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Cheap flights from Ontario to Milwaukee from C$ 249

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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — MKE
22 Mar — 29 Mar1
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 20 February 2026.

Sun 31/56:25 a.m.
YOW
-
MKE
1 stop5h 49m
United Airlines
Sat 6/612:15 p.m.
MKE
-
YOW
1 stop8h 20m
United Airlines
Deal found 17/2C$ 453
Thu 26/29:45 a.m.
YOW
-
MKE
2 stops12h 59m
United Airlines
Mon 2/31:25 p.m.
MKE
-
YOW
2 stops7h 31m
United Airlines
Deal found 16/2C$ 508
Fri 3/44:44 p.m.
YYZ
-
MKE
1 stop16h 17m
American Airlines
Fri 10/47:01 a.m.
MKE
-
YYZ
1 stop15h 28m
American Airlines
Deal found 17/2C$ 533
Sun 5/46:00 a.m.
YYZ
-
MKE
1 stop10h 53m
American Airlines
Sun 12/49:08 a.m.
MKE
-
YYZ
1 stop13h 21m
American Airlines
Deal found 19/2C$ 539
Thu 12/311:40 a.m.
YYZ
-
MKE
1 stop7h 14m
American Airlines
Sun 15/38:49 a.m.
MKE
-
YYZ
1 stop11h 40m
American Airlines
Deal found 18/2C$ 541
Thu 19/36:00 a.m.
YYZ
-
MKE
1 stop10h 53m
American Airlines
Thu 26/36:46 a.m.
MKE
-
YYZ
1 stop8h 17m
American Airlines
Deal found 19/2C$ 548
Tue 21/412:55 p.m.
YUL
-
MKE
1 stop6h 03m
Delta
Sat 25/41:55 p.m.
MKE
-
YUL
1 stop8h 13m
Delta
Deal found 19/2C$ 556
Sat 23/53:13 p.m.
YYZ
-
MKE
1 stop8h 12m
American Airlines
Sun 24/56:45 p.m.
MKE
-
YYZ
1 stop15h 14m
American Airlines
Deal found 20/2C$ 585
Thu 19/37:10 a.m.
YYZ
-
MKE
1 stop13h 56m
Multiple Airlines
Thu 26/38:25 a.m.
MKE
-
YYZ
1 stop14h 49m
Multiple Airlines
Deal found 17/2C$ 605
Thu 12/37:15 a.m.
YYZ
-
MKE
2 stops29h 21m
Multiple Airlines
Sun 15/37:44 p.m.
MKE
-
YYZ
1 stop17h 36m
Multiple Airlines
Deal found 16/2C$ 609
Tue 21/49:15 a.m.
YUL
-
MKE
2 stops10h 32m
Air Canada
Sat 25/49:43 a.m.
MKE
-
YUL
1 stop8h 12m
Air Canada
Deal found 19/2C$ 630
Fri 27/25:11 p.m.
YOW
-
MKE
1 stop5h 33m
United Airlines
Sun 1/311:30 a.m.
MKE
-
YOW
1 stop4h 37m
United Airlines
Deal found 16/2C$ 646

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 20 February 2026.

Round-trip from

C$ 453

One-way from

C$ 249

Popular in

October

Cheapest in

April

Average price

C$ 516
United Airlines
  • United Airlines
  • 31/5-6/6
  • 2 total stops
  • 14h 09m total
  • Ontario to Milwaukee
Search Deals
United Airlines
  • United Airlines
  • 3/4
  • 1 total stop
  • 5h 29m total
  • Ontario to Milwaukee
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 117 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 February 2026
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 February 2026.
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

Sun 31/5

6:25 a.m.-11:14 a.m.

1 stop5h 49m

Milwaukee-Mitchell

Sat 6/6

12:15 p.m.-9:35 p.m.

1 stop8h 20m

C$ 453

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Fri 3/4

4:44 p.m.-8:01 a.m.

1 stop16h 17m

Milwaukee-Mitchell

Fri 10/4

7:01 a.m.-11:29 p.m.

1 stop15h 28m

C$ 533

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Tue 21/4

12:55 p.m.-5:58 p.m.

1 stop6h 03m

Milwaukee-Mitchell

Sat 25/4

1:55 p.m.-11:08 p.m.

1 stop8h 13m

C$ 556

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Thu 19/3

7:10 a.m.-8:06 p.m.

1 stop13h 56m

Milwaukee-Mitchell

Thu 26/3

8:25 a.m.-12:14 a.m.

1 stop14h 49m

C$ 605

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Thu 12/3

7:15 a.m.-11:36 a.m.

2 stops29h 21m

Milwaukee-Mitchell

Sun 15/3

7:44 p.m.-2:20 p.m.

1 stop17h 36m

C$ 609

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Tue 21/4

9:15 a.m.-6:47 p.m.

2 stops10h 32m

Milwaukee-Mitchell

Sat 25/4

5:10 a.m.-1:09 p.m.

2 stops6h 59m

C$ 630

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Sat 11/4

6:30 a.m.-10:11 a.m.

1 stop4h 41m

Milwaukee-Mitchell

Fri 17/4

5:48 p.m.-11:10 p.m.

1 stop4h 22m

C$ 648

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Thu 19/3

2:57 p.m.-10:43 p.m.

2 stops8h 46m

Milwaukee-Mitchell

Thu 26/3

9:44 a.m.-4:02 p.m.

1 stop5h 18m

C$ 649

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Sat 4/4

7:00 a.m.-11:32 a.m.

1 stop5h 32m

Milwaukee-Mitchell

Sat 11/4

12:13 p.m.-11:59 p.m.

1 stop10h 46m

C$ 649

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Thu 28/5

12:09 p.m.-4:06 p.m.

1 stop4h 57m

Milwaukee-Mitchell

Sun 31/5

6:35 p.m.-10:59 p.m.

1 stop3h 24m

C$ 649

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/2

Showing 1-10 of 43 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, April is the cheapest month in which you can book a flight from Region of Ontario to Milwaukee (average of C$ 110). Flying from Region of Ontario to Milwaukee in February is currently the most expensive (average of C$ 252). 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 5h 49m. Your travel time can differ by up to 10h 28m. 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, April is the cheapest month in which you can book a flight from Region of Ontario to Milwaukee (average of C$ 110). Flying from Region of Ontario to Milwaukee in February is currently the most expensive (average of C$ 252). 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 3 airlines flying from Ontario to Milwaukee

Discover the top 3 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 February 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 244AverageC$ 594FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 422AverageC$ 741FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 621AverageC$ 816FlexibilityNo 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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