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Cheap flights from Ontario to Milwaukee from C$ 294

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 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — MKE
21 Apr — 28 Apr1
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 22 March 2026.

Sat 2/56:05 a.m.
YOW
-
MKE
1 stop4h 59m
United Airlines
Tue 5/53:25 p.m.
MKE
-
YOW
1 stop5h 10m
United Airlines
Deal found 19/3C$ 490
Sat 2/52:40 p.m.
YOW
-
MKE
2 stops7h 08m
Air Canada
Tue 5/55:55 a.m.
MKE
-
YOW
2 stops7h 27m
Air Canada
Deal found 19/3C$ 564
Wed 25/37:10 a.m.
YYZ
-
MKE
1 stop11h 40m
Multiple Airlines
Sat 4/41:37 p.m.
MKE
-
YYZ
1 stop7h 58m
Multiple Airlines
Deal found 17/3C$ 587
Fri 10/412:30 p.m.
YUL
-
MKE
1 stop4h 26m
American Airlines
Sun 12/46:40 p.m.
MKE
-
YUL
1 stop16h 04m
American Airlines
Deal found 21/3C$ 602
Thu 30/49:30 a.m.
YUL
-
MKE
1 stop8h 46m
Delta
Mon 4/51:55 p.m.
MKE
-
YUL
1 stop8h 13m
Delta
Deal found 19/3C$ 608
Fri 10/411:23 a.m.
YUL
-
MKE
2 stops10h 25m
United Airlines
Sun 12/46:50 a.m.
MKE
-
YUL
2 stops6h 50m
United Airlines
Deal found 21/3C$ 609
Tue 28/49:30 a.m.
YUL
-
MKE
1 stop5h 04m
Delta
Wed 29/41:55 p.m.
MKE
-
YUL
1 stop8h 13m
Delta
Deal found 17/3C$ 610
Mon 13/44:16 p.m.
YUL
-
MKE
1 stop6h 25m
American Airlines
Fri 17/46:00 a.m.
MKE
-
YUL
1 stop14h 37m
American Airlines
Deal found 20/3C$ 621
Sat 2/51:15 p.m.
YYZ
-
MKE
1 stop11h 25m
American Airlines
Sat 9/55:37 p.m.
MKE
-
YYZ
1 stop16h 16m
American Airlines
Deal found 18/3C$ 631
Thu 16/46:15 a.m.
YYZ
-
MKE
1 stop8h 08m
American Airlines
Sun 19/45:06 a.m.
MKE
-
YYZ
1 stop8h 27m
American Airlines
Deal found 19/3C$ 645
Fri 1/52:29 p.m.
YUL
-
MKE
1 stop8h 01m
WestJet
Thu 2/76:25 p.m.
MKE
-
YUL
1 stop3h 45m
WestJet
Deal found 21/3C$ 652
Thu 16/46:00 a.m.
YUL
-
MKE
1 stop8h 14m
WestJet
Thu 23/49:35 a.m.
MKE
-
YUL
1 stop12h 33m
WestJet
Deal found 19/3C$ 656

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 22 March 2026.

Round-trip from

C$ 490

One-way from

C$ 294
United Airlines
  • United Airlines
  • 2/5-5/5
  • 3 total stops
  • 20h 24m total
  • Ontario to Milwaukee
Search Deals
3/5
  • 3/5
  • 1 total stop
  • 19h 36m total
  • Ontario to Milwaukee
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 22 March 2026.
Use the filters below to find and compare flights from Ontario to Milwaukee that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OttawaMilwaukee

YOW - MKE

YOWMKE

Ottawa

Sat 2/5

6:00 a.m.-2:27 p.m.

2 stops9h 27m

Milwaukee-Mitchell

Tue 5/5

5:10 a.m.-5:07 p.m.

1 stop10h 57m

C$ 490

OttawaMilwaukee

YOW - MKE

YOWMKE

Ottawa

Mon 4/5

5:25 p.m.-10:03 p.m.

1 stop5h 38m

Milwaukee-Mitchell

Tue 5/5

3:25 p.m.-9:35 p.m.

1 stop5h 10m

C$ 491

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Fri 10/4

12:30 p.m.-3:56 p.m.

1 stop4h 26m

Milwaukee-Mitchell

Sun 12/4

6:40 p.m.-11:44 a.m.

1 stop16h 04m

C$ 602

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Thu 30/4

9:30 a.m.-5:16 p.m.

1 stop8h 46m

Milwaukee-Mitchell

Mon 4/5

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

1 stop8h 13m

C$ 608

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Thu 16/4

6:10 a.m.-10:00 a.m.

1 stop4h 50m

Milwaukee-Mitchell

Thu 23/4

5:10 a.m.-4:10 p.m.

2 stops10h 00m

C$ 609

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Fri 10/4

11:23 a.m.-8:48 p.m.

2 stops10h 25m

Milwaukee-Mitchell

Sun 12/4

6:50 a.m.-2:40 p.m.

2 stops6h 50m

C$ 609

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Tue 28/4

9:30 a.m.-1:34 p.m.

1 stop5h 04m

Milwaukee-Mitchell

Wed 29/4

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

1 stop8h 13m

C$ 610

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Thu 16/4

6:00 a.m.-1:14 p.m.

1 stop8h 14m

Milwaukee-Mitchell

Thu 23/4

9:35 a.m.-11:08 p.m.

1 stop12h 33m

C$ 656

OttawaMilwaukee

YOW - MKE

YOWMKE

Ottawa

Mon 4/5

4:00 p.m.-10:03 p.m.

2 stops7h 03m

Milwaukee-Mitchell

Tue 5/5

5:55 a.m.-4:38 p.m.

2 stops9h 43m

C$ 669

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Sun 19/4

6:10 a.m.-8:49 a.m.

1 stop3h 39m

Milwaukee-Mitchell

Sat 25/4

6:50 a.m.-5:21 p.m.

1 stop9h 31m

C$ 678

Flights are sorted by cheapest round-trip flights first.

Deals found on 19/3

Showing 1-10 of 42 resultsSorted by cheapest first
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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$ 114). Flying from Region of Ontario to Milwaukee in February is currently the most expensive (average of C$ 243). 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, Air Canada, and American Airlines can get you from Region of Ontario to Milwaukee in just under 4h 26m. Your travel time can differ by up to 5h 01m. Region of Ontario and Milwaukee are separated by a distance of 1159 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$ 114). Flying from Region of Ontario to Milwaukee in February is currently the most expensive (average of C$ 243). 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 2 airlines flying from Ontario to Milwaukee

Discover the top 2 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 22 March 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 461AverageC$ 771FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 622AverageC$ 825FlexibilityNo 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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