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Ontario

$80+ 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 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — ONT
Apr 30 — May 71
Wed 4/30
Wed 5/7
1 adult, Economy
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Cheap flight deals from Wisconsin to Ontario

Keep the following information in mind while searching for Wisconsin to Ontario flight deals. Data was last updated April 25, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$181
(CheapOair)

One-way from

$80
(Trip.com)

Popular in

March

Cheapest in

August

Average price

$395
Provider with most accurate pricing for Milwaukee-Mitchell-Los Angeles flight deals.
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Provider most trusted by Cheapflights users for Milwaukee-Mitchell-Los Angeles flights.
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From Wisconsin to Ontario
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One-way flight from Wisconsin to Ontario
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Highest demand for flights based on searches. 8% potential increase in price ($35 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($13 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 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 April 25, 2025.

This CheapOair deal was found by Cheapflights users on 4/23. 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.
Wed 4/306:00 amMSP - ONT
1 stop7h 20mFrontier
Tue 5/612:59 amONT - MSP
1 stop21h 34mFrontier
Deal found 4/23$181
This FlightHub deal was found by Cheapflights users on 4/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/309:50 pmORD - ONT
1 stop20h 30mFrontier
Sun 6/112:59 amONT - ORD
1 stop21h 00mFrontier
Deal found 4/25$217
This Frontier deal was found by Cheapflights users on 4/25. 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 5/83:48 pmMKE - ONT
1 stop10h 11mFrontier
Sat 5/1012:59 amONT - MKE
1 stop12h 26mFrontier
Deal found 4/25$238
This American Airlines deal was found by Cheapflights users on 4/25. 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 5/2411:27 amGRB - ONT
2 stops11h 38mAmerican Airlines
Sat 5/3110:51 amONT - GRB
2 stops10h 19mAmerican Airlines
Deal found 4/25$239
This Alaska Airlines deal was found by Cheapflights users on 4/23. 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.
Wed 6/43:17 pmORD - ONT
1 stop9h 29mAlaska Airlines
Tue 6/107:20 pmONT - ORD
1 stop8h 20mAlaska Airlines
Deal found 4/23$246
This American Airlines deal was found by Cheapflights users on 4/25. 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 7/17:35 amORD - ONT
1 stop6h 25mAmerican Airlines
Tue 7/154:45 pmONT - ORD
1 stop5h 52mAmerican Airlines
Deal found 4/25$247
This Trip.com deal was found by Cheapflights users on 4/24. 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.
Fri 6/277:20 pmORD - ONT
1 stop6h 26mDelta
Sat 7/51:15 pmONT - ORD
1 stop6h 54mDelta
Deal found 4/24$252
This United Airlines deal was found by Cheapflights users on 4/23. 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 6/117:55 pmORD - ONT
Nonstop4h 31mUnited Airlines
Sun 6/156:41 pmONT - ORD
1 stop8h 23mUnited Airlines
Deal found 4/23$273
This Trip.com deal was found by Cheapflights users on 4/25. 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.
Fri 5/97:54 pmMKE - ONT
1 stop13h 30mMultiple Airlines
Sat 5/1012:59 amONT - MKE
1 stop12h 26mMultiple Airlines
Deal found 4/25$273
This Trip.com deal was found by Cheapflights users on 4/25. 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.
Sat 5/248:30 amMSP - ONT
1 stop14h 19mMultiple Airlines
Mon 6/212:59 amONT - MSP
1 stop21h 45mMultiple Airlines
Deal found 4/25$282
This Hawaiian Airlines deal was found by Cheapflights users on 4/25. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/186:24 amORD - ONT
1 stop9h 42mHawaiian Airlines
Sun 9/217:17 pmONT - ORD
1 stop8h 23mHawaiian Airlines
Deal found 4/25$286
This Expedia deal was found by Cheapflights users on 4/23. 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.
Wed 5/149:00 amORD - ONT
1 stop8h 32mMultiple Airlines
Fri 5/1612:16 pmONT - ORD
1 stop9h 25mMultiple Airlines
Deal found 4/23$287

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 April 25, 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

Tue 5/13

7:00 am-11:59 pm

1 stop18h 59m

Ontario

Mon 5/19

12:59 am-11:14 pm

1 stop20h 15m

$181

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Fri 5/30

9:50 pm-4:20 pm

1 stop20h 30m

Ontario

Mon 6/2

6:00 am-9:01 pm

1 stop13h 01m

$217

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Sun 6/1

7:55 pm-10:26 pm

Nonstop4h 31m

Ontario

Wed 6/4

7:00 am-1:03 pm

Nonstop4h 03m

$227

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 5/8

3:48 pm-11:59 pm

1 stop10h 11m

Ontario

Sat 5/10

12:59 am-3:25 pm

1 stop12h 26m

$238

Green BayOntario

GRB - ONT

GRBONT

Green Bay Austin-Straubel

Sat 5/24

11:27 am-9:05 pm

2 stops11h 38m

Ontario

Sat 5/31

10:51 am-11:10 pm

2 stops10h 19m

$239

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Wed 6/4

3:17 pm-10:46 pm

1 stop9h 29m

Ontario

Tue 6/10

7:20 pm-5:40 am

1 stop8h 20m

$246

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Tue 7/1

7:35 am-12:00 pm

1 stop6h 25m

Ontario

Tue 7/15

4:45 pm-12:37 am

1 stop5h 52m

$247

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Fri 6/27

7:20 pm-11:46 pm

1 stop6h 26m

Ontario

Sat 7/5

1:15 pm-10:09 pm

1 stop6h 54m

$252

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Fri 5/9

7:54 pm-7:24 am

1 stop13h 30m

Ontario

Sat 5/10

12:59 am-3:25 pm

1 stop12h 26m

$273

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Sat 5/24

8:30 am-8:49 pm

1 stop14h 19m

Ontario

Mon 6/2

12:59 am-12:44 am

1 stop21h 45m

$282

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/23

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, August is the cheapest month in which you can book a flight from Wisconsin to Ontario (average of $246). Flying from Wisconsin to Ontario in March is currently the most expensive (average of $328). 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 April 25, 2025.

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

Rainfall in Ontario by month

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

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

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

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated April 25, 2025.
To help decide which airline to fly from Wisconsin to Ontario, see what other customers have to say about Alaska Airlines, Southwest and Delta. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,928 reviews

Food

7.1

Crew

8.5

Entertainment

7.1

Comfort

7.9

Overall

8.0

Boarding

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,928 reviews
Alaska Airlines
8.0
Very good
9,928 reviews

Food

7.1

Crew

8.5

Entertainment

7.1

Comfort

7.9

Overall

8.0

Boarding

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
9,928 reviews

Food

7.1

Crew

8.5

Entertainment

7.1

Comfort

7.9

Overall

8.0

Boarding

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,920 reviews
Alaska Airlines
8.0
Very good
9,928 reviews

Food

7.1

Crew

8.5

Entertainment

7.1

Comfort

7.9

Overall

8.0

Boarding

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Hawaiian Airlines
7.9
Good
2,395 reviews
Alaska Airlines
8.0
Very good
9,928 reviews

Food

7.1

Crew

8.5

Entertainment

7.1

Comfort

7.9

Overall

8.0

Boarding

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,685 reviews
Alaska Airlines
8.0
Very good
9,928 reviews

Food

7.1

Crew

8.5

Entertainment

7.1

Comfort

7.9

Overall

8.0

Boarding

8.2

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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.

  • 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 $80. Users have also found prices from $114 and $123 on United Airlines and Hawaiian 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, August is the cheapest month in which you can book a flight from Wisconsin to Ontario (average of $246). Flying from Wisconsin to Ontario in March is currently the most expensive (average of $328). 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 5 airlines flying from Wisconsin to Ontario

Discover the top 5 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 April 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$127Average$203FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$238Average$408FlexibilityNo cancel feeOn-time71%
DeltaCheapest$276Average$433FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$298Average$515FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$330Average$423FlexibilityNo cancel feeOn-time63%

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