HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$214+ 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
Aug 1 — Aug 81
Sat 8/1
Sat 8/8
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 July 2, 2026.

This Kiwi.com deal was found by Cheapflights users on 6/28. 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 9/812:10 pm
MKE
-
YYZ
1 stop27h 35m
Multiple Airlines
Sat 9/129:45 am
YYZ
-
MKE
1 stop4h 03m
Multiple Airlines
Deal found 6/28$450
This American Airlines deal was found by Cheapflights users on 7/1. 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 8/256:48 pm
MKE
-
YYZ
1 stop15h 11m
American Airlines
Tue 9/17:20 am
YYZ
-
MKE
1 stop14h 40m
American Airlines
Deal found 7/1$451
This Kiwi.com deal was found by Cheapflights users on 6/30. 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.
Thu 10/298:03 pm
MKE
-
YYZ
1 stop16h 37m
Multiple Airlines
Mon 11/26:30 am
YYZ
-
MKE
1 stop13h 38m
Multiple Airlines
Deal found 6/30$456
This American Airlines deal was found by Cheapflights users on 6/29. 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 8/256:00 pm
MKE
-
YUL
1 stop20h 29m
American Airlines
Wed 8/265:34 pm
YUL
-
MKE
1 stop15h 15m
American Airlines
Deal found 6/29$462
This American Airlines deal was found by Cheapflights users on 7/1. 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.
Sat 8/228:20 am
MKE
-
YYZ
1 stop9h 10m
American Airlines
Sat 8/297:29 am
YYZ
-
MKE
1 stop14h 31m
American Airlines
Deal found 7/1$463
This American Airlines deal was found by Cheapflights users on 6/28. 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 stop8h 32m
American Airlines
Tue 7/2811:39 am
YYZ
-
MKE
1 stop11h 42m
American Airlines
Deal found 6/28$465
This Kiwi.com deal was found by Cheapflights users on 6/27. 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.
Tue 7/288:43 am
MKE
-
YYZ
1 stop10h 22m
Multiple Airlines
Wed 8/1210:00 am
YYZ
-
MKE
1 stop8h 14m
Multiple Airlines
Deal found 6/27$473
This Kiwi.com deal was found by Cheapflights users on 6/27. 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.
Tue 7/288:43 am
MKE
-
YYZ
1 stop10h 22m
Multiple Airlines
Sun 8/99:45 am
YYZ
-
MKE
1 stop4h 00m
Multiple Airlines
Deal found 6/27$474
This Kiwi.com deal was found by Cheapflights users on 6/27. 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.
Tue 7/218:43 am
MKE
-
YYZ
1 stop10h 22m
Multiple Airlines
Sun 8/24:45 pm
YYZ
-
MKE
2 stops40h 13m
Multiple Airlines
Deal found 6/27$478
This Billigflug deal was found by Cheapflights users on 6/27. 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 Billigflug is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/15:00 am
MKE
-
YUL
1 stop15h 26m
Air Canada
Sat 8/86:10 am
YUL
-
MKE
1 stop9h 26m
Air Canada
Deal found 6/27$483
This American Airlines deal was found by Cheapflights users on 6/29. 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 8/246:00 pm
MKE
-
YUL
1 stop17h 27m
American Airlines
Tue 8/252:30 pm
YUL
-
MKE
1 stop9h 29m
American Airlines
Deal found 6/29$484
This Kiwi.com deal was found by Cheapflights users on 6/27. 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.
Tue 7/218:43 am
MKE
-
YYZ
1 stop10h 22m
Multiple Airlines
Wed 8/59:45 am
YYZ
-
MKE
1 stop4h 00m
Multiple Airlines
Deal found 6/27$485

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 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$450
(Kiwi.com)

One-way from

$214
(American Airlines)

Popular in

August

Cheapest in

September

Average price

$676
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 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 2, 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

Sat 8/1

9:13 am-11:29 pm

1 stop13h 16m

Toronto Pearson Intl

Wed 8/5

7:20 am-7:59 pm

1 stop13h 39m

$463

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Tue 8/4

7:50 am-9:26 pm

1 stop12h 36m

Montreal Pierre Elliott Trudeau Intl

Sat 8/8

4:55 pm-10:29 pm

1 stop6h 34m

$492

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Wed 7/15

6:14 am-10:06 pm

1 stop14h 52m

Montreal Pierre Elliott Trudeau Intl

Wed 7/22

6:10 am-9:53 am

1 stop4h 43m

$492

MilwaukeeToronto

MKE - YYZ

MKEYYZ

Milwaukee-Mitchell

Wed 7/29

6:01 am-5:34 pm

1 stop10h 33m

Toronto Pearson Intl

Wed 8/5

7:20 am-9:00 pm

1 stop14h 40m

$499

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Wed 8/26

6:28 am-1:46 pm

1 stop6h 18m

Montreal Pierre Elliott Trudeau Intl

Sun 8/30

1:07 pm-11:14 pm

1 stop11h 07m

$513

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Thu 7/16

8:50 am-5:30 pm

1 stop7h 40m

Montreal Pierre Elliott Trudeau Intl

Sat 7/25

6:10 am-6:48 pm

1 stop13h 38m

$513

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Wed 8/19

6:00 am-11:43 am

1 stop4h 43m

Montreal Pierre Elliott Trudeau Intl

Mon 8/24

5:34 pm-11:02 am

1 stop18h 28m

$513

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Wed 8/26

10:19 am-7:45 pm

2 stops8h 26m

Montreal Pierre Elliott Trudeau Intl

Sun 8/30

6:10 am-10:00 am

1 stop4h 50m

$523

MilwaukeeMontreal

MKE - YUL

MKEYUL

Milwaukee-Mitchell

Tue 8/11

5:00 am-4:10 pm

2 stops10h 10m

Montreal Pierre Elliott Trudeau Intl

Thu 8/27

3:25 pm-11:37 pm

1 stop9h 12m

$523

MilwaukeeToronto

MKE - YYZ

MKEYYZ

Milwaukee-Mitchell

Sat 7/18

7:40 am-5:39 pm

1 stop8h 59m

Toronto Pearson Intl

Sun 7/26

11:39 am-6:33 pm

1 stop7h 54m

$532

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

Showing 1-10 of 46 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, 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.

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 July 2, 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
8,452 reviews

Food

7.2

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.8

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
8,452 reviews
Delta
7.8
Good
8,452 reviews

Food

7.2

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.8

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
9,926 reviews
Delta
7.8
Good
8,452 reviews

Food

7.2

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.8

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 12h 36m. American Airlines provides one of the quickest options available for as low as $492. 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

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

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 July 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$362Average$572FlexibilityNo 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.