.MKE - YYZ
1 stop22h 44mMultiple Airlines
Deal found 17/11C$ 621
Tue 9/126:00 a.m.YYZ - MKE
1 stop12h 16mAmerican Airlines
Thu 18/126:00 a.m.MKE - YYZ
1 stop14h 26mAmerican Airlines
Deal found 18/11C$ 625
Thu 27/116:00 a.m.YUL - MKE
1 stop7h 42mDelta
Tue 2/124:52 p.m.MKE - YUL
1 stop5h 40mDelta
Deal found 17/11C$ 632
Mon 15/129:35 a.m.YYZ - MKE
2 stops30h 20mMultiple Airlines
Mon 22/128:15 p.m.MKE - YYZ
1 stop17h 05mMultiple Airlines
Deal found 17/11C$ 635
Mon 22/125:15 p.m.YYZ - MKE
1 stop27h 05mMultiple Airlines
Sun 28/128:15 p.m.MKE - YYZ
1 stop14h 28mMultiple Airlines
Deal found 19/11C$ 663
Wed 17/1211:10 a.m.YOW - MKE
1 stop4h 58mAir Canada
Wed 24/123:48 p.m.MKE - YOW
1 stop4h 30mAir Canada
Deal found 19/11C$ 673

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 19 November 2025.

Round-trip from

C$ 349

One-way from

C$ 278

Popular in

August

Cheapest in

January

Average price

C$ 817
16/1-19/1
  • 16/1-19/1
  • 2 total stops
  • 30h 00m total
  • Ontario to Milwaukee
Search Deals
10/1
  • 10/1
  • 1 total stop
  • 26h 30m total
  • Ontario to Milwaukee
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 144 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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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 19 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

Thu 8/1

5:11 p.m.-9:59 p.m.

1 stop5h 48m

Milwaukee-Mitchell

Mon 12/1

11:30 a.m.-9:18 p.m.

1 stop8h 48m

C$ 416

OttawaMilwaukee

YOW - MKE

YOWMKE

Ottawa

Tue 14/4

5:25 p.m.-8:48 p.m.

1 stop4h 23m

Milwaukee-Mitchell

Sat 18/4

3:00 p.m.-9:56 p.m.

1 stop5h 56m

C$ 421

OttawaMilwaukee

YOW - MKE

YOWMKE

Ottawa

Wed 17/12

6:00 a.m.-3:08 p.m.

2 stops10h 08m

Milwaukee-Mitchell

Wed 24/12

3:48 p.m.-11:54 p.m.

2 stops7h 06m

C$ 421

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Fri 16/1

7:15 a.m.-6:52 p.m.

1 stop12h 37m

Milwaukee-Mitchell

Mon 19/1

7:42 p.m.-7:02 p.m.

2 stops22h 20m

C$ 442

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Tue 6/1

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

1 stop13h 05m

Milwaukee-Mitchell

Sat 17/1

7:42 p.m.-2:05 p.m.

1 stop17h 23m

C$ 464

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Sat 14/2

3:55 p.m.-11:42 a.m.

1 stop20h 47m

Milwaukee-Mitchell

Sat 28/2

6:00 a.m.-3:09 p.m.

1 stop8h 09m

C$ 478

OttawaMilwaukee

YOW - MKE

YOWMKE

Ottawa

Tue 14/4

5:45 a.m.-12:32 p.m.

2 stops7h 47m

Milwaukee-Mitchell

Sat 18/4

11:40 a.m.-10:16 p.m.

2 stops9h 36m

C$ 494

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Fri 5/12

6:24 p.m.-10:43 a.m.

1 stop17h 19m

Milwaukee-Mitchell

Mon 8/12

6:28 p.m.-10:56 a.m.

1 stop15h 28m

C$ 526

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Sun 14/12

7:10 a.m.-9:39 a.m.

1 stop27h 29m

Milwaukee-Mitchell

Thu 18/12

3:27 p.m.-6:47 a.m.

2 stops14h 20m

C$ 609

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Fri 5/12

7:15 a.m.-5:09 p.m.

2 stops10h 54m

Milwaukee-Mitchell

Mon 8/12

10:34 a.m.-12:11 a.m.

1 stop12h 37m

C$ 610

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/11

Showing 1-10 of 35 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 February is currently the most expensive (average of C$ 266). 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 19 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.

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 5h 48m. Your travel time can differ by up to 14h 59m. 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$ 116). Flying from Region of Ontario to Milwaukee in February is currently the most expensive (average of C$ 266). 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 19 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

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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