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Cheap flights from Ontario to Milwaukee from C$ 309

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 17/10. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — MKE
5 Aug — 12 Aug1
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 6 July 2026.

Wed 2/126:10 a.m.
YUL
-
MKE
1 stop9h 54m
United Airlines
Sat 5/126:10 a.m.
MKE
-
YUL
1 stop6h 00m
United Airlines
Deal found 1/7C$ 551
Sat 29/89:45 a.m.
YUL
-
MKE
1 stop8h 40m
United Airlines
Tue 1/95:00 a.m.
MKE
-
YUL
1 stop4h 40m
United Airlines
Deal found 3/7C$ 552
Sat 29/87:55 a.m.
YUL
-
MKE
1 stop5h 28m
American Airlines
Tue 1/96:20 a.m.
MKE
-
YUL
1 stop5h 07m
American Airlines
Deal found 1/7C$ 555
Tue 22/93:13 p.m.
YYZ
-
MKE
1 stop7h 41m
American Airlines
Fri 25/98:14 p.m.
MKE
-
YYZ
1 stop13h 45m
American Airlines
Deal found 1/7C$ 589
Thu 29/106:00 a.m.
YUL
-
MKE
1 stop3h 50m
WestJet
Sun 1/119:35 a.m.
MKE
-
YUL
1 stop12h 52m
WestJet
Deal found 4/7C$ 599
Sat 29/86:45 a.m.
YUL
-
MKE
2 stops14h 33m
WestJet
Tue 1/97:09 a.m.
MKE
-
YUL
1 stop3h 47m
WestJet
Deal found 1/7C$ 605
Fri 14/85:34 p.m.
YUL
-
MKE
1 stop4h 26m
American Airlines
Mon 17/86:00 p.m.
MKE
-
YUL
1 stop17h 27m
American Airlines
Deal found 3/7C$ 608
Sat 26/96:30 a.m.
YYZ
-
MKE
1 stop7h 18m
American Airlines
Wed 7/103:09 p.m.
MKE
-
YYZ
1 stop6h 31m
American Airlines
Deal found 3/7C$ 609
Thu 8/106:45 a.m.
YUL
-
MKE
2 stops12h 13m
WestJet
Mon 12/106:43 p.m.
MKE
-
YUL
2 stops22h 37m
WestJet
Deal found 2/7C$ 610
Fri 30/106:25 p.m.
YYZ
-
MKE
1 stop5h 17m
American Airlines
Sat 31/105:00 a.m.
MKE
-
YYZ
1 stop11h 45m
American Airlines
Deal found 1/7C$ 610
Sat 8/87:00 a.m.
YYZ
-
MKE
1 stop6h 48m
United Airlines
Tue 11/88:30 a.m.
MKE
-
YYZ
1 stop8h 26m
United Airlines
Deal found 3/7C$ 612
Sat 8/87:00 a.m.
YYZ
-
MKE
1 stop6h 48m
United Airlines
Sat 15/81:19 p.m.
MKE
-
YYZ
2 stops8h 04m
United Airlines
Deal found 3/7C$ 613

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 6 July 2026.

Round-trip from

C$ 551

One-way from

C$ 309
United Airlines
  • United Airlines
  • 2/12-5/12
  • 2 total stops
  • 15h 54m total
  • Ontario to Milwaukee
Search Deals
WestJet
  • WestJet
  • 17/10
  • 1 total stop
  • 7h 35m 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 6 July 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

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Wed 2/12

6:10 a.m.-3:04 p.m.

1 stop9h 54m

Milwaukee-Mitchell

Sat 5/12

6:10 a.m.-1:10 p.m.

1 stop6h 00m

C$ 551

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Wed 2/12

11:15 a.m.-5:37 p.m.

1 stop7h 22m

Milwaukee-Mitchell

Sat 5/12

7:00 a.m.-12:15 p.m.

1 stop4h 15m

C$ 552

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Sat 29/8

9:15 a.m.-6:55 p.m.

2 stops10h 40m

Milwaukee-Mitchell

Tue 1/9

7:18 a.m.-7:45 p.m.

2 stops11h 27m

C$ 552
Quickest round-trip

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Sat 29/8

6:00 a.m.-8:45 a.m.

1 stop3h 45m

Milwaukee-Mitchell

Tue 1/9

7:09 a.m.-11:56 a.m.

1 stop3h 47m

C$ 552

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Tue 22/9

3:13 p.m.-9:54 p.m.

1 stop7h 41m

Milwaukee-Mitchell

Fri 25/9

8:14 p.m.-10:59 a.m.

1 stop13h 45m

C$ 589

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Sat 29/8

6:45 a.m.-8:18 p.m.

2 stops14h 33m

Milwaukee-Mitchell

Tue 1/9

7:09 a.m.-11:56 a.m.

1 stop3h 47m

C$ 606

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Thu 8/10

6:45 a.m.-5:58 p.m.

2 stops12h 13m

Milwaukee-Mitchell

Mon 12/10

6:43 p.m.-6:20 p.m.

2 stops22h 37m

C$ 610

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Sat 15/8

7:30 p.m.-11:37 p.m.

1 stop5h 07m

Milwaukee-Mitchell

Tue 18/8

10:19 a.m.-5:56 p.m.

1 stop6h 37m

C$ 612

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Sat 8/8

6:10 a.m.-12:45 p.m.

1 stop7h 35m

Milwaukee-Mitchell

Sat 15/8

4:47 p.m.-10:59 p.m.

1 stop5h 12m

C$ 612

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Sat 15/8

8:50 a.m.-12:38 p.m.

1 stop4h 48m

Milwaukee-Mitchell

Sat 22/8

1:19 p.m.-8:44 p.m.

1 stop6h 25m

C$ 612

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/7

Showing 1-10 of 44 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, November is the cheapest month in which you can book a flight from Region of Ontario to Milwaukee (average of C$ 253). Flying from Region of Ontario to Milwaukee in December is currently the most expensive (average of C$ 792). 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.

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, Delta, and American Airlines can get you from Region of Ontario to Milwaukee in just under 7h 22m. Your travel time can differ by up to 2h 32m. 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, November is the cheapest month in which you can book a flight from Region of Ontario to Milwaukee (average of C$ 253). Flying from Region of Ontario to Milwaukee in December is currently the most expensive (average of C$ 792). 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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Pearson Intl to Duluth flights
St. John's to O'Hare Intl flights
Edmonton to Green Bay flights
Pearson Intl to Green Bay flights
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St John to O'Hare Intl flights

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 6 July 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 325AverageC$ 1,584FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 787AverageC$ 940FlexibilityNo 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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