HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Wisconsin

$55+ Cheap flights from Ontario (ONT) to Wisconsin

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.
ONT — MKE
Jan 21 — Jan 281
Tue 1/21
Tue 1/28
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Wisconsin 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 Ontario to Wisconsin

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Wisconsin (USWI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 16, 2025.

Round-trip from

$111
(Mytrip)

One-way from

$55
(Frontier)
From Ontario to Wisconsin
Search Deals
One-way flight from Ontario to Wisconsin
Search Deals

Find flight deals from Ontario to Wisconsin

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

This Mytrip deal was found by Cheapflights users on 1/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1212:59 amONT - MSP
1 stop20h 29mFrontier
Mon 2/2410:27 amMSP - ONT
1 stop10h 31mFrontier
Deal found 1/15$111
This CheapOair deal was found by Cheapflights users on 1/15. 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.
Mon 3/312:59 amONT - MKE
1 stop6h 33mFrontier
Thu 3/610:32 amMKE - ONT
1 stop15h 37mFrontier
Deal found 1/15$140
This Booking.com deal was found by Cheapflights users on 1/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1312:59 amONT - ORD
1 stop21h 45mFrontier
Sun 2/237:59 pmORD - ONT
1 stop13h 27mFrontier
Deal found 1/16$160
This Trip.com deal was found by Cheapflights users on 1/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/212:59 amONT - MSP
1 stop18h 52mMultiple Airlines
Tue 4/86:00 amMSP - ONT
1 stop10h 27mMultiple Airlines
Deal found 1/16$183
This eDestinos deal was found by Cheapflights users on 1/16. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/1710:34 amONT - ORD
2 stops31h 58mMultiple Airlines
Tue 2/257:51 pmORD - ONT
1 stop21h 28mMultiple Airlines
Deal found 1/16$194
This American Airlines deal was found by Cheapflights users on 1/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/1611:59 pmONT - ORD
1 stop6h 24mAmerican Airlines
Thu 2/271:54 pmORD - ONT
1 stop9h 08mAmerican Airlines
Deal found 1/16$247
This KAYAK deal was found by Cheapflights users on 1/16. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/251:05 pmONT - ORD
1 stop8h 43mDelta
Fri 2/285:45 amORD - ONT
1 stop8h 10mDelta
Deal found 1/16$253
This United Airlines deal was found by Cheapflights users on 1/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/121:45 pmONT - MSN
1 stop5h 42mUnited Airlines
Wed 2/193:11 pmMSN - ONT
1 stop7h 41mUnited Airlines
Deal found 1/15$256
This American Airlines deal was found by Cheapflights users on 1/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/156:13 amONT - MSN
1 stop5h 21mAmerican Airlines
Sat 2/225:26 pmMSN - ONT
1 stop6h 50mAmerican Airlines
Deal found 1/16$284
This Alaska Airlines deal was found by Cheapflights users on 1/16. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/156:00 amONT - ORD
1 stop9h 55mAlaska Airlines
Fri 4/183:16 pmORD - ONT
1 stop10h 43mAlaska Airlines
Deal found 1/16$287
This American Airlines deal was found by Cheapflights users on 1/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/116:00 amONT - ATW
2 stops10h 29mAmerican Airlines
Sat 2/151:50 pmATW - ONT
1 stop6h 36mAmerican Airlines
Deal found 1/15$288
This Alaska Airlines deal was found by Cheapflights users on 1/16. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/67:00 amONT - MSP
2 stops14h 55mAlaska Airlines
Mon 2/102:53 pmMSP - ONT
1 stop21h 45mAlaska Airlines
Deal found 1/16$298

Find flights from Ontario to Wisconsin within your budget

Customize your flight search to find flights from Ontario to Wisconsin 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 January 16, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

Wed 2/12

12:59 am-11:28 pm

1 stop20h 29m

Minneapolis St Paul

Mon 2/24

10:27 am-6:58 pm

1 stop10h 31m

$111

OntarioMilwaukee

ONT - MKE

ONTMKE

Ontario

Mon 3/3

12:59 am-9:32 am

1 stop6h 33m

Milwaukee-Mitchell

Thu 3/6

10:32 am-12:09 am

1 stop15h 37m

$140

OntarioChicago

ONT - ORD

ONTORD

Ontario

Thu 2/13

12:59 am-12:44 am

1 stop21h 45m

Chicago O'Hare Intl

Sun 2/23

7:59 pm-7:26 am

1 stop13h 27m

$160

OntarioChicago

ONT - ORD

ONTORD

Ontario

Mon 2/17

10:34 am-8:32 pm

2 stops31h 58m

Chicago O'Hare Intl

Tue 2/25

7:51 pm-3:19 pm

1 stop21h 28m

$194

OntarioChicago

ONT - ORD

ONTORD

Ontario

Sun 2/16

11:59 pm-8:23 am

1 stop6h 24m

Chicago O'Hare Intl

Thu 2/27

1:54 pm-9:02 pm

1 stop9h 08m

$247

OntarioChicago

ONT - ORD

ONTORD

Ontario

Tue 2/25

1:05 pm-11:48 pm

1 stop8h 43m

Chicago O'Hare Intl

Fri 2/28

5:45 am-11:55 am

1 stop8h 10m

$253

OntarioMadison

ONT - MSN

ONTMSN

Ontario

Wed 2/12

1:45 pm-9:27 pm

1 stop5h 42m

Madison Truax Field

Wed 2/19

3:11 pm-8:52 pm

1 stop7h 41m

$256

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

Wed 5/21

12:16 pm-12:33 am

1 stop10h 17m

Minneapolis St Paul

Sun 5/25

8:00 am-3:12 pm

1 stop9h 12m

$269

OntarioAppleton

ONT - ATW

ONTATW

Ontario

Sat 2/15

6:13 am-2:31 pm

1 stop6h 18m

Appleton Intl

Sat 2/22

1:50 pm-6:26 pm

1 stop6h 36m

$283

OntarioMadison

ONT - MSN

ONTMSN

Ontario

Sat 2/15

6:13 am-1:34 pm

1 stop5h 21m

Madison Truax Field

Sat 2/22

5:26 pm-10:16 pm

1 stop6h 50m

$284

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

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

Best time to book a flight from Ontario to Wisconsin

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

Travel insights for flights from Ontario to Wisconsin

Get recent, data-driven insights about flights from Ontario to Wisconsin including ideal travel times, pricing trends, and more.

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

Currently, February is the cheapest month in which you can book a flight from Ontario to Wisconsin (average of $280). Flying from Ontario to Wisconsin in June is currently the most expensive (average of $376). 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 ONT to WI?

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Wisconsin as you normally would.

Rainfall in Wisconsin by month

Plan your trip to Wisconsin by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Wisconsin ranges from 1.4 - 4.0 inches per month. June is typically the wettest month, when rainfall can reach 4.0 in. January is typically the driest time to visit Wisconsin when rainfall is around 1.4 in.

Temperature in Wisconsin by month

Plan your trip to Wisconsin by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Wisconsin, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

Reviews of airlines servicing Wisconsin

Get insights into the airlines that provide service to Wisconsin. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Wisconsin. Reviews last updated January 16, 2025.
Read reviews from past customers who have flown United Airlines, Delta and Alaska Airlines from Ontario to Wisconsin. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,659 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Crew

8.7

Boarding

8.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Southwest
8.1
Very good
4,659 reviews
Southwest
8.1
Very good
4,659 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Crew

8.7

Boarding

8.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Alaska Airlines
8.0
Very good
9,681 reviews
Southwest
8.1
Very good
4,659 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Crew

8.7

Boarding

8.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Delta
8.0
Very good
8,511 reviews
Southwest
8.1
Very good
4,659 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Crew

8.7

Boarding

8.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

United Airlines
7.4
Good
8,965 reviews
Southwest
8.1
Very good
4,659 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Crew

8.7

Boarding

8.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,659 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Crew

8.7

Boarding

8.2

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Related info for your journey

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

    Ontario (ONT), located 3.1 mi from the city center, is the airport you fly out of when you book flights from Ontario to Wisconsin.

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

    $55 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Alaska Airlines and American Airlines, with prices starting from $123 and $124, respectively.

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

    The most popular flight routes from Ontario to Wisconsin are Ontario - Chicago O'Hare Intl, Ontario - Minneapolis St Paul and Ontario - Milwaukee-Mitchell.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Ontario to Wisconsin (average of $280). Flying from Ontario to Wisconsin in June is currently the most expensive (average of $376). 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 Ontario to Wisconsin

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to John F Kennedy Intl flights
Los Angeles to Newark flights
Los Angeles to Dallas/Fort Worth flights
San Francisco to John F Kennedy Intl flights
Los Angeles to Honolulu flights
Los Angeles to Miami flights
Los Angeles to Seattle flights
San Francisco to Las Vegas flights
San Francisco to Seattle flights
Los Angeles to Las Vegas flights
Los Angeles to Orlando flights
Los Angeles to O'Hare Intl flights
San Francisco to Newark flights
Santa Ana to Las Vegas flights
Los Angeles to LaGuardia flights
Los Angeles to Hobby flights
Los Angeles to San Francisco flights
Burbank to Las Vegas flights
Los Angeles to Fort Lauderdale flights
San Francisco to Los Angeles flights
San Francisco to Dallas/Fort Worth flights
Los Angeles to Salt Lake City flights
San Jose to Las Vegas flights
Los Angeles to Reagan-National flights
Los Angeles to George Bush Intcntl flights
Los Angeles to Boston flights
Los Angeles to Sky Harbor Intl flights
Oakland to Las Vegas flights
Ontario to Seattle flights
San Jose to Seattle flights
Los Angeles to San Jose flights
San Francisco to Honolulu flights
Los Angeles to Denver flights
San Francisco to New Orleans flights
San Francisco to Miami flights
San Francisco to LaGuardia flights
Los Angeles to New Orleans flights
Los Angeles to Portland flights
Los Angeles to Oakland flights
Santa Ana to Seattle flights
Los Angeles to Atlanta flights
San Jose to Los Angeles flights
Ontario to Honolulu flights
San Francisco to Sky Harbor Intl flights
Los Angeles to Dulles Intl flights
Los Angeles to Baltimore flights
San Francisco to O'Hare Intl flights
Ontario to John F Kennedy Intl flights
Oakland to Los Angeles flights
Burbank to Dallas/Fort Worth flights

Top 5 airlines flying from Ontario to Wisconsin

Discover the top 5 airlines that operate flights from Ontario to Wisconsin. 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 January 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$72Average$219FlexibilityNo cancel feeOn-time62%
DeltaCheapest$254Average$472FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$263Average$506FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$288Average$552FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$326Average$412FlexibilityNo 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.