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$63+ Cheap flights from Wisconsin to Ontario (ONT)

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 2/11. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — ONT
Dec 16 — Dec 231
Tue 12/16
Tue 12/23
1 adult, Economy
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Find flight deals from Wisconsin to Ontario

Cheapest flights from Wisconsin to Ontario
Explore the most affordable flight options available from Wisconsin to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 16, 2025.

This Frontier deal was found by Cheapflights users on 11/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/67:00 amMSP - ONT
1 stop9h 25mFrontier
Sat 12/133:20 pmONT - MSP
1 stop5h 54mFrontier
Deal found 11/15$130
This CheapOair deal was found by Cheapflights users on 11/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/73:47 pmORD - ONT
1 stop26h 46mFrontier
Mon 12/152:59 pmONT - ORD
1 stop6h 58mFrontier
Deal found 11/14$134
This CheapOair deal was found by Cheapflights users on 11/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/257:00 amORD - ONT
1 stop18h 59mFrontier
Thu 1/88:14 pmONT - ORD
1 stop23h 18mFrontier
Deal found 11/15$137
This CheapOair deal was found by Cheapflights users on 11/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:45 amMSP - ONT
1 stop19h 14mFrontier
Tue 12/306:45 amONT - MSP
1 stop15h 08mFrontier
Deal found 11/15$138
This CheapOair deal was found by Cheapflights users on 11/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/206:45 amMSP - ONT
1 stop19h 14mFrontier
Thu 12/256:45 amONT - MSP
1 stop15h 17mFrontier
Deal found 11/15$141
This Frontier deal was found by Cheapflights users on 11/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/77:00 amORD - ONT
1 stop10h 06mFrontier
Fri 12/122:05 pmONT - ORD
1 stop7h 37mFrontier
Deal found 11/15$142
This CheapOair deal was found by Cheapflights users on 11/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/77:00 amMSP - ONT
1 stop10h 06mFrontier
Thu 12/1112:04 pmONT - MSP
1 stop9h 58mFrontier
Deal found 11/14$142
This Kiwi.com deal was found by Cheapflights users on 11/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/41:52 pmORD - ONT
1 stop28h 41mMultiple Airlines
Sun 12/72:59 pmONT - ORD
1 stop30h 58mMultiple Airlines
Deal found 11/13$143
This CheapOair deal was found by Cheapflights users on 11/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/249:34 pmORD - ONT
1 stop13h 19mFrontier
Mon 12/298:14 amONT - ORD
1 stop11h 12mFrontier
Deal found 11/16$144
This CheapOair deal was found by Cheapflights users on 11/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/196:45 amMSP - ONT
1 stop19h 14mFrontier
Sun 12/218:19 amONT - MSP
1 stop10h 56mFrontier
Deal found 11/14$144
This CheapOair deal was found by Cheapflights users on 11/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/147:00 amMSP - ONT
1 stop10h 06mFrontier
Sun 12/218:19 amONT - MSP
1 stop10h 56mFrontier
Deal found 11/14$145
This CheapOair deal was found by Cheapflights users on 11/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/87:00 amMSP - ONT
1 stop9h 25mFrontier
Fri 12/123:20 pmONT - MSP
1 stop6h 42mFrontier
Deal found 11/14$146

Cheap flight deals from Wisconsin to Ontario

Keep the following information in mind while searching for Wisconsin to Ontario flight deals. Data was last updated November 16, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$130
(CheapOair)

One-way from

$63
(Trip.com)

Popular in

December

Cheapest in

July

Average price

$413
Provider with most accurate pricing for Milwaukee-Mitchell-Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for Milwaukee-Mitchell-Los Angeles flights.
Search Deals
From Wisconsin to Ontario
Search Deals
One-way flight from Wisconsin to Ontario
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($46 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Wisconsin 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 November 16, 2025.
Use the filters below to find and compare flights from Wisconsin to Ontario that are best for you.

Fly from

Wisconsin

Fly to

Ontario

Route

Depart

Return

Price

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Sat 1/24

10:45 am-11:24 pm

1 stop14h 39m

Ontario

Sat 1/31

7:15 am-10:59 pm

1 stop13h 44m

$130

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Fri 1/9

7:48 pm-11:56 pm

1 stop6h 08m

Ontario

Sun 1/11

6:00 am-5:06 pm

1 stop9h 06m

$142

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Fri 12/19

6:45 am-11:59 pm

1 stop19h 14m

Ontario

Wed 12/24

6:45 am-12:02 am

1 stop15h 17m

$154

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Tue 1/6

10:40 am-9:50 am

2 stops25h 10m

Ontario

Sat 1/10

7:00 am-10:44 pm

1 stop13h 44m

$186

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Mon 12/22

6:45 am-5:15 pm

2 stops12h 30m

Ontario

Thu 12/25

6:45 am-12:02 am

1 stop15h 17m

$241

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Mon 12/22

6:45 am-11:59 pm

1 stop19h 14m

Ontario

Fri 12/26

6:45 am-12:02 am

1 stop15h 17m

$250

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Fri 12/5

7:00 am-2:25 pm

1 stop9h 25m

Ontario

Mon 12/8

3:20 pm-12:02 am

1 stop6h 42m

$267

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Mon 2/9

6:45 am-12:20 am

1 stop19h 35m

Ontario

Sun 2/15

6:00 am-12:02 am

1 stop16h 02m

$273

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Wed 2/4

7:30 am-1:56 pm

1 stop8h 26m

Ontario

Tue 2/10

7:30 am-11:53 pm

1 stop14h 23m

$285

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Thu 2/5

7:30 am-1:56 pm

1 stop8h 26m

Ontario

Tue 2/10

7:30 am-11:53 pm

1 stop14h 23m

$285

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/15

Showing 1-10 of 60 results
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Best time to book a flight from Wisconsin to Ontario

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

What is the cheapest month to book a flight from Wisconsin to Ontario?

Currently, July is the cheapest month in which you can book a flight from Wisconsin to Ontario (average of $60). Flying from Wisconsin to Ontario in March is currently the most expensive (average of $284). 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.

What is the cheapest time of day to fly from WI to ONT?

Find hourly flight availability from Wisconsin to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 16, 2025.

It’s typically best to fly out from Wisconsin to Ontario in the evening. Doing so could potentially save you 38% on the flight price compared to flying in the morning, which is usually more expensive.

Related info for your journey

Find useful and relevant information for your journey from Wisconsin 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 into for flights to Ontario from Wisconsin?

    If you book a flight to Ontario from Wisconsin, you will be flying to Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario.

  • How long is the flight from Wisconsin to Ontario?

    For as low as $285, Frontier can have you in Ontario from Wisconsin in 8h 26m. The distance between Wisconsin and Ontario is about 1695 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Wisconsin to Ontario one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $63. Users have also found prices from $159 and $163 on Alaska Airlines and Delta, respectively.

  • What are the most popular routes from Wisconsin to Ontario?

    When deciding which route to take from Wisconsin to Ontario consider Chicago O'Hare Intl - Ontario, Minneapolis St Paul - Ontario or Milwaukee-Mitchell - Ontario as they are the most popular.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Wisconsin 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 Wisconsin to Ontario?

    Currently, July is the cheapest month in which you can book a flight from Wisconsin to Ontario (average of $60). Flying from Wisconsin to Ontario in March is currently the most expensive (average of $284). 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

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Alternative routes for Wisconsin to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Wisconsin to Ontario

Discover the top 4 airlines that operate flights from Wisconsin 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 November 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$278Average$444FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$288Average$492FlexibilityNo cancel feeOn-time69%
DeltaCheapest$293Average$377FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$342Average$424FlexibilityNo cancel feeOn-time63%

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