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$236+ 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
Jun 4 — Jun 111
Thu 6/4
Thu 6/11
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 May 5, 2026.

This Kiwi.com deal was found by Cheapflights users on 4/30. 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.
Tue 6/98:43 am
MKE
-
YYZ
2 stops36h 12m
Multiple Airlines
Mon 6/157:45 am
YYZ
-
MKE
1 stop25h 13m
Multiple Airlines
Deal found 4/30$362
This American Airlines deal was found by Cheapflights users on 5/1. 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 6/98:00 am
MKE
-
YYZ
1 stop14h 29m
American Airlines
Mon 6/156:24 pm
YYZ
-
MKE
1 stop14h 18m
American Airlines
Deal found 5/1$420
This American Airlines deal was found by Cheapflights users on 4/30. 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 5/297:30 am
MKE
-
YYZ
1 stop14h 54m
American Airlines
Tue 6/211:39 am
YYZ
-
MKE
1 stop11h 45m
American Airlines
Deal found 4/30$438
This American Airlines deal was found by Cheapflights users on 5/2. 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 5/308:12 am
MKE
-
YYZ
1 stop14h 12m
American Airlines
Sat 6/67:25 am
YYZ
-
MKE
1 stop13h 33m
American Airlines
Deal found 5/2$439
This American Airlines deal was found by Cheapflights users on 5/1. 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 5/297:30 am
MKE
-
YYZ
1 stop14h 54m
American Airlines
Fri 6/56:24 pm
YYZ
-
MKE
1 stop14h 18m
American Airlines
Deal found 5/1$449
This Kiwi.com deal was found by Cheapflights users on 4/30. 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.
Sun 5/248:46 am
MKE
-
YYZ
2 stops12h 09m
Multiple Airlines
Mon 5/259:50 am
YYZ
-
MKE
1 stop23h 11m
Multiple Airlines
Deal found 4/30$450
This American Airlines deal was found by Cheapflights users on 5/3. 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.
Mon 6/16:45 pm
MKE
-
YYZ
1 stop15h 14m
American Airlines
Mon 6/86:24 pm
YYZ
-
MKE
1 stop14h 18m
American Airlines
Deal found 5/3$489
This American Airlines deal was found by Cheapflights users on 5/2. 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 6/56:50 pm
MKE
-
YYZ
1 stop15h 08m
American Airlines
Tue 6/91:15 pm
YYZ
-
MKE
1 stop7h 43m
American Airlines
Deal found 5/2$497
This American Airlines deal was found by Cheapflights users on 4/30. 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.
Mon 6/18:12 am
MKE
-
YYZ
1 stop14h 12m
American Airlines
Fri 6/56:24 pm
YYZ
-
MKE
1 stop14h 18m
American Airlines
Deal found 4/30$498
This American Airlines deal was found by Cheapflights users on 5/3. 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 7/27:25 am
MKE
-
YYZ
1 stop14h 56m
American Airlines
Mon 7/61:17 pm
YYZ
-
MKE
1 stop7h 42m
American Airlines
Deal found 5/3$500
This United Airlines deal was found by Cheapflights users on 4/30. 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 6/27:25 am
MKE
-
YOW
1 stop13h 10m
United Airlines
Wed 6/36:05 am
YOW
-
MKE
1 stop5h 04m
United Airlines
Deal found 4/30$551
This Justfly.com deal was found by Cheapflights users on 4/30. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/3010:54 am
MKE
-
YUL
1 stop11h 47m
WestJet
Sat 6/66:00 am
YUL
-
MKE
1 stop3h 49m
WestJet
Deal found 4/30$551

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 May 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$362
(Kiwi.com)

One-way from

$236
(Kiwi.com)

Popular in

October

Cheapest in

September

Average price

$614
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. 1% potential increase in price ($8 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 5, 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

Tue 6/9

8:00 am-11:29 pm

1 stop14h 29m

Toronto Pearson Intl

Mon 6/15

6:24 pm-7:42 am

1 stop14h 18m

$420

MilwaukeeToronto

MKE - YYZ

MKEYYZ

Milwaukee-Mitchell

Fri 5/29

8:12 am-11:24 pm

1 stop14h 12m

Toronto Pearson Intl

Tue 6/2

11:39 am-7:57 pm

1 stop9h 18m

$438

MilwaukeeOttawa

MKE - YOW

MKEYOW

Milwaukee-Mitchell

Tue 6/2

7:25 am-9:35 pm

1 stop13h 10m

Ottawa

Wed 6/3

6:05 am-10:09 am

1 stop5h 04m

$551

MilwaukeeToronto

MKE - YYZ

MKEYYZ

Milwaukee-Mitchell

Mon 6/1

3:12 pm-11:59 pm

1 stop7h 47m

Toronto Pearson Intl

Wed 6/3

4:00 pm-10:19 pm

1 stop7h 19m

$574

MilwaukeeOttawa

MKE - YOW

MKEYOW

Milwaukee-Mitchell

Thu 6/11

1:30 pm-9:35 pm

1 stop7h 05m

Ottawa

Fri 6/12

5:25 pm-8:56 pm

1 stop4h 31m

$583

MilwaukeeToronto

MKE - YYZ

MKEYYZ

Milwaukee-Mitchell

Fri 8/14

6:25 pm-5:23 pm

1 stop21h 58m

Toronto Pearson Intl

Sun 8/16

4:15 pm-5:05 pm

2 stops25h 50m

$585

MilwaukeeToronto

MKE - YYZ

MKEYYZ

Milwaukee-Mitchell

Wed 6/10

6:17 pm-2:59 pm

1 stop19h 42m

Toronto Pearson Intl

Fri 6/12

3:13 pm-9:05 pm

1 stop6h 52m

$615

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Mon 6/15

6:49 pm-11:28 pm

1 stop3h 39m

Montreal Pierre Elliott Trudeau Intl

Mon 6/22

6:00 am-12:35 pm

1 stop7h 35m

$629

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Mon 6/1

7:25 am-9:26 pm

1 stop13h 01m

Montreal Pierre Elliott Trudeau Intl

Wed 6/3

9:45 am-10:19 pm

1 stop13h 34m

$629

MilwaukeeOttawa

MKE - YOW

MKEYOW

Milwaukee-Mitchell

Thu 7/16

8:50 am-9:35 pm

1 stop11h 45m

Ottawa

Mon 7/20

5:20 pm-7:00 am

1 stop14h 40m

$652

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/2

Showing 1-10 of 38 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, June is the cheapest month in which you can book a flight from Milwaukee to Region of Ontario (average of $134). 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.

How much does it cost to fly round-trip from Milwaukee to Region of Ontario?

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 May 5, 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
8,459 reviews

Comfort

7.9

Boarding

8.1

Food

7.2

Overall

7.9

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
4.0
Okay

Joel,May 2026

ATL - JAX

The flight was delivered 50 minutes and taxing took what felt like 20 minutes to takeoff.
Delta
7.9
Good
8,459 reviews
Delta
7.9
Good
8,459 reviews

Comfort

7.9

Boarding

8.1

Food

7.2

Overall

7.9

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
4.0
Okay

Joel,May 2026

ATL - JAX

The flight was delivered 50 minutes and taxing took what felt like 20 minutes to takeoff.
United Airlines
7.4
Good
9,683 reviews
Delta
7.9
Good
8,459 reviews

Comfort

7.9

Boarding

8.1

Food

7.2

Overall

7.9

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
4.0
Okay

Joel,May 2026

ATL - JAX

The flight was delivered 50 minutes and taxing took what felt like 20 minutes to takeoff.
WestJet
7.2
Good
3,331 reviews
Delta
7.9
Good
8,459 reviews

Comfort

7.9

Boarding

8.1

Food

7.2

Overall

7.9

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
4.0
Okay

Joel,May 2026

ATL - JAX

The flight was delivered 50 minutes and taxing took what felt like 20 minutes to takeoff.

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 53m. American Airlines provides one of the quickest options available for as low as $551. 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, June is the cheapest month in which you can book a flight from Milwaukee to Region of Ontario (average of $134). 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 May 5, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$362Average$572FlexibilityNo cancel feeOn-time69%

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