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Cheap flights from Ontario to Milwaukee from C$ 258

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 5/3. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — MKE
19 Feb — 26 Feb1
1 adult
1 adult, Economy, 0 bags

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 January 2026.

Round-trip from

C$ 501

One-way from

C$ 258

Popular in

August

Cheapest in

April

Average price

C$ 633
American Airlines
  • American Airlines
  • 19/2-23/2
  • 2 total stops
  • 26h 08m total
  • Ontario to Milwaukee
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5/3
  • 5/3
  • 1 total stop
  • 12h 27m total
  • Ontario to Milwaukee
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (C$ 126 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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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 January 2026.

Thu 19/23:45 p.m.
YUL
-
MKE
1 stop17h 04m
American Airlines
Mon 23/25:00 a.m.
MKE
-
YUL
1 stop9h 04m
American Airlines
Deal found 18/1C$ 501
Wed 18/27:30 a.m.
YUL
-
MKE
2 stops11h 24m
American Airlines
Mon 23/25:00 a.m.
MKE
-
YUL
1 stop9h 04m
American Airlines
Deal found 18/1C$ 508
Fri 13/26:17 p.m.
YYZ
-
MKE
1 stop14h 30m
American Airlines
Wed 18/28:00 a.m.
MKE
-
YYZ
1 stop12h 29m
American Airlines
Deal found 20/1C$ 509
Thu 12/21:10 p.m.
YYZ
-
MKE
1 stop7h 49m
American Airlines
Wed 18/21:13 p.m.
MKE
-
YYZ
1 stop7h 16m
American Airlines
Deal found 18/1C$ 511
Sun 15/24:44 p.m.
YYZ
-
MKE
1 stop7h 13m
American Airlines
Sun 22/28:00 a.m.
MKE
-
YYZ
1 stop12h 29m
American Airlines
Deal found 18/1C$ 522
Thu 12/23:45 p.m.
YUL
-
MKE
1 stop17h 04m
American Airlines
Wed 18/28:00 a.m.
MKE
-
YUL
1 stop13h 44m
American Airlines
Deal found 19/1C$ 568
Wed 18/24:45 p.m.
YUL
-
MKE
1 stop6h 43m
United Airlines
Mon 23/26:00 a.m.
MKE
-
YUL
1 stop7h 00m
United Airlines
Deal found 18/1C$ 576
Mon 2/23:00 p.m.
YUL
-
MKE
2 stops7h 59m
United Airlines
Tue 3/23:20 p.m.
MKE
-
YUL
1 stop4h 57m
United Airlines
Deal found 19/1C$ 577
Thu 5/37:15 a.m.
YYZ
-
MKE
1 stop12h 27m
Multiple Airlines
Thu 12/39:01 p.m.
MKE
-
YYZ
1 stop16h 19m
Multiple Airlines
Deal found 18/1C$ 579
Mon 2/212:59 p.m.
YUL
-
MKE
1 stop8h 25m
American Airlines
Tue 3/26:12 a.m.
MKE
-
YUL
1 stop15h 32m
American Airlines
Deal found 19/1C$ 582
Sun 15/24:44 p.m.
YYZ
-
MKE
1 stop7h 13m
American Airlines
Mon 16/25:00 a.m.
MKE
-
YYZ
1 stop15h 29m
American Airlines
Deal found 18/1C$ 632
Sun 14/67:00 a.m.
YUL
-
MKE
1 stop10h 42m
WestJet
Wed 17/69:10 a.m.
MKE
-
YUL
1 stop13h 24m
WestJet
Deal found 18/1C$ 647

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 January 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

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Wed 18/2

7:30 a.m.-5:54 p.m.

2 stops11h 24m

Milwaukee-Mitchell

Mon 23/2

5:00 a.m.-3:04 p.m.

1 stop9h 04m

C$ 508

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Fri 13/2

6:17 p.m.-7:47 a.m.

1 stop14h 30m

Milwaukee-Mitchell

Wed 18/2

8:00 a.m.-9:29 p.m.

1 stop12h 29m

C$ 509

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Thu 12/2

1:10 p.m.-7:59 p.m.

1 stop7h 49m

Milwaukee-Mitchell

Wed 18/2

1:13 p.m.-9:29 p.m.

1 stop7h 16m

C$ 511

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Sun 15/2

4:44 p.m.-10:57 p.m.

1 stop7h 13m

Milwaukee-Mitchell

Sun 22/2

8:00 a.m.-9:29 p.m.

1 stop12h 29m

C$ 522

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Thu 12/2

3:45 p.m.-7:49 a.m.

1 stop17h 04m

Milwaukee-Mitchell

Wed 18/2

8:00 a.m.-10:44 p.m.

1 stop13h 44m

C$ 568

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Thu 19/2

7:00 a.m.-2:05 p.m.

2 stops8h 05m

Milwaukee-Mitchell

Mon 23/2

5:00 a.m.-3:16 p.m.

2 stops9h 16m

C$ 576

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Wed 18/2

2:29 p.m.-9:51 p.m.

1 stop8h 22m

Milwaukee-Mitchell

Sat 21/2

5:00 p.m.-11:10 p.m.

1 stop5h 10m

C$ 576

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Wed 18/2

6:00 a.m.-10:30 a.m.

1 stop5h 30m

Milwaukee-Mitchell

Mon 23/2

1:25 p.m.-9:17 p.m.

1 stop6h 52m

C$ 576

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Wed 18/2

2:29 p.m.-9:51 p.m.

1 stop8h 22m

Milwaukee-Mitchell

Mon 23/2

9:31 a.m.-3:55 p.m.

1 stop5h 24m

C$ 576

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Fri 6/3

3:00 p.m.-10:14 p.m.

2 stops8h 14m

Milwaukee-Mitchell

Sun 15/3

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

1 stop7h 00m

C$ 576

Flights are sorted by cheapest round-trip flights first.

Deals found on 19/1

Showing 1-10 of 23 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$ 114). Flying from Region of Ontario to Milwaukee in February is currently the most expensive (average of C$ 254). 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?

    American Airlines, United Airlines, and Delta can get you from Region of Ontario to Milwaukee in just under 8h 05m. Your travel time can differ by up to 3h 19m. 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 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, April 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$ 254). 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 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 294AverageC$ 589FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
DeltaCheapestC$ 352AverageC$ 726FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapestC$ 410AverageC$ 708FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 543AverageC$ 769FlexibilityNo 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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