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Cheap flights from Ontario to Milwaukee from C$ 283

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 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — MKE
19 Nov — 26 Nov1
1 adult
1 adult, Economy

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 October 2025.

Wed 3/125:14 p.m.YOW - MKE
1 stop6h 16mUnited Airlines
Wed 10/1212:04 p.m.MKE - YOW
1 stop4h 08mUnited Airlines
Deal found 19/10C$ 416
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 19/10C$ 471
Sat 22/116:00 a.m.YYZ - MKE
1 stop13h 29mAmerican Airlines
Mon 24/116:00 a.m.MKE - YYZ
1 stop9h 34mAmerican Airlines
Deal found 20/10C$ 599
Sun 2/115:00 a.m.YUL - MKE
1 stop7h 25mDelta
Sat 8/116:00 a.m.MKE - YUL
1 stop6h 35mDelta
Deal found 19/10C$ 610
Sun 9/111:14 p.m.YYZ - MKE
1 stop20h 01mAmerican Airlines
Sat 15/1112:09 p.m.MKE - YYZ
1 stop21h 43mAmerican Airlines
Deal found 19/10C$ 625
Wed 3/129:35 a.m.YUL - MKE
1 stop8h 44mDelta
Wed 10/129:40 a.m.MKE - YUL
1 stop5h 15mDelta
Deal found 19/10C$ 646
Fri 7/116:00 a.m.YUL - MKE
1 stop7h 25mDelta
Mon 10/116:29 p.m.MKE - YUL
1 stop3h 57mDelta
Deal found 19/10C$ 655
Mon 17/117:00 a.m.YUL - MKE
1 stop9h 09mAmerican Airlines
Mon 24/115:00 a.m.MKE - YUL
1 stop9h 09mAmerican Airlines
Deal found 20/10C$ 659
Mon 27/109:28 a.m.YUL - MKE
1 stop8h 19mDelta
Sun 2/117:16 a.m.MKE - YUL
1 stop3h 46mDelta
Deal found 19/10C$ 676
Tue 18/111:35 p.m.YUL - MKE
2 stops10h 08mUnited Airlines
Tue 25/115:00 a.m.MKE - YUL
2 stops6h 46mUnited Airlines
Deal found 19/10C$ 684
Tue 30/1212:05 p.m.YYZ - MKE
1 stop10h 06mUnited Airlines
Fri 2/16:36 a.m.MKE - YYZ
1 stop10h 58mUnited Airlines
Deal found 19/10C$ 687
Tue 28/107:00 a.m.YUL - MKE
2 stops9h 07mUnited Airlines
Sat 1/118:44 a.m.MKE - YUL
1 stop4h 16mUnited Airlines
Deal found 19/10C$ 688

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 October 2025.

Round-trip from

C$ 416

One-way from

C$ 283

Popular in

August

Cheapest in

February

Average price

C$ 681
United Airlines
  • United Airlines
  • 3/12-10/12
  • 2 total stops
  • 10h 24m total
  • Ontario to Milwaukee
Search Deals
3/12
  • 3/12
  • 1 total stop
  • 17h 42m total
  • Ontario to Milwaukee
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (C$ 202 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 42 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 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 October 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

Wed 3/12

5:14 p.m.-10:30 p.m.

1 stop6h 16m

Milwaukee-Mitchell

Wed 10/12

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

1 stop4h 08m

C$ 416

OttawaMilwaukee

YOW - MKE

YOWMKE

Ottawa

Tue 14/4

1:30 p.m.-6:08 p.m.

1 stop5h 38m

Milwaukee-Mitchell

Sat 18/4

2:24 p.m.-9:14 p.m.

1 stop5h 50m

C$ 421

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Wed 3/12

11:36 a.m.-5:59 p.m.

1 stop7h 23m

Milwaukee-Mitchell

Wed 10/12

1:08 p.m.-9:29 p.m.

1 stop7h 21m

C$ 471

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Tue 18/11

9:26 a.m.-5:19 p.m.

1 stop8h 53m

Milwaukee-Mitchell

Tue 25/11

9:36 a.m.-3:55 p.m.

1 stop5h 19m

C$ 610

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Mon 17/11

7:10 a.m.-11:32 a.m.

1 stop5h 22m

Milwaukee-Mitchell

Mon 24/11

2:42 p.m.-11:42 p.m.

1 stop8h 00m

C$ 610

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Sun 2/11

5:00 a.m.-11:25 a.m.

1 stop7h 25m

Milwaukee-Mitchell

Sat 8/11

6:00 a.m.-1:35 p.m.

1 stop6h 35m

C$ 610

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Tue 18/11

3:00 p.m.-9:59 p.m.

2 stops7h 59m

Milwaukee-Mitchell

Tue 25/11

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

1 stop8h 00m

C$ 610

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Sat 1/11

9:28 a.m.-5:52 p.m.

1 stop9h 24m

Milwaukee-Mitchell

Fri 7/11

4:49 p.m.-11:22 p.m.

1 stop5h 33m

C$ 610

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Thu 26/2

2:15 p.m.-10:28 p.m.

1 stop9h 13m

Milwaukee-Mitchell

Mon 2/3

1:25 p.m.-10:54 p.m.

1 stop8h 29m

C$ 621

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Mon 5/1

12:05 p.m.-6:53 p.m.

1 stop7h 48m

Milwaukee-Mitchell

Mon 12/1

6:00 a.m.-7:45 p.m.

1 stop12h 45m

C$ 621

Flights are sorted by cheapest round-trip flights first.

Deals found on 19/10

Showing 1-10 of 36 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 20 October 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, American Airlines, and Delta can get you from Region of Ontario to Milwaukee in just under 6h 16m. Your travel time can differ by up to 2h 37m. 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 Delta, which is currently one of the cheapest options available, starting at C$ 364. United Airlines flights start at C$ 373 while deals on American Airlines start at C$ 397 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 Montreal Pierre Elliott Trudeau Intl - Milwaukee-Mitchell. You may also consider Toronto Pearson 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 20 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 297AverageC$ 595FlexibilityNo 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?

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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