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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 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — ONT
Mar 14 — Mar 211
Sat 3/14
Sat 3/21
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 12, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/8. 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 3/104:28 pm
ORD
-
ONT
2 stops33h 31m
Frontier
Tue 3/172:23 pm
ONT
-
ORD
1 stop13h 45m
Frontier
Deal found 2/8$160
This Kiwi.com deal was found by Cheapflights users on 2/11. 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.
Sat 3/216:45 am
MSP
-
ONT
1 stop19h 14m
Frontier
Tue 3/246:15 am
ONT
-
MSP
1 stop15h 42m
Frontier
Deal found 2/11$167
This Kiwi.com deal was found by Cheapflights users on 2/8. 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 4/266:45 am
MSP
-
ONT
1 stop26h 46m
Frontier
Tue 5/57:29 pm
ONT
-
MSP
2 stops26h 29m
Frontier
Deal found 2/8$169
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 4/229:18 pm
ORD
-
ONT
1 stop12h 46m
Frontier
Sat 4/2512:59 am
ONT
-
ORD
1 stop6h 51m
Frontier
Deal found 2/10$170
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 3/54:16 pm
ORD
-
ONT
1 stop9h 43m
Frontier
Wed 3/186:15 am
ONT
-
ORD
1 stop25h 28m
Frontier
Deal found 2/10$172
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 3/114:28 pm
ORD
-
ONT
2 stops22h 43m
Frontier
Tue 3/172:23 pm
ONT
-
ORD
1 stop13h 45m
Frontier
Deal found 2/9$173
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 4/299:18 pm
ORD
-
ONT
1 stop12h 46m
Multiple Airlines
Sat 5/27:18 pm
ONT
-
ORD
1 stop8h 13m
Multiple Airlines
Deal found 2/9$174
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 5/59:18 pm
ORD
-
ONT
1 stop18h 22m
Frontier
Sun 5/108:26 am
ONT
-
ORD
1 stop25h 51m
Frontier
Deal found 2/9$175
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 4/299:18 pm
ORD
-
ONT
1 stop12h 46m
Frontier
Thu 4/3012:59 am
ONT
-
ORD
1 stop6h 51m
Frontier
Deal found 2/9$177
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 3/48:30 am
ORD
-
ONT
2 stops15h 04m
Frontier
Wed 3/186:15 am
ONT
-
ORD
1 stop25h 28m
Frontier
Deal found 2/10$180
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 stop15h 42m
Frontier
Deal found 2/9$180
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 3/37:23 pm
ORD
-
ONT
2 stops28h 11m
Multiple Airlines
Mon 3/910:57 am
ONT
-
ORD
1 stop17h 11m
Multiple Airlines
Deal found 2/9$181

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 12, 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

$387
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 12, 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

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Fri 3/6

7:56 pm-11:59 pm

1 stop6h 03m

Ontario

Sun 3/8

6:15 am-7:11 pm

1 stop10h 56m

$270

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 3/11

5:45 am-11:47 am

1 stop8h 02m

Ontario

Wed 3/18

1:20 pm-9:15 pm

1 stop5h 55m

$277

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Sat 3/7

7:00 am-3:08 pm

1 stop10h 08m

Ontario

Sat 3/14

12:02 pm-11:56 pm

1 stop9h 54m

$283

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Sat 3/21

5:14 pm-10:18 pm

1 stop7h 04m

Ontario

Thu 3/26

11:59 pm-8:45 am

1 stop6h 46m

$300

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Wed 4/15

3:01 pm-8:23 pm

1 stop7h 22m

Ontario

Wed 4/22

7:00 am-4:15 pm

1 stop7h 15m

$307

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 3/12

12:11 pm-9:00 pm

1 stop10h 49m

Ontario

Wed 3/18

1:20 pm-9:15 pm

1 stop5h 55m

$307

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 3/12

12:11 pm-9:00 pm

1 stop10h 49m

Ontario

Sat 3/14

10:25 pm-9:04 am

1 stop8h 39m

$307

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Fri 5/29

2:35 pm-10:28 pm

1 stop9h 53m

Ontario

Sat 6/6

1:00 pm-9:05 pm

1 stop6h 05m

$309

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Sat 4/11

4:15 pm-8:36 pm

1 stop6h 21m

Ontario

Sat 4/18

5:10 am-2:38 pm

1 stop7h 28m

$309

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Wed 3/4

2:46 pm-9:05 pm

1 stop8h 19m

Ontario

Wed 3/11

1:20 pm-9:34 pm

1 stop6h 14m

$317

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/10

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 $252). 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 $270, Frontier can have you in Ontario from Wisconsin in 6h 03m. The distance between Wisconsin and Ontario is about 1639 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 $252). 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 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$288Average$475FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$288Average$439FlexibilityNo cancel feeOn-time71%
DeltaCheapest$300Average$407FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$330Average$424FlexibilityNo cancel feeOn-time63%

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