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$62+ 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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — ONT
Jan 18 — Jan 251
Sun 1/18
Sun 1/25
1 adult, Economy
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Cheap 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 December 19, 2025.

This Frontier deal was found by Cheapflights users on 12/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:34 pmMSP - ONT
1 stop6h 25mFrontier
Wed 12/316:45 amONT - MSP
1 stop9h 54mFrontier
Deal found 12/17$254
This Booking.com deal was found by Cheapflights users on 12/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:45 amMSP - ONT
1 stop19h 14mFrontier
Thu 1/16:45 amONT - MSP
1 stop15h 17mFrontier
Deal found 12/17$268
This Frontier deal was found by Cheapflights users on 12/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2110:00 pmMSP - ONT
1 stop11h 24mFrontier
Wed 12/316:45 amONT - MSP
1 stop9h 54mFrontier
Deal found 12/17$283
This Delta deal was found by Cheapflights users on 12/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/248:39 amMSP - ONT
1 stop10h 29mDelta
Thu 12/257:05 amONT - MSP
1 stop7h 57mDelta
Deal found 12/17$295
This CheapOair deal was found by Cheapflights users on 12/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:00 amORD - ONT
1 stop18h 59mFrontier
Thu 1/16:45 amONT - ORD
1 stop15h 27mFrontier
Deal found 12/17$305
This Booking.com deal was found by Cheapflights users on 12/18. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:34 pmORD - ONT
1 stop13h 19mFrontier
Mon 1/56:20 pmONT - ORD
1 stop14h 29mFrontier
Deal found 12/18$308
This CheapOair deal was found by Cheapflights users on 12/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:45 amMSP - ONT
1 stop19h 14mFrontier
Thu 1/16:45 amONT - MSP
1 stop15h 17mFrontier
Deal found 12/17$314
This CheapOair deal was found by Cheapflights users on 12/18. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2110:00 pmMSP - ONT
1 stop11h 24mFrontier
Wed 12/246:45 amONT - MSP
1 stop15h 17mFrontier
Deal found 12/18$319
This Frontier deal was found by Cheapflights users on 12/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:34 pmMSP - ONT
1 stop6h 25mFrontier
Tue 12/308:19 amONT - MSP
1 stop8h 09mFrontier
Deal found 12/18$324
This CheapOair deal was found by Cheapflights users on 12/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:00 amORD - ONT
1 stop18h 59mFrontier
Mon 12/296:20 pmONT - ORD
1 stop27h 21mFrontier
Deal found 12/17$325
This Frontier deal was found by Cheapflights users on 12/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:34 pmMSP - ONT
1 stop6h 25mFrontier
Fri 12/266:45 amONT - MSP
1 stop12h 06mFrontier
Deal found 12/17$328
This CheapOair deal was found by Cheapflights users on 12/18. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:00 amORD - ONT
1 stop18h 59mFrontier
Wed 12/316:20 pmONT - ORD
1 stop23h 01mFrontier
Deal found 12/18$329

Find flight deals from Wisconsin to Ontario

Keep the following information in mind while searching for Wisconsin to Ontario flight deals. Data was last updated December 19, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$122
(Trip.com)

One-way from

$62
(Trip.com)

Popular in

December

Cheapest in

July

Average price

$517
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. 9% potential increase in price ($43 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 December 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 December 19, 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

Wed 1/7

10:40 am-11:14 pm

1 stop14h 34m

Ontario

Sat 1/10

7:00 am-10:44 pm

1 stop13h 44m

$183

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Tue 2/17

9:30 am-9:34 pm

1 stop14h 04m

Ontario

Wed 2/25

8:40 am-9:05 am

1 stop22h 25m

$183

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Tue 1/13

10:55 am-10:59 pm

1 stop14h 04m

Ontario

Sun 1/18

6:10 am-9:05 am

1 stop24h 55m

$218

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Wed 1/7

10:40 am-11:14 pm

1 stop14h 34m

Ontario

Sun 1/11

8:31 am-6:53 pm

1 stop8h 22m

$218

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Sun 1/11

7:45 am-12:16 pm

1 stop6h 31m

Ontario

Wed 1/14

1:11 pm-9:00 pm

1 stop5h 49m

$257

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Tue 1/20

6:58 pm-11:58 pm

1 stop7h 00m

Ontario

Sat 2/14

7:30 am-8:54 pm

1 stop11h 24m

$271

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Fri 2/13

9:32 pm-11:59 pm

1 stop28h 27m

Ontario

Wed 2/18

7:30 am-10:59 pm

1 stop13h 29m

$275

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Mon 1/12

6:58 pm-10:38 pm

1 stop5h 40m

Ontario

Sun 2/8

7:30 am-8:59 pm

1 stop11h 29m

$281

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Sat 1/31

7:45 am-12:16 pm

1 stop6h 31m

Ontario

Sun 2/8

7:30 am-8:59 pm

1 stop11h 29m

$281

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Wed 2/25

6:29 am-10:44 pm

1 stop18h 15m

Ontario

Wed 3/4

6:14 am-11:55 pm

1 stop15h 41m

$284

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

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 $283). 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 December 19, 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 $257, Frontier can have you in Ontario from Wisconsin in 6h 31m. The distance between Wisconsin and Ontario is about 1491 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 $129. Users have also found prices from $143 and $183 on American Airlines and Southwest, 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 $283). 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 December 19, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$278Average$443FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$288Average$443FlexibilityNo cancel feeOn-time69%
DeltaCheapest$293Average$375FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$342Average$426FlexibilityNo cancel feeOn-time63%

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