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$101+ 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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — ONT
may. 17 — may. 241
sáb. 5/17
sáb. 5/24
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 12, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$205
(Mytrip)

One-way from

$101
(Trip.com)

Popular in

March

Cheapest in

August

Average price

$363
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 ($36 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($12 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 12, 2025.

This Frontier deal was found by Cheapflights users on 5/12. 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. 5/176:00 amMSP - ONT
1 stop19h 59mFrontier
sáb. 5/245:21 pmONT - MSP
1 stop5h 16mFrontier
Deal found 5/12$201
This Mytrip deal was found by Cheapflights users on 5/11. 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.
sáb. 5/246:00 amORD - ONT
1 stop29h 15mFrontier
vie. 5/3012:59 amONT - ORD
1 stop20h 53mFrontier
Deal found 5/11$205
This United Airlines deal was found by Cheapflights users on 5/10. 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. 7/177:35 pmORD - ONT
Nonstop4h 31mUnited Airlines
dom. 7/277:00 amONT - ORD
Nonstop4h 03mUnited Airlines
Deal found 5/10$227
This FlightHub deal was found by Cheapflights users on 5/12. 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.
dom. 5/257:48 pmMSN - ONT
1 stop6h 03mFrontier
mié. 5/285:21 pmONT - MSN
1 stop23h 32mFrontier
Deal found 5/12$240
This CheapOair deal was found by Cheapflights users on 5/12. 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.
vie. 6/67:56 pmMKE - ONT
1 stop15h 16mFrontier
dom. 6/812:59 amONT - MKE
1 stop16h 12mFrontier
Deal found 5/12$241
This Alaska Airlines deal was found by Cheapflights users on 5/11. 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. 8/196:00 amORD - ONT
1 stop9h 26mAlaska Airlines
mar. 8/2611:39 amONT - ORD
1 stop10h 20mAlaska Airlines
Deal found 5/11$246
This American Airlines deal was found by Cheapflights users on 5/11. 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. 6/1011:55 amORD - ONT
1 stop9h 06mAmerican Airlines
sáb. 6/142:40 pmONT - ORD
1 stop8h 19mAmerican Airlines
Deal found 5/11$247
This Delta deal was found by Cheapflights users on 5/11. 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. 8/206:00 amORD - ONT
1 stop7h 07mDelta
vie. 8/291:00 pmONT - ORD
1 stop7h 00mDelta
Deal found 5/11$257
This Southwest deal was found by Cheapflights users on 5/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/112:40 pmORD - ONT
1 stop10h 10mSouthwest
lun. 8/45:00 amONT - ORD
1 stop9h 45mSouthwest
Deal found 5/12$258
This Delta deal was found by Cheapflights users on 5/11. 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. 7/25:35 amATW - ONT
1 stop7h 22mDelta
mié. 7/911:50 amONT - ATW
1 stop8h 41mDelta
Deal found 5/11$282
This Booking.com deal was found by Cheapflights users on 5/11. 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.
lun. 5/127:47 pmGRB - ONT
1 stop6h 12mFrontier
dom. 5/1812:59 amONT - GRB
1 stop15h 58mFrontier
Deal found 5/11$285
This Hawaiian Airlines deal was found by Cheapflights users on 5/11. 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. 8/76:00 amORD - ONT
1 stop9h 26mHawaiian Airlines
vie. 8/227:22 pmONT - ORD
1 stop9h 41mHawaiian Airlines
Deal found 5/11$286

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 12, 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

sáb. 5/24

5:21 pm-12:37 am

1 stop5h 16m

$201

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

sáb. 5/24

6:00 am-9:15 am

1 stop29h 15m

Ontario

vie. 5/30

12:59 am-11:52 pm

1 stop20h 53m

$205

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

jue. 7/17

7:35 pm-10:06 pm

Nonstop4h 31m

Ontario

dom. 8/3

7:00 am-1:03 pm

Nonstop4h 03m

$227

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

dom. 5/25

7:48 pm-11:51 pm

1 stop6h 03m

Ontario

mié. 5/28

5:21 pm-6:53 pm

1 stop23h 32m

$240

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

vie. 6/6

7:56 pm-9:12 am

1 stop15h 16m

Ontario

dom. 6/8

12:59 am-7:11 pm

1 stop16h 12m

$241

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

mar. 8/19

6:00 am-1:26 pm

1 stop9h 26m

Ontario

mar. 8/26

11:39 am-11:59 pm

1 stop10h 20m

$246

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

mar. 7/1

3:35 pm-9:38 pm

1 stop8h 03m

Ontario

lun. 7/14

12:59 am-9:50 am

1 stop6h 51m

$247

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

mié. 8/20

3:35 pm-10:29 pm

1 stop8h 54m

Ontario

dom. 8/24

7:00 am-5:50 pm

1 stop8h 50m

$257

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

mié. 7/2

5:35 am-10:57 am

1 stop7h 22m

Ontario

mié. 7/9

11:50 am-10:31 pm

1 stop8h 41m

$282

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

jue. 8/7

6:00 am-1:26 pm

1 stop9h 26m

Ontario

vie. 8/22

7:22 pm-7:03 am

1 stop9h 41m

$286

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/11

Showing 1-10 of 59 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 12, 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 12, 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
10,000 reviews

Comfort

7.9

Boarding

8.1

Entertainment

7.1

Overall

8.0

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
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.9

Boarding

8.1

Entertainment

7.1

Overall

8.0

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
4,290 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.9

Boarding

8.1

Entertainment

7.1

Overall

8.0

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
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.9

Boarding

8.1

Entertainment

7.1

Overall

8.0

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
2,431 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.9

Boarding

8.1

Entertainment

7.1

Overall

8.0

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
8,724 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.9

Boarding

8.1

Entertainment

7.1

Overall

8.0

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 $105. Users have also found prices from $114 and $123 on United Airlines and Alaska 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 mayo 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$127Average$203FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$238Average$409FlexibilityNo cancel feeOn-time71%
DeltaCheapest$276Average$433FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$298Average$512FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$330Average$420FlexibilityNo cancel feeOn-time63%

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