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Cheap flights from Ontario to Milwaukee from C$ 418

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/1. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — MKE
20 Dec — 27 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 20 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$ 422
Tue 9/126:00 a.m.YOW - MKE
2 stops10h 08mUnited Airlines
Thu 11/127:00 a.m.MKE - YOW
1 stop9h 12mUnited Airlines
Deal found 19/11C$ 490
Wed 3/1211:36 a.m.YYZ - MKE
1 stop7h 23mAmerican Airlines
Wed 10/121:08 p.m.MKE - YYZ
1 stop7h 21mAmerican Airlines
Deal found 19/11C$ 537
Sat 6/124:44 p.m.YYZ - MKE
1 stop7h 21mAmerican Airlines
Mon 8/126:28 p.m.MKE - YYZ
1 stop15h 28mAmerican Airlines
Deal found 19/11C$ 587
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$ 616
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$ 623
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$ 627
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$ 665
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$ 675
Mon 22/125:15 p.m.YYZ - MKE
1 stop27h 05mMultiple Airlines
Mon 29/128:15 p.m.MKE - YYZ
2 stops38h 28mMultiple Airlines
Deal found 19/11C$ 680
Thu 25/129:00 p.m.YYZ - MKE
1 stop19h 13mUnited Airlines
Wed 31/125:00 a.m.MKE - YYZ
1 stop16h 54mUnited Airlines
Deal found 17/11C$ 688
Mon 22/1212:05 p.m.YYZ - MKE
1 stop8h 50mUnited Airlines
Fri 2/17:08 a.m.MKE - YYZ
1 stop14h 46mUnited Airlines
Deal found 19/11C$ 689

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 20 November 2025.

Round-trip from

C$ 378

Popular in

August

Cheapest in

January

Average price

C$ 820
22/1-26/1
  • 22/1-26/1
  • 3 total stops
  • 30h 05m 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
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 20 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$ 418

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$ 422

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$ 422

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Tue 6/1

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

2 stops13h 05m

Milwaukee-Mitchell

Sat 17/1

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

1 stop17h 23m

C$ 471

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$ 480

OttawaMilwaukee

YOW - MKE

YOWMKE

Ottawa

Tue 9/12

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

2 stops10h 08m

Milwaukee-Mitchell

Thu 11/12

7:00 a.m.-5:12 p.m.

1 stop9h 12m

C$ 490

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$ 495

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Sun 4/1

7:10 a.m.-11:13 a.m.

1 stop29h 03m

Milwaukee-Mitchell

Sun 11/1

7:40 p.m.-12:11 a.m.

1 stop27h 31m

C$ 536

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Tue 9/12

7:45 p.m.-9:39 a.m.

2 stops38h 54m

Milwaukee-Mitchell

Thu 18/12

8:15 p.m.-2:20 p.m.

1 stop17h 05m

C$ 616

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Sun 7/12

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

1 stop27h 29m

Milwaukee-Mitchell

Tue 9/12

3:51 p.m.-3:35 p.m.

1 stop22h 44m

C$ 623

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/11

Showing 1-10 of 31 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$ 117). Flying from Region of Ontario to Milwaukee in February is currently the most expensive (average of C$ 267). 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 20 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 and American Airlines 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 cheapest airlines to fly from Region of Ontario to Milwaukee one-way?

    To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at C$ 425. Delta flights start at C$ 450 while deals on WestJet start at C$ 487 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$ 117). Flying from Region of Ontario to Milwaukee in February is currently the most expensive (average of C$ 267). 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 20 November 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 298AverageC$ 562FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 399AverageC$ 754FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapestC$ 408AverageC$ 433FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
WestJetCheapestC$ 499AverageC$ 714FlexibilityNo 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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