HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$52+ 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 2/23. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — ONT
Jan 9 — Jan 161
Fri 1/9
Fri 1/16
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Wisconsin 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 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 10, 2025.

This Frontier deal was found by Cheapflights users on 12/8. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/183:27 pmORD - ONT
1 stop7h 50mFrontier
Thu 1/86:00 amONT - ORD
1 stop10h 45mFrontier
Deal found 12/8$207
This CheapOair deal was found by Cheapflights users on 12/8. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2110:49 pmORD - ONT
1 stop24h 28mFrontier
Wed 12/246:45 amONT - ORD
1 stop15h 27mFrontier
Deal found 12/8$208
This Gotogate deal was found by Cheapflights users on 12/7. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/1512:59 pmORD - ONT
1 stop10h 18mFrontier
Wed 12/246:45 amONT - ORD
1 stop15h 27mFrontier
Deal found 12/7$215
This Frontier deal was found by Cheapflights users on 12/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/233:27 pmORD - ONT
1 stop7h 50mFrontier
Fri 1/2310:18 amONT - ORD
1 stop8h 11mFrontier
Deal found 12/9$216
This Trip.com deal was found by Cheapflights users on 12/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2110:49 pmORD - ONT
1 stop24h 28mFrontier
Thu 1/810:18 pmONT - ORD
1 stop21h 14mFrontier
Deal found 12/9$229
This Frontier deal was found by Cheapflights users on 12/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/1511:01 amORD - ONT
1 stop8h 31mFrontier
Thu 1/86:00 amONT - ORD
1 stop10h 45mFrontier
Deal found 12/9$233
This Booking.com deal was found by Cheapflights users on 12/9. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2110:49 pmORD - ONT
1 stop24h 28mFrontier
Thu 12/256:00 amONT - ORD
1 stop6h 17mFrontier
Deal found 12/9$240
This Booking.com deal was found by Cheapflights users on 12/8. 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 Booking.com 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
Fri 12/266:45 amONT - MSP
1 stop15h 17mFrontier
Deal found 12/8$246
This Frontier deal was found by Cheapflights users on 12/9. 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 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
Thu 1/86:00 amONT - MSP
1 stop9h 01mFrontier
Deal found 12/9$253
This CheapOair deal was found by Cheapflights users on 12/7. 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 12/188:21 pmORD - ONT
1 stop23h 09mFrontier
Wed 12/246:45 amONT - ORD
1 stop15h 27mFrontier
Deal found 12/7$254
This Frontier deal was found by Cheapflights users on 12/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/1512:59 pmORD - ONT
1 stop10h 18mFrontier
Thu 12/256:00 amONT - ORD
1 stop6h 17mFrontier
Deal found 12/9$258
This Frontier deal was found by Cheapflights users on 12/9. 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 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
Thu 1/16:45 amONT - MSP
1 stop9h 54mFrontier
Deal found 12/9$258

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 10, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$117
(Kiwi.com)

One-way from

$52
(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. 10% potential increase in price ($45 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% 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 10, 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 1/3

6:45 am-11:59 pm

1 stop19h 14m

Ontario

Sat 1/10

7:00 am-10:44 pm

1 stop13h 44m

$228

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Thu 2/26

2:57 pm-11:32 pm

1 stop10h 35m

Ontario

Tue 3/3

6:14 am-11:55 pm

1 stop15h 41m

$266

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Sat 1/17

12:35 pm-10:53 pm

2 stops12h 18m

Ontario

Sat 1/24

1:24 pm-8:50 pm

1 stop5h 26m

$294

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Tue 1/13

4:20 pm-10:38 pm

2 stops8h 18m

Ontario

Wed 1/21

12:41 pm-9:46 pm

1 stop7h 05m

$294

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Sat 1/10

12:35 pm-8:58 pm

2 stops10h 23m

Ontario

Sat 1/31

6:00 am-4:48 pm

2 stops8h 48m

$299

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Mon 1/5

5:26 pm-10:25 pm

1 stop6h 59m

Ontario

Sat 1/10

1:24 pm-9:20 pm

1 stop5h 56m

$303

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Fri 1/9

8:00 am-11:56 pm

1 stop17h 56m

Ontario

Sat 1/17

11:53 am-11:50 pm

1 stop9h 57m

$304

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Thu 2/5

7:00 am-3:08 pm

1 stop10h 08m

Ontario

Tue 2/10

4:03 pm-1:56 pm

1 stop19h 53m

$305

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Thu 3/5

2:57 pm-11:32 pm

1 stop10h 35m

Ontario

Tue 3/10

6:14 am-11:55 pm

1 stop15h 41m

$305

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Tue 1/27

2:50 pm-11:58 pm

2 stops11h 08m

Ontario

Sun 2/1

10:30 pm-10:28 am

1 stop9h 58m

$314

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/8

Showing 1-10 of 60 results
1
2
3
...
6

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 10, 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 $266, Frontier can have you in Ontario from Wisconsin in 10h 35m. 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

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.

Alternative routes for Wisconsin to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Las Vegas flights
John F Kennedy Intl to Los Angeles flights
Newark to Las Vegas flights
Seattle to Los Angeles flights
O'Hare Intl to Los Angeles flights
Dallas/Fort Worth to Las Vegas flights
Newark to Los Angeles flights
O'Hare Intl to Las Vegas flights
John F Kennedy Intl to San Francisco flights
Seattle to Las Vegas flights
Dallas/Fort Worth to Los Angeles flights
San Francisco to Las Vegas flights
Seattle to Ontario flights
San Francisco to Los Angeles flights
Los Angeles to San Francisco flights
LaGuardia to Los Angeles flights
Atlanta to Las Vegas flights
Dulles Intl to Las Vegas flights
LaGuardia to Las Vegas flights
Denver to Las Vegas flights
Newark to San Francisco flights
Seattle to Santa Ana flights
Boston to Los Angeles flights
Minneapolis to Las Vegas flights
Atlanta to Los Angeles flights
Dulles Intl to Los Angeles flights
O'Hare Intl to Ontario flights
Indianapolis to Los Angeles flights
Midway to Los Angeles flights
Reagan-National to Los Angeles flights
Los Angeles to Las Vegas flights
Dallas/Fort Worth to San Francisco flights
San Francisco to Ontario flights
Baltimore to Los Angeles flights
Boston to Las Vegas flights
O'Hare Intl to Santa Ana flights
Burbank to Las Vegas flights
Baltimore to Las Vegas flights
Hobby to Las Vegas flights
Ontario to San Francisco flights
O'Hare Intl to San Francisco flights
Reagan-National to Las Vegas flights
Santa Ana to Las Vegas flights
LaGuardia to San Francisco flights
George Bush Intcntl to Las Vegas flights
Orlando to Las Vegas flights
Detroit to Las Vegas flights
San Francisco to Santa Ana flights
Hobby to Los Angeles flights
John F Kennedy Intl to San Diego flights

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 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$278Average$439FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$288Average$441FlexibilityNo cancel feeOn-time69%
DeltaCheapest$293Average$375FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$342Average$426FlexibilityNo cancel feeOn-time63%

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.