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$60+ 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 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — ONT
Mar 21 — Mar 281
Sat 3/21
Sat 3/28
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 February 19, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/241:50 pm
MSP
-
ONT
1 stop12h 05m
Frontier
Mon 4/2712:59 am
ONT
-
MSP
1 stop20h 59m
Frontier
Deal found 2/18$160
This Trip.com deal was found by Cheapflights users on 2/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/176:21 pm
MSP
-
ONT
1 stop7h 38m
Frontier
Wed 3/256:15 am
ONT
-
MSP
1 stop15h 42m
Frontier
Deal found 2/15$164
This Kiwi.com deal was found by Cheapflights users on 2/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/288:58 pm
ORD
-
ONT
1 stop15h 46m
Frontier
Wed 5/67:29 pm
ONT
-
ORD
1 stop9h 18m
Frontier
Deal found 2/17$165
This Kiwi.com deal was found by Cheapflights users on 2/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/305:20 am
ORD
-
ONT
1 stop13h 28m
Frontier
Tue 5/57:29 pm
ONT
-
ORD
1 stop9h 18m
Frontier
Deal found 2/18$170
This Kiwi.com deal was found by Cheapflights users on 2/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/174:28 pm
ORD
-
ONT
2 stops33h 31m
Frontier
Tue 3/242:23 pm
ONT
-
ORD
1 stop13h 45m
Frontier
Deal found 2/17$171
This Kiwi.com deal was found by Cheapflights users on 2/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/268:58 pm
ORD
-
ONT
1 stop18h 12m
Multiple Airlines
Mon 5/118:59 pm
ONT
-
ORD
1 stop6h 51m
Multiple Airlines
Deal found 2/18$175
This Trip.com deal was found by Cheapflights users on 2/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/102:29 pm
ORD
-
ONT
1 stop11h 27m
Frontier
Mon 4/139:02 pm
ONT
-
ORD
1 stop7h 18m
Frontier
Deal found 2/19$177
This Kiwi.com deal was found by Cheapflights users on 2/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/175:25 am
ORD
-
ONT
1 stop13h 13m
Frontier
Thu 4/2311:44 am
ONT
-
ORD
1 stop17h 03m
Frontier
Deal found 2/15$181
This Kiwi.com deal was found by Cheapflights users on 2/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/116:45 am
MSP
-
ONT
1 stop19h 14m
Frontier
Wed 3/186:15 am
ONT
-
MSP
1 stop9h 11m
Frontier
Deal found 2/18$182
This Kiwi.com deal was found by Cheapflights users on 2/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/278:58 pm
ORD
-
ONT
1 stop15h 46m
Multiple Airlines
Wed 5/67:29 pm
ONT
-
ORD
1 stop8h 21m
Multiple Airlines
Deal found 2/17$183
This Trip.com deal was found by Cheapflights users on 2/18. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/108:55 pm
ORD
-
ONT
1 stop26h 08m
Frontier
Thu 3/122:06 pm
ONT
-
ORD
1 stop14h 02m
Frontier
Deal found 2/18$189
This Trip.com deal was found by Cheapflights users on 2/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/28:09 pm
MSP
-
ONT
1 stop27h 25m
Frontier
Tue 3/106:15 am
ONT
-
MSP
1 stop15h 42m
Frontier
Deal found 2/15$189

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 February 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$160
(Kiwi.com)

One-way from

$60
(Trip.com)

Popular in

December

Cheapest in

July

Average price

$391
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 ($44 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 February 2026
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 February 19, 2026.
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

Tue 4/14

8:15 am-11:55 pm

1 stop17h 40m

Ontario

Sat 4/18

12:59 am-11:58 pm

1 stop20h 59m

$201

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Fri 5/1

3:40 pm-11:24 pm

1 stop9h 44m

Ontario

Mon 5/4

12:59 am-11:58 pm

1 stop20h 59m

$201

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Thu 3/19

1:47 pm-11:59 pm

1 stop12h 12m

Ontario

Wed 3/25

6:15 am-5:26 pm

1 stop9h 11m

$214

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Tue 4/28

7:00 am-2:32 pm

1 stop9h 32m

Ontario

Wed 5/6

7:00 am-4:15 pm

1 stop7h 15m

$264

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Fri 5/1

5:11 pm-11:59 pm

1 stop8h 48m

Ontario

Wed 5/6

7:00 am-4:15 pm

1 stop7h 15m

$264

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 3/11

3:47 pm-10:44 pm

1 stop8h 57m

Ontario

Wed 4/8

7:08 pm-2:14 pm

1 stop17h 06m

$295

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Tue 4/14

7:01 am-4:22 pm

2 stops11h 21m

Ontario

Sat 4/18

10:55 am-10:23 pm

1 stop9h 28m

$305

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Fri 5/15

2:43 pm-10:30 pm

1 stop9h 47m

Ontario

Tue 5/19

7:00 am-4:50 pm

1 stop7h 50m

$309

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Sat 5/16

10:35 am-6:01 pm

1 stop9h 26m

Ontario

Tue 5/19

7:00 am-4:50 pm

1 stop7h 50m

$309

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Tue 5/5

3:56 pm-10:30 pm

1 stop8h 34m

Ontario

Tue 5/12

7:00 am-3:00 pm

1 stop6h 00m

$309

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/18

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 February is currently the most expensive (average of $255). 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.

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 $264, Frontier can have you in Ontario from Wisconsin in 9h 32m. 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 $138 and $143 on United Airlines and American Airlines, 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 February is currently the most expensive (average of $255). 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 February 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$288Average$443FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$288Average$435FlexibilityNo cancel feeOn-time71%
DeltaCheapest$300Average$407FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$330Average$426FlexibilityNo cancel feeOn-time63%

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