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$91+ 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 6/4. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — ONT
may. 6 — may. 131
mar. 5/6
mar. 5/13
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 mayo 1, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$196
(Cheapflightsfares)

One-way from

$91
(Trip.com)

Popular in

March

Cheapest in

August

Average price

$372
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 May 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 mayo 1, 2025.

This Mytrip deal was found by Cheapflights users on 4/30. 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.
mié. 5/77:26 amMSP - ONT
1 stop17h 42mFrontier
vie. 5/1612:59 amONT - MSP
1 stop21h 29mFrontier
Deal found 4/30$206
This Booking.com deal was found by Cheapflights users on 4/30. 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.
mié. 5/286:00 amORD - ONT
1 stop29h 15mFrontier
vie. 5/3012:59 amONT - ORD
1 stop20h 53mFrontier
Deal found 4/30$208
This United Airlines deal was found by Cheapflights users on 4/30. 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.
jue. 6/57:55 pmORD - ONT
Nonstop4h 31mUnited Airlines
mié. 6/116:41 pmONT - ORD
1 stop8h 48mUnited Airlines
Deal found 4/30$237
This Frontier deal was found by Cheapflights users on 5/1. 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.
jue. 5/153:48 pmMKE - ONT
1 stop10h 11mFrontier
sáb. 5/1712:59 amONT - MKE
1 stop12h 26mFrontier
Deal found 5/1$238
This Alaska Airlines deal was found by Cheapflights users on 4/30. 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.
mar. 9/96:20 amORD - ONT
1 stop9h 49mAlaska Airlines
sáb. 11/86:55 pmONT - ORD
1 stop8h 09mAlaska Airlines
Deal found 4/30$246
This American Airlines deal was found by Cheapflights users on 4/30. 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.
sáb. 6/144:56 pmORD - ONT
1 stop9h 03mAmerican Airlines
mar. 7/112:55 pmONT - ORD
1 stop7h 36mAmerican Airlines
Deal found 4/30$247
This Booking.com deal was found by Cheapflights users on 4/28. 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.
jue. 5/157:42 pmMSN - ONT
1 stop6h 17mFrontier
sáb. 5/1712:59 amONT - MSN
1 stop16h 07mFrontier
Deal found 4/28$248
This Delta deal was found by Cheapflights users on 4/30. 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.
sáb. 9/131:16 pmORD - ONT
1 stop8h 26mDelta
mar. 11/410:59 pmONT - ORD
1 stop7h 35mDelta
Deal found 4/30$257
This Delta deal was found by Cheapflights users on 4/29. 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.
dom. 8/315:45 amMSN - ONT
1 stop7h 22mDelta
lun. 9/810:59 pmONT - MSN
1 stop9h 16mDelta
Deal found 4/29$283
This Hawaiian Airlines deal was found by Cheapflights users on 4/30. 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.
jue. 8/216:20 amORD - ONT
1 stop9h 49mHawaiian Airlines
lun. 8/2511:39 amONT - ORD
1 stop10h 20mHawaiian Airlines
Deal found 4/30$286
This United Airlines deal was found by Cheapflights users on 4/29. 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.
mar. 7/13:20 pmMSP - ONT
1 stop9h 32mUnited Airlines
mar. 7/87:00 amONT - MSP
1 stop7h 19mUnited Airlines
Deal found 4/29$299
This Delta deal was found by Cheapflights users on 4/30. 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.
mar. 5/274:56 pmMKE - ONT
1 stop7h 33mDelta
mar. 6/31:10 pmONT - MKE
1 stop6h 28mDelta
Deal found 4/30$307

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 mayo 1, 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

sáb. 5/17

6:00 am-11:59 pm

1 stop19h 59m

Ontario

lun. 5/19

12:59 am-11:14 pm

1 stop20h 15m

$207

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

mié. 5/28

6:00 am-9:15 am

1 stop29h 15m

Ontario

vie. 5/30

12:59 am-11:52 pm

1 stop20h 53m

$208

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

jue. 6/5

7:55 pm-10:26 pm

Nonstop4h 31m

Ontario

mié. 6/11

6:41 pm-5:29 am

1 stop8h 48m

$237

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

jue. 5/15

3:48 pm-11:59 pm

1 stop10h 11m

Ontario

sáb. 5/17

12:59 am-3:25 pm

1 stop12h 26m

$238

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

jue. 5/15

7:42 pm-11:59 pm

1 stop6h 17m

Ontario

sáb. 5/17

12:59 am-7:06 pm

1 stop16h 07m

$244

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

mar. 9/9

6:20 am-2:09 pm

1 stop9h 49m

Ontario

sáb. 11/8

6:55 pm-5:04 am

1 stop8h 09m

$246

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

sáb. 6/14

5:36 pm-11:59 pm

1 stop8h 23m

Ontario

vie. 6/20

12:59 am-10:10 am

1 stop7h 11m

$247

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

sáb. 9/13

1:16 pm-7:42 pm

1 stop8h 26m

Ontario

mar. 11/4

10:59 pm-8:34 am

1 stop7h 35m

$257

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

dom. 8/31

5:45 am-11:07 am

1 stop7h 22m

Ontario

lun. 9/8

10:59 pm-10:15 am

1 stop9h 16m

$283

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

jue. 8/21

6:20 am-2:09 pm

1 stop9h 49m

Ontario

lun. 8/25

11:39 am-11:59 pm

1 stop10h 20m

$286

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

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 mayo 1, 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 mayo 1, 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
9,972 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.9

Boarding

8.1

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
9,972 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.9

Boarding

8.1

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,294 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.9

Boarding

8.1

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,934 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.9

Boarding

8.1

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,408 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.9

Boarding

8.1

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,696 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Overall

8.0

Entertainment

7.1

Comfort

7.9

Boarding

8.1

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 $97. Users have also found prices from $114 and $119 on United 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, 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 mayo 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$127Average$203FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$238Average$410FlexibilityNo cancel feeOn-time71%
DeltaCheapest$276Average$433FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$298Average$515FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$330Average$424FlexibilityNo cancel feeOn-time63%

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