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$187+ 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 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — YYZ
Aug 26 — Sep 21
Wed 8/26
Wed 9/2
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 July 27, 2026.

This American Airlines deal was found by Cheapflights users on 7/26. 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 9/128:31 am
MKE
-
YYZ
1 stop13h 55m
American Airlines
Mon 9/147:15 pm
YYZ
-
MKE
1 stop13h 46m
American Airlines
Deal found 7/26$427
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 9/2410:10 am
MKE
-
YYZ
2 stops10h 45m
Multiple Airlines
Wed 9/307:45 am
YYZ
-
MKE
1 stop26h 23m
Multiple Airlines
Deal found 7/27$433
This United Airlines deal was found by Cheapflights users on 7/24. 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 9/85:00 am
MKE
-
YUL
1 stop4h 40m
United Airlines
Tue 9/159:45 am
YUL
-
MKE
1 stop6h 26m
United Airlines
Deal found 7/24$442
This United Airlines deal was found by Cheapflights users on 7/25. 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 8/223:15 pm
MKE
-
YUL
1 stop5h 11m
United Airlines
Tue 9/14:55 pm
YUL
-
MKE
1 stop5h 05m
United Airlines
Deal found 7/25$443
This American Airlines deal was found by Cheapflights users on 7/25. 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 9/225:03 am
MKE
-
YYZ
1 stop11h 41m
American Airlines
Thu 9/247:00 pm
YYZ
-
MKE
1 stop14h 01m
American Airlines
Deal found 7/25$444
This American Airlines deal was found by Cheapflights users on 7/26. 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 8/297:45 am
MKE
-
YYZ
1 stop8h 00m
American Airlines
Tue 9/17:20 am
YYZ
-
MKE
1 stop12h 10m
American Airlines
Deal found 7/26$446
This American Airlines deal was found by Cheapflights users on 7/26. 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 9/208:31 am
MKE
-
YYZ
1 stop13h 55m
American Airlines
Tue 9/226:30 am
YYZ
-
MKE
1 stop14h 33m
American Airlines
Deal found 7/26$452
This United Airlines deal was found by Cheapflights users on 7/26. 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 12/125:00 am
MKE
-
YUL
1 stop15h 01m
United Airlines
Tue 12/157:00 am
YUL
-
MKE
2 stops9h 04m
United Airlines
Deal found 7/26$452
This American Airlines deal was found by Cheapflights users on 7/27. 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 9/247:30 am
MKE
-
YYZ
1 stop14h 56m
American Airlines
Tue 9/2911:40 am
YYZ
-
MKE
1 stop11h 14m
American Airlines
Deal found 7/27$455
This American Airlines deal was found by Cheapflights users on 7/25. 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 9/18:20 am
MKE
-
YYZ
1 stop14h 09m
American Airlines
Wed 9/21:15 pm
YYZ
-
MKE
1 stop8h 45m
American Airlines
Deal found 7/25$461
This Delta deal was found by Cheapflights users on 7/25. 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.
Thu 8/271:27 pm
MKE
-
YUL
1 stop9h 03m
Delta
Tue 9/19:30 am
YUL
-
MKE
1 stop8h 44m
Delta
Deal found 7/25$461
This American Airlines deal was found by Cheapflights users on 7/25. 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 9/212:58 pm
MKE
-
YYZ
1 stop9h 48m
American Airlines
Sun 9/61:15 pm
YYZ
-
MKE
1 stop8h 45m
American Airlines
Deal found 7/25$462

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 July 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$427
(American Airlines)

One-way from

$187
(American Airlines)

Popular in

August

Cheapest in

September

Average price

$910
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. 8% potential increase in price ($70 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 July 27, 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 10/24

9:35 am-4:16 pm

1 stop5h 41m

Montreal Pierre Elliott Trudeau Intl

Wed 10/28

6:00 am-8:50 am

1 stop3h 50m

$442

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Sat 12/12

2:50 pm-9:01 pm

1 stop5h 11m

Montreal Pierre Elliott Trudeau Intl

Tue 12/15

4:45 pm-8:54 pm

1 stop5h 09m

$442

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Tue 9/8

5:00 am-10:40 am

1 stop4h 40m

Montreal Pierre Elliott Trudeau Intl

Tue 9/15

9:45 am-3:11 pm

1 stop6h 26m

$443

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Tue 9/8

6:47 pm-11:27 pm

1 stop3h 40m

Montreal Pierre Elliott Trudeau Intl

Tue 9/15

6:00 am-8:48 am

1 stop3h 48m

$443

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Wed 9/23

6:00 am-2:40 pm

2 stops7h 40m

Montreal Pierre Elliott Trudeau Intl

Tue 9/29

9:45 am-3:11 pm

1 stop6h 26m

$452

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Sat 10/10

10:42 am-10:06 pm

2 stops10h 24m

Montreal Pierre Elliott Trudeau Intl

Tue 10/13

9:45 am-1:43 pm

1 stop4h 58m

$452

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Sun 8/23

10:19 am-5:30 pm

1 stop6h 11m

Montreal Pierre Elliott Trudeau Intl

Tue 9/1

6:10 am-10:00 am

1 stop4h 50m

$461

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Sun 8/23

5:00 am-10:40 am

1 stop4h 40m

Montreal Pierre Elliott Trudeau Intl

Sat 8/29

6:10 am-10:00 am

1 stop4h 50m

$461

MilwaukeeToronto

MKE - YYZ

MKEYYZ

Milwaukee-Mitchell

Sat 8/8

6:00 am-6:30 pm

1 stop11h 30m

Toronto Pearson Intl

Fri 8/14

6:00 am-9:51 am

1 stop4h 51m

$514

MilwaukeeToronto

MKE - YYZ

MKEYYZ

Milwaukee-Mitchell

Sat 9/12

7:14 am-11:18 am

1 stop3h 04m

Toronto Pearson Intl

Mon 9/14

6:00 am-8:48 am

1 stop3h 48m

$514

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Showing 1-10 of 50 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, January is the cheapest month in which you can book a flight from Milwaukee to Region of Ontario (average of $604). 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 July 27, 2026.
See what other customers who have flown with Delta,United Airlines, andAmerican 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
8,482 reviews

Entertainment

7.8

Boarding

8.1

Comfort

7.8

Food

7.2

Overall

7.8

Crew

8.5

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
8,482 reviews
Delta
7.8
Good
8,482 reviews

Entertainment

7.8

Boarding

8.1

Comfort

7.8

Food

7.2

Overall

7.8

Crew

8.5

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
10,041 reviews
Delta
7.8
Good
8,482 reviews

Entertainment

7.8

Boarding

8.1

Comfort

7.8

Food

7.2

Overall

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
American Airlines
7.1
Good
11,836 reviews
Delta
7.8
Good
8,482 reviews

Entertainment

7.8

Boarding

8.1

Comfort

7.8

Food

7.2

Overall

7.8

Crew

8.5

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 4h 40m. United Airlines provides one of the quickest options available for as low as $442. 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, January is the cheapest month in which you can book a flight from Milwaukee to Region of Ontario (average of $604). 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 2 airlines flying from Milwaukee to Ontario

Discover the top 2 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 July 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$348Average$572FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$437Average$639FlexibilityNo cancel feeOn-time71%

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