HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$165+ Cheap flights from Milwaukee (MKE) to Ontario

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 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — YYZ
Apr 9 — Apr 161
Thu 4/9
Thu 4/16
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Milwaukee to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Milwaukee to Ontario

Cheapest flights from Milwaukee to Ontario
Explore the most affordable flight options available from Milwaukee to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 10, 2026.

This American Airlines deal was found by Cheapflights users on 3/5. 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.
Wed 4/226:40 pm
MKE
-
YYZ
1 stop15h 13m
American Airlines
Wed 4/296:15 am
YYZ
-
MKE
1 stop8h 08m
American Airlines
Deal found 3/5$335
This American Airlines deal was found by Cheapflights users on 3/5. 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.
Sat 4/111:53 pm
MKE
-
YUL
1 stop20h 51m
American Airlines
Tue 4/1412:30 pm
YUL
-
MKE
1 stop8h 36m
American Airlines
Deal found 3/5$346
This American Airlines deal was found by Cheapflights users on 3/5. 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.
Sat 5/26:40 pm
MKE
-
YYZ
1 stop15h 13m
American Airlines
Thu 5/71:15 pm
YYZ
-
MKE
1 stop7h 51m
American Airlines
Deal found 3/5$354
This American Airlines deal was found by Cheapflights users on 3/5. 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.
Sat 4/188:11 am
MKE
-
YYZ
1 stop14h 18m
American Airlines
Tue 4/211:15 pm
YYZ
-
MKE
1 stop9h 45m
American Airlines
Deal found 3/5$365
This American Airlines deal was found by Cheapflights users on 3/5. 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.
Sun 5/35:06 am
MKE
-
YYZ
1 stop8h 27m
American Airlines
Wed 5/61:15 pm
YYZ
-
MKE
1 stop7h 51m
American Airlines
Deal found 3/5$384
This United Airlines deal was found by Cheapflights users on 3/6. 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 4/310:45 am
MKE
-
YOW
1 stop5h 22m
United Airlines
Fri 4/105:25 pm
YOW
-
MKE
1 stop5h 24m
United Airlines
Deal found 3/6$390
This United Airlines deal was found by Cheapflights users on 3/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/32:32 pm
MKE
-
YOW
1 stop6h 03m
United Airlines
Sun 4/55:25 pm
YOW
-
MKE
1 stop5h 24m
United Airlines
Deal found 3/9$392
This American Airlines deal was found by Cheapflights users on 3/5. 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.
Sat 5/26:40 pm
MKE
-
YYZ
1 stop15h 13m
American Airlines
Fri 5/811:33 am
YYZ
-
MKE
1 stop13h 07m
American Airlines
Deal found 3/5$395
This American Airlines deal was found by Cheapflights users on 3/10. 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.
Wed 4/84:26 pm
MKE
-
YUL
1 stop18h 18m
American Airlines
Wed 4/1512:30 pm
YUL
-
MKE
1 stop8h 36m
American Airlines
Deal found 3/10$396
This United Airlines deal was found by Cheapflights users on 3/5. 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 4/36:50 am
MKE
-
YOW
2 stops8h 48m
United Airlines
Mon 4/65:25 pm
YOW
-
MKE
1 stop5h 24m
United Airlines
Deal found 3/5$401
This United Airlines deal was found by Cheapflights users on 3/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/279:43 am
MKE
-
YOW
1 stop10h 52m
United Airlines
Thu 4/306:00 am
YOW
-
MKE
2 stops9h 27m
United Airlines
Deal found 3/9$402
This United Airlines deal was found by Cheapflights users on 3/5. 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 4/212:13 pm
MKE
-
YOW
2 stops10h 41m
United Airlines
Tue 4/76:00 am
YOW
-
MKE
2 stops8h 47m
United Airlines
Deal found 3/5$407

Find flight deals from Milwaukee to Ontario

Keep the following information in mind while searching for Milwaukee to Ontario flight deals. Data was last updated March 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$335
(American Airlines)

One-way from

$165
(United Airlines)

Popular in

August

Cheapest in

September

Average price

$697
Provider with most accurate pricing for Milwaukee-Mitchell-Toronto (YTO) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Milwaukee-Mitchell-Toronto (YTO) flights.
Search Deals
From Milwaukee-Mitchell to Ontario
Search Deals
One-way flight from Milwaukee-Mitchell to Ontario
Search Deals
High demand for flights, 4% potential price rise
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Milwaukee to Ontario 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 March 10, 2026.
Use the filters below to find and compare flights from Milwaukee to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MilwaukeeToronto

MKE - YYZ

MKEYYZ

Milwaukee-Mitchell

Wed 4/22

6:40 pm-10:53 am

1 stop15h 13m

Toronto Pearson Intl

Wed 4/29

6:15 am-1:23 pm

1 stop8h 08m

$335

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Sat 4/11

1:53 pm-11:44 am

1 stop20h 51m

Montreal Pierre Elliott Trudeau Intl

Tue 4/14

1:03 pm-11:40 pm

2 stops11h 37m

$356

MilwaukeeOttawa

MKE - YOW

MKEYOW

Milwaukee-Mitchell

Fri 4/3

10:45 am-5:07 pm

1 stop5h 22m

Ottawa

Fri 4/10

5:25 pm-9:49 pm

1 stop5h 24m

$390

MilwaukeeOttawa

MKE - YOW

MKEYOW

Milwaukee-Mitchell

Tue 5/5

1:46 pm-9:35 pm

1 stop6h 49m

Ottawa

Wed 5/6

10:44 am-10:03 pm

1 stop12h 19m

$392

MilwaukeeOttawa

MKE - YOW

MKEYOW

Milwaukee-Mitchell

Thu 4/2

10:45 am-5:07 pm

1 stop5h 22m

Ottawa

Tue 4/7

5:25 pm-9:23 pm

1 stop4h 58m

$392

MilwaukeeOttawa

MKE - YOW

MKEYOW

Milwaukee-Mitchell

Fri 4/3

12:13 pm-9:35 pm

1 stop8h 22m

Ottawa

Sun 4/5

5:25 pm-9:49 pm

1 stop5h 24m

$392

MilwaukeeOttawa

MKE - YOW

MKEYOW

Milwaukee-Mitchell

Mon 4/27

2:32 pm-9:35 pm

1 stop6h 03m

Ottawa

Thu 4/30

10:44 am-4:42 pm

1 stop6h 58m

$392

MilwaukeeOttawa

MKE - YOW

MKEYOW

Milwaukee-Mitchell

Sat 4/4

6:50 am-4:38 pm

2 stops8h 48m

Ottawa

Sun 4/5

5:25 pm-9:49 pm

1 stop5h 24m

$401

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Wed 4/15

6:40 pm-11:44 am

1 stop16h 04m

Montreal Pierre Elliott Trudeau Intl

Sun 4/19

4:16 pm-9:41 pm

1 stop6h 25m

$425

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Fri 4/3

7:52 am-10:56 pm

2 stops14h 04m

Montreal Pierre Elliott Trudeau Intl

Fri 4/24

12:30 pm-10:00 pm

1 stop10h 30m

$439

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/6

Showing 1-10 of 49 resultsSorted by cheapest first
1
2
3
...
5

Best time to book a flight from Milwaukee to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Milwaukee 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 Milwaukee to Ontario

What is the cheapest month to book a flight from Milwaukee to Region of Ontario?

Currently, March is the cheapest month in which you can book a flight from Milwaukee to Region of Ontario (average of $78). Flying from Milwaukee to Region of Ontario in February is currently the most expensive (average of $189). 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.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated March 10, 2026.
See what other customers who have flown with Delta,United Airlines, andWestJet from Milwaukee to Ontario have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,276 reviews

Food

7.2

Comfort

7.9

Crew

8.5

Entertainment

7.8

Boarding

8.1

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,276 reviews
Delta
7.9
Good
8,276 reviews

Food

7.2

Comfort

7.9

Crew

8.5

Entertainment

7.8

Boarding

8.1

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,409 reviews
Delta
7.9
Good
8,276 reviews

Food

7.2

Comfort

7.9

Crew

8.5

Entertainment

7.8

Boarding

8.1

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
WestJet
7.2
Good
3,288 reviews
Delta
7.9
Good
8,276 reviews

Food

7.2

Comfort

7.9

Crew

8.5

Entertainment

7.8

Boarding

8.1

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.1
Good
11,414 reviews
Delta
7.9
Good
8,276 reviews

Food

7.2

Comfort

7.9

Crew

8.5

Entertainment

7.8

Boarding

8.1

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Milwaukee to Ontario. 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 from for flights from Milwaukee to Ontario?

    If you book a flight to Ontario from Milwaukee, you will be flying from Milwaukee-Mitchell, which is the city’s only airport. Milwaukee-Mitchell (MKE) is located 6.4 mi from the center of Milwaukee.

  • How long is the flight from Milwaukee to Region of Ontario?

    A quick flight from Milwaukee to Region of Ontario can take about 6h 49m. American Airlines provides one of the quickest options available for as low as $392. Airlines will cover a distance of 627 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most popular routes from Milwaukee to Region of Ontario?

    While some choose either Milwaukee-Mitchell - Montreal Pierre Elliott Trudeau Intl or Milwaukee-Mitchell - Ottawa, Milwaukee-Mitchell - Toronto Pearson Intl is the most popular route from Milwaukee to Region of Ontario.

  • Can I find deals for flights from Milwaukee to Ontario that include hotel bookings?

    Yes. In addition to deals on Milwaukee to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Milwaukee to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Milwaukee to Ontario.

  • Can I find deals for business class flights from Milwaukee to Ontario?

    Yes. Cheapflights offers flight deals from Milwaukee to Ontario 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 Milwaukee to Region of Ontario?

    Currently, March is the cheapest month in which you can book a flight from Milwaukee to Region of Ontario (average of $78). Flying from Milwaukee to Region of Ontario in February is currently the most expensive (average of $189). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 3 airlines flying from Milwaukee to Ontario

Discover the top 3 airlines that operate flights from Milwaukee to Ontario. 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 March 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$252Average$604FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$315Average$476FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$348Average$575FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.