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$186+ 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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — YYZ
Jul 18 — Jul 251
Sat 7/18
Sat 7/25
1 adult, Economy
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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 June 18, 2026.

This American Airlines deal was found by Cheapflights users on 6/18. 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.
Tue 7/215:02 am
MKE
-
YYZ
1 stop11h 32m
American Airlines
Tue 7/281:17 pm
YYZ
-
MKE
1 stop8h 44m
American Airlines
Deal found 6/18$429
This American Airlines deal was found by Cheapflights users on 6/17. 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 9/258:14 pm
MKE
-
YYZ
1 stop15h 21m
American Airlines
Tue 9/296:25 pm
YYZ
-
MKE
1 stop14h 36m
American Airlines
Deal found 6/17$437
This American Airlines deal was found by Cheapflights users on 6/15. 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.
Tue 8/186:48 pm
MKE
-
YYZ
1 stop15h 11m
American Airlines
Thu 8/207:20 am
YYZ
-
MKE
1 stop14h 40m
American Airlines
Deal found 6/15$440
This American Airlines deal was found by Cheapflights users on 6/14. 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.
Tue 9/17:00 pm
MKE
-
YYZ
1 stop14h 59m
American Airlines
Sun 9/67:20 am
YYZ
-
MKE
1 stop8h 06m
American Airlines
Deal found 6/14$446
This American Airlines deal was found by Cheapflights users on 6/13. 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 9/188:14 pm
MKE
-
YYZ
1 stop13h 45m
American Airlines
Sat 9/266:30 am
YYZ
-
MKE
1 stop14h 33m
American Airlines
Deal found 6/13$447
This American Airlines deal was found by Cheapflights users on 6/14. 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 7/297:25 am
MKE
-
YYZ
1 stop15h 04m
American Airlines
Wed 8/511:39 am
YYZ
-
MKE
1 stop7h 39m
American Airlines
Deal found 6/14$454
This American Airlines deal was found by Cheapflights users on 6/16. 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.
Tue 9/151:18 pm
MKE
-
YYZ
1 stop9h 08m
American Airlines
Fri 9/186:30 am
YYZ
-
MKE
1 stop8h 46m
American Airlines
Deal found 6/16$466
This United Airlines deal was found by Cheapflights users on 6/18. 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.
Sat 7/43:11 pm
MKE
-
YUL
1 stop5h 15m
United Airlines
Sat 7/119:45 am
YUL
-
MKE
1 stop6h 51m
United Airlines
Deal found 6/18$472
This Billigflug deal was found by Cheapflights users on 6/17. 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 Billigflug is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/410:28 am
MKE
-
YUL
1 stop6h 02m
Multiple Airlines
Sat 7/116:10 am
YUL
-
MKE
1 stop10h 26m
Multiple Airlines
Deal found 6/17$473
This American Airlines deal was found by Cheapflights users on 6/15. 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 7/185:02 am
MKE
-
YYZ
1 stop11h 37m
American Airlines
Sun 7/267:20 am
YYZ
-
MKE
1 stop13h 40m
American Airlines
Deal found 6/15$478
This United Airlines deal was found by Cheapflights users on 6/15. 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.
Tue 9/156:00 am
MKE
-
YUL
1 stop9h 10m
United Airlines
Wed 9/166:10 am
YUL
-
MKE
1 stop9h 23m
United Airlines
Deal found 6/15$482
This Flysmarter deal was found by Cheapflights users on 6/14. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/256:00 am
MKE
-
YYZ
1 stop8h 43m
Multiple Airlines
Sun 7/267:00 am
YYZ
-
MKE
1 stop3h 53m
Multiple Airlines
Deal found 6/14$484

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 June 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$429
(American Airlines)

One-way from

$186
(American Airlines)

Popular in

August

Cheapest in

September

Average price

$662
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
Highest demand for flights based on searches. 2% potential increase in price ($17 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 June 18, 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

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Sat 7/4

3:11 pm-9:26 pm

1 stop5h 15m

Montreal Pierre Elliott Trudeau Intl

Sat 7/11

9:45 am-3:36 pm

1 stop6h 51m

$472

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Sat 10/24

6:00 am-4:10 pm

1 stop9h 10m

Montreal Pierre Elliott Trudeau Intl

Wed 10/28

6:10 am-11:34 am

1 stop6h 24m

$482

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Tue 10/6

2:20 pm-9:26 pm

1 stop6h 06m

Montreal Pierre Elliott Trudeau Intl

Sat 10/10

6:10 am-10:00 am

1 stop4h 50m

$482

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Tue 9/15

6:00 am-4:10 pm

1 stop9h 10m

Montreal Pierre Elliott Trudeau Intl

Wed 9/16

6:10 am-2:33 pm

1 stop9h 23m

$482

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Wed 8/19

5:00 am-2:40 pm

2 stops8h 40m

Montreal Pierre Elliott Trudeau Intl

Sat 8/29

3:25 pm-11:37 pm

1 stop9h 12m

$491

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Wed 7/1

6:20 am-5:30 pm

1 stop10h 10m

Montreal Pierre Elliott Trudeau Intl

Wed 7/8

9:15 am-10:29 pm

2 stops14h 14m

$491

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Wed 7/15

6:20 am-7:45 pm

2 stops12h 25m

Montreal Pierre Elliott Trudeau Intl

Wed 7/29

9:45 am-2:36 pm

1 stop5h 51m

$491

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Thu 8/20

5:00 am-10:40 am

1 stop4h 40m

Montreal Pierre Elliott Trudeau Intl

Sat 8/22

6:10 am-2:33 pm

1 stop9h 23m

$503

MilwaukeeToronto

MKE - YYZ

MKEYYZ

Milwaukee-Mitchell

Fri 9/11

8:11 am-11:12 pm

1 stop14h 01m

Toronto Pearson Intl

Tue 9/15

6:10 am-8:36 pm

1 stop15h 26m

$510

MilwaukeeToronto

MKE - YYZ

MKEYYZ

Milwaukee-Mitchell

Sun 9/13

7:00 am-10:57 pm

1 stop14h 57m

Toronto Pearson Intl

Sat 9/19

12:15 pm-8:36 pm

1 stop9h 21m

$510

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/14

Showing 1-10 of 42 resultsSorted by cheapest first
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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, September is the cheapest month in which you can book a flight from Milwaukee to Region of Ontario (average of $221). Flying from Milwaukee to Region of Ontario in December is currently the most expensive (average of $1,095). 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 June 18, 2026.
See what other customers who have flown with Delta and United Airlines 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
7.8
Good
8,410 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.8

Comfort

7.8

Food

7.2

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Delta
7.8
Good
8,410 reviews
Delta
7.8
Good
8,410 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.8

Comfort

7.8

Food

7.2

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
United Airlines
7.4
Good
9,859 reviews
Delta
7.8
Good
8,410 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.8

Comfort

7.8

Food

7.2

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

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 5h 15m. American Airlines provides one of the quickest options available for as low as $472. Airlines will cover a distance of 720 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, September is the cheapest month in which you can book a flight from Milwaukee to Region of Ontario (average of $221). Flying from Milwaukee to Region of Ontario in December is currently the most expensive (average of $1,095). 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

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Top airline flying from Milwaukee to Ontario

Discover the top airline 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 June 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$362Average$572FlexibilityNo cancel feeOn-time69%

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