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$54+ 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 4/2. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MKE
févr. 25 — mars 41
mar. 2/25
mar. 3/4
1 adult, Economy
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Cheap flight deals from Ontario to Wisconsin

Keep the following information in mind while searching for Ontario to Wisconsin flight deals. Data was last updated février 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$120
(CheapOair)

One-way from

$54
(Trip.com)

Popular in

December

Cheapest in

April

Average price

$407
Provider with most accurate pricing for Los Angeles-Milwaukee-Mitchell flight deals.
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From Ontario to Wisconsin
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One-way flight from Ontario to Wisconsin
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Highest demand for flights based on searches. 5% potential increase in price ($25 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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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 février 20, 2025.

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.
mar. 2/2512:59 amONT - MSP
1 stop8h 00mFrontier
mer. 3/512:19 pmMSP - ONT
1 stop13h 47mFrontier
Deal found 2/19$111
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 3/512:59 amONT - MKE
1 stop6h 33mFrontier
jeu. 3/1310:32 amMKE - ONT
1 stop15h 37mFrontier
Deal found 2/19$130
This Booking.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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 3/712:59 amONT - ORD
1 stop10h 21mFrontier
mar. 3/116:45 amORD - ONT
1 stop19h 19mFrontier
Deal found 2/19$135
This Frontier deal was found by Cheapflights users on 2/20. 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.
sam. 3/812:59 amONT - MSN
1 stop9h 05mFrontier
jeu. 3/132:04 pmMSN - ONT
1 stop12h 05mFrontier
Deal found 2/20$164
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 6/217:00 amONT - ORD
Nonstop3h 58mUnited Airlines
mar. 6/248:20 pmORD - ONT
Nonstop4h 31mUnited Airlines
Deal found 2/18$227
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/611:46 amONT - ORD
1 stop10h 13mMultiple Airlines
jeu. 5/87:00 amORD - ONT
1 stop12h 47mMultiple Airlines
Deal found 2/19$229
This Delta deal was found by Cheapflights users on 2/20. 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.
ven. 3/215:30 pmONT - MSP
1 stop10h 40mDelta
dim. 3/239:35 pmMSP - ONT
1 stop21h 07mDelta
Deal found 2/20$243
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/612:46 pmONT - ORD
1 stop6h 23mAmerican Airlines
sam. 5/107:00 amORD - ONT
1 stop6h 54mAmerican Airlines
Deal found 2/19$247
This Delta deal was found by Cheapflights users on 2/20. 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.
mer. 4/235:15 pmONT - ORD
1 stop5h 38mDelta
lun. 4/287:50 amORD - ONT
1 stop8h 05mDelta
Deal found 2/20$257
This American Airlines deal was found by Cheapflights users on 2/20. 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.
ven. 3/143:00 pmONT - MSN
1 stop6h 13mAmerican Airlines
dim. 3/165:53 pmMSN - ONT
1 stop6h 07mAmerican Airlines
Deal found 2/20$289
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 10/3011:30 amONT - ORD
1 stop10h 29mAlaska Airlines
jeu. 11/610:00 amORD - ONT
1 stop10h 17mAlaska Airlines
Deal found 2/19$303
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.
jeu. 2/204:19 pmONT - MSP
1 stop5h 09mMultiple Airlines
jeu. 2/275:47 amMSP - ONT
1 stop16h 48mMultiple Airlines
Deal found 2/19$318

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 février 20, 2025.

Fly from

Ontario

Fly to

Wisconsin

Route

Depart

Return

Price

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

mer. 4/9

12:59 am-11:33 pm

1 stop20h 34m

Minneapolis St Paul

mar. 4/15

6:00 am-11:59 pm

1 stop19h 59m

$120

OntarioMilwaukee

ONT - MKE

ONTMKE

Ontario

mer. 3/5

12:59 am-9:32 am

1 stop6h 33m

Milwaukee-Mitchell

jeu. 3/13

10:32 am-12:09 am

1 stop15h 37m

$130

OntarioChicago

ONT - ORD

ONTORD

Ontario

ven. 3/7

12:59 am-1:20 pm

1 stop10h 21m

Chicago O'Hare Intl

mar. 3/11

6:45 am-12:04 am

1 stop19h 19m

$135

OntarioMadison

ONT - MSN

ONTMSN

Ontario

sam. 3/8

12:59 am-1:04 pm

1 stop9h 05m

Madison Truax Field

jeu. 3/13

2:04 pm-12:09 am

1 stop12h 05m

$164

OntarioChicago

ONT - ORD

ONTORD

Ontario

jeu. 4/24

6:24 pm-6:05 am

1 stop9h 41m

Chicago O'Hare Intl

lun. 4/28

11:41 am-5:24 pm

1 stop7h 43m

$224

OntarioChicago

ONT - ORD

ONTORD

Ontario

sam. 6/21

7:00 am-12:58 pm

Nonstop3h 58m

Chicago O'Hare Intl

mar. 6/24

8:20 pm-10:51 pm

Nonstop4h 31m

$227

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

ven. 3/21

5:30 pm-6:10 am

1 stop10h 40m

Minneapolis St Paul

dim. 3/23

9:35 pm-4:42 pm

1 stop21h 07m

$243

OntarioChicago

ONT - ORD

ONTORD

Ontario

mer. 3/26

7:35 pm-5:08 am

1 stop7h 33m

Chicago O'Hare Intl

dim. 3/30

5:00 am-10:07 am

1 stop7h 07m

$247

OntarioChicago

ONT - ORD

ONTORD

Ontario

mer. 4/23

5:15 pm-12:53 am

1 stop5h 38m

Chicago O'Hare Intl

lun. 4/28

7:50 am-1:55 pm

1 stop8h 05m

$257

OntarioMadison

ONT - MSN

ONTMSN

Ontario

ven. 3/14

3:00 pm-11:13 pm

1 stop6h 13m

Madison Truax Field

dim. 3/16

5:53 pm-10:00 pm

1 stop6h 07m

$289

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 60 results
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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 février 20, 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 février 20, 2025.
Read reviews from past customers who have flown Southwest, Alaska Airlines and Delta 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
4,411 reviews

Crew

8.7

Overall

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Comfort

8.1

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

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
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Overall

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Comfort

8.1

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

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
9,697 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Overall

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Comfort

8.1

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

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
8,219 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Overall

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Comfort

8.1

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

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

Hawaiian Airlines
7.9
Good
2,317 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Overall

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Comfort

8.1

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

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

JetBlue
7.4
Good
3,070 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Overall

8.1

Boarding

8.2

Entertainment

7.6

Food

7.1

Comfort

8.1

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

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?

    $54 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on United Airlines and Alaska Airlines, with prices starting from $114 and $127, 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

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Alternative routes for Ontario to Wisconsin

See prices for flight routes from nearby airports that may be better suited for you.
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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 février 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$72Average$223FlexibilityNo cancel feeOn-time62%
DeltaCheapest$254Average$437FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$263Average$501FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$288Average$557FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$326Average$442FlexibilityNo cancel feeOn-time63%
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