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$91+ 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 6/4. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MKE
abr. 22 — abr. 291
mar. 4/22
mar. 4/29
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 abril 17, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$178
(Frontier)

One-way from

$91
(CheapOair)

Popular in

December

Cheapest in

April

Average price

$366
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. 8% potential increase in price ($36 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in April 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 abril 17, 2025.

This Frontier deal was found by Cheapflights users on 4/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 4/2612:10 pmONT - MSP
1 stop10h 25mFrontier
mar. 4/296:00 amMSP - ONT
1 stop7h 20mFrontier
Deal found 4/16$178
This Frontier deal was found by Cheapflights users on 4/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 4/2512:11 pmONT - ORD
1 stop9h 26mFrontier
dom. 5/48:14 pmORD - ONT
1 stop13h 10mFrontier
Deal found 4/17$218
This United Airlines deal was found by Cheapflights users on 4/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 5/257:00 amONT - ORD
Nonstop4h 03mUnited Airlines
sáb. 5/317:55 pmORD - ONT
Nonstop4h 31mUnited Airlines
Deal found 4/17$227
This Frontier deal was found by Cheapflights users on 4/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/712:08 amONT - MKE
1 stop12h 40mFrontier
dom. 5/114:25 pmMKE - ONT
1 stop9h 34mFrontier
Deal found 4/16$238
This Alaska Airlines deal was found by Cheapflights users on 4/16. 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.
jue. 8/217:10 amONT - ORD
1 stop19h 54mAlaska Airlines
mar. 8/268:42 pmORD - ONT
1 stop16h 03mAlaska Airlines
Deal found 4/16$246
This American Airlines deal was found by Cheapflights users on 4/16. 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.
lun. 5/197:25 pmONT - ORD
1 stop7h 48mAmerican Airlines
mié. 5/286:00 amORD - ONT
1 stop7h 50mAmerican Airlines
Deal found 4/16$247
This Delta deal was found by Cheapflights users on 4/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/221:00 pmONT - ORD
1 stop7h 00mDelta
jue. 8/287:15 amORD - ONT
1 stop7h 08mDelta
Deal found 4/17$257
This CheapOair deal was found by Cheapflights users on 4/15. 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.
mié. 4/1612:59 amONT - MSN
1 stop10h 03mFrontier
dom. 4/201:52 pmMSN - ONT
1 stop21h 30mFrontier
Deal found 4/15$291
This American Airlines deal was found by Cheapflights users on 4/16. 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.
mar. 5/2012:45 pmONT - MSP
1 stop8h 45mAmerican Airlines
dom. 5/256:00 amMSP - ONT
1 stop7h 50mAmerican Airlines
Deal found 4/16$299
This Delta deal was found by Cheapflights users on 4/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/76:00 amONT - MSN
2 stops9h 43mDelta
mié. 5/146:17 pmMSN - ONT
2 stops7h 25mDelta
Deal found 4/16$299
This American Airlines deal was found by Cheapflights users on 4/16. 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.
vie. 5/910:40 pmONT - ATW
2 stops10h 16mAmerican Airlines
mié. 5/1411:26 amATW - ONT
2 stops11h 39mAmerican Airlines
Deal found 4/16$299
This CheapOair deal was found by Cheapflights users on 4/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 5/2212:59 amONT - GRB
1 stop15h 54mFrontier
lun. 5/267:48 pmGRB - ONT
1 stop6h 03mFrontier
Deal found 4/17$301

Cheapflights Fare Finder

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 abril 17, 2025.
Use the filters below to find and compare flights from Ontario to Wisconsin that are best for you.

Fly from

Ontario

Fly to

Wisconsin

Route

Depart

Return

Price

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

mar. 4/29

12:10 pm-12:35 am

1 stop10h 25m

Minneapolis St Paul

mié. 4/30

6:00 am-11:20 am

1 stop7h 20m

$178

OntarioChicago

ONT - ORD

ONTORD

Ontario

lun. 4/28

2:42 pm-5:14 am

1 stop12h 32m

Chicago O'Hare Intl

jue. 5/1

8:14 pm-7:24 am

1 stop13h 10m

$218

OntarioChicago

ONT - ORD

ONTORD

Ontario

sáb. 7/26

7:00 am-1:03 pm

Nonstop4h 03m

Chicago O'Hare Intl

jue. 7/31

7:40 pm-10:11 pm

Nonstop4h 31m

$227

OntarioMilwaukee

ONT - MKE

ONTMKE

Ontario

mié. 5/7

12:08 am-2:48 pm

1 stop12h 40m

Milwaukee-Mitchell

dom. 5/11

4:25 pm-11:59 pm

1 stop9h 34m

$238

OntarioChicago

ONT - ORD

ONTORD

Ontario

jue. 8/21

7:10 am-5:04 am

1 stop19h 54m

Chicago O'Hare Intl

mar. 8/26

8:42 pm-10:45 am

1 stop16h 03m

$246

OntarioChicago

ONT - ORD

ONTORD

Ontario

lun. 5/19

11:59 pm-11:08 am

1 stop9h 09m

Chicago O'Hare Intl

jue. 5/29

1:34 pm-9:05 pm

1 stop9h 31m

$247

OntarioChicago

ONT - ORD

ONTORD

Ontario

vie. 8/22

1:00 pm-10:00 pm

1 stop7h 00m

Chicago O'Hare Intl

jue. 8/28

7:15 am-12:23 pm

1 stop7h 08m

$257

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

mar. 5/20

12:45 pm-11:30 pm

1 stop8h 45m

Minneapolis St Paul

dom. 5/25

6:00 am-11:50 am

1 stop7h 50m

$299

OntarioMadison

ONT - MSN

ONTMSN

Ontario

mié. 5/7

6:00 am-5:43 pm

2 stops9h 43m

Madison Truax Field

mié. 5/14

6:17 pm-11:42 pm

2 stops7h 25m

$299

OntarioAppleton

ONT - ATW

ONTATW

Ontario

vie. 5/9

10:40 pm-10:56 am

2 stops10h 16m

Appleton Intl

mié. 5/14

11:26 am-9:05 pm

2 stops11h 39m

$299

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

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.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Wisconsin

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 abril 17, 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 abril 17, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest 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.
Alaska Airlines
8.0
Very good
9,882 reviews

Entertainment

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,882 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Entertainment

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,280 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Entertainment

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,917 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Entertainment

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,382 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Entertainment

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,667 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Entertainment

7.1

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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?

    $91 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 $123, 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 abril 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$72Average$231FlexibilityNo cancel feeOn-time62%
DeltaCheapest$254Average$435FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$263Average$506FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$288Average$529FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$326Average$426FlexibilityNo cancel feeOn-time63%

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