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Milwaukee

$161+ Cheap flights from Ontario to Milwaukee (MKE)

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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — MKE
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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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 June 12, 2025.

Round-trip from

$367
(United Airlines)

One-way from

$161
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$511
From Ontario to Milwaukee-Mitchell
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One-way flight from Ontario to Milwaukee-Mitchell
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Highest demand for flights based on searches. 13% potential increase in price ($63 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Ontario to Milwaukee

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 June 12, 2025.

This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/156:15 amYUL - MKE
1 stop4h 47mUnited Airlines
Sun 8/1710:45 amMKE - YUL
1 stop5h 41mUnited Airlines
Deal found 6/10$367
This American Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/155:29 pmYUL - MKE
1 stop4h 50mAmerican Airlines
Sun 8/176:32 amMKE - YUL
1 stop15h 27mAmerican Airlines
Deal found 6/10$376
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/256:20 amYUL - MKE
1 stop6h 16mDelta
Tue 7/19:41 amMKE - YUL
1 stop5h 44mDelta
Deal found 6/10$379
This Kiwi.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/911:15 pmYYZ - MKE
2 stops17h 27mMultiple Airlines
Wed 7/164:37 pmMKE - YYZ
1 stop29h 07mMultiple Airlines
Deal found 6/11$386
This American Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/211:44 amYYZ - MKE
1 stop7h 17mAmerican Airlines
Sun 10/56:31 pmMKE - YYZ
1 stop15h 21mAmerican Airlines
Deal found 6/11$411
This Kiwi.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/104:25 pmYOW - MKE
1 stop24h 17mMultiple Airlines
Mon 7/144:37 pmMKE - YOW
1 stop23h 29mMultiple Airlines
Deal found 6/10$418
This Mytrip deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/238:55 amYUL - MKE
3 stops34h 10mMultiple Airlines
Wed 6/257:14 pmMKE - YUL
1 stop18h 06mMultiple Airlines
Deal found 6/9$421
This FlightHub deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/236:45 amYUL - MKE
2 stops10h 19mWestJet
Wed 6/259:13 amMKE - YUL
1 stop13h 05mWestJet
Deal found 6/9$449
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/97:55 amYYZ - MKE
1 stop5h 27mDelta
Wed 7/164:58 pmMKE - YYZ
1 stop5h 00mDelta
Deal found 6/11$468
This United Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/255:15 pmYYZ - MKE
1 stop6h 30mUnited Airlines
Sun 7/278:35 amMKE - YYZ
1 stop6h 11mUnited Airlines
Deal found 6/12$477
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/106:05 amYOW - MKE
2 stops11h 45mUnited Airlines
Mon 7/1410:45 amMKE - YOW
1 stop9h 50mUnited Airlines
Deal found 6/10$585
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/115:55 amYOW - MKE
2 stops12h 49mDelta
Mon 7/143:14 pmMKE - YOW
2 stops8h 08mDelta
Deal found 6/10$677

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 2,558,603 searches. Data last updated June 12, 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

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Fri 8/15

6:15 am-10:02 am

1 stop4h 47m

Milwaukee-Mitchell

Sun 8/17

10:45 am-5:26 pm

1 stop5h 41m

$367

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Fri 8/15

5:29 pm-9:19 pm

1 stop4h 50m

Milwaukee-Mitchell

Sun 8/17

6:32 am-10:59 pm

1 stop15h 27m

$376

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Wed 6/25

6:20 am-11:36 am

1 stop6h 16m

Milwaukee-Mitchell

Tue 7/1

9:41 am-4:25 pm

1 stop5h 44m

$379

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Wed 7/9

11:15 pm-3:42 pm

2 stops17h 27m

Milwaukee-Mitchell

Wed 7/16

4:37 pm-10:44 pm

1 stop29h 07m

$386

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Thu 10/2

11:44 am-6:01 pm

1 stop7h 17m

Milwaukee-Mitchell

Sun 10/5

6:31 pm-10:52 am

1 stop15h 21m

$411

OttawaMilwaukee

YOW - MKE

YOWMKE

Ottawa

Thu 7/10

4:25 pm-3:42 pm

1 stop24h 17m

Milwaukee-Mitchell

Mon 7/14

4:37 pm-5:06 pm

1 stop23h 29m

$418

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Mon 6/23

8:55 am-6:05 pm

3 stops34h 10m

Milwaukee-Mitchell

Wed 6/25

7:14 pm-2:20 pm

1 stop18h 06m

$421

MontrealMilwaukee

YUL - MKE

YULMKE

Montreal Pierre Elliott Trudeau Intl

Mon 6/23

6:45 am-4:04 pm

2 stops10h 19m

Milwaukee-Mitchell

Wed 6/25

9:13 am-11:18 pm

1 stop13h 05m

$449

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Wed 7/9

7:55 am-12:22 pm

1 stop5h 27m

Milwaukee-Mitchell

Wed 7/16

4:58 pm-10:58 pm

1 stop5h 00m

$468

TorontoMilwaukee

YYZ - MKE

YYZMKE

Toronto Pearson Intl

Fri 7/25

5:15 pm-10:45 pm

1 stop6h 30m

Milwaukee-Mitchell

Sun 7/27

8:35 am-3:46 pm

1 stop6h 11m

$477

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 30 results
1
2
3

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, February is the cheapest month in which you can book a flight from Region of Ontario to Milwaukee (average of $280). Flying from Region of Ontario to Milwaukee in June is currently the most expensive (average of $376). 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 June 12, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Region of Ontario to Milwaukee as you normally would.

Rainfall in Milwaukee by month

Plan your trip to Milwaukee by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Milwaukee ranges from 1.4 - 4.0 inches per month. June is typically the wettest month, when rainfall can reach 4.0 in. January is typically the driest time to visit Milwaukee when rainfall is around 1.4 in.

Temperature in Milwaukee by month

Plan your trip to Milwaukee by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Milwaukee, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

Reviews of airlines servicing Milwaukee

Get insights into the airlines that provide service to Milwaukee. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Milwaukee. Reviews last updated June 12, 2025.
Read through reviews of airlines operating flights from Ontario to Milwaukee, such as Alaska Airlines, Delta and United Airlines. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
WestJet
7.2
Good
2,868 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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?

    Milwaukee-Mitchell (MKE), located 6.4 mi from the city center, is the airport you fly into when you book flights from Ontario to Milwaukee.

  • What are the cheapest airlines to fly from Region of Ontario to Milwaukee one-way?

    $204 is the cheapest one-way deal found within the past few days, from Sun Country Air. You may also be able to find cheap deals on American Airlines and United Airlines, with prices starting from $214 and $226, respectively.

  • 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, February is the cheapest month in which you can book a flight from Region of Ontario to Milwaukee (average of $280). Flying from Region of Ontario to Milwaukee in June is currently the most expensive (average of $376). 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

Traveling to a place near Ontario?

Book flights to Ontario if you plan to visit one of these locations
Mequon
Sheboygan
Oak Creek
Wauwatosa

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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 airline flying from Ontario to Milwaukee

Discover the top airline 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 2,558,603 searches. Data last updated June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$299Average$482FlexibilityNo cancel feeOn-time71%

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