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$66+ 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 5/27. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — ONT
Mai 21 — Mai 281
Do 5/21
Do 5/28
1 adult, Economy
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Cheap 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 21, 2026.

This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 5/94:05 pm
ORD
-
ONT
1 stop17h 30m
Frontier
Mi 5/1310:50 am
ONT
-
ORD
1 stop7h 42m
Frontier
Deal found 4/17$152
This Expedia deal was found by Cheapflights users on 4/19. 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.
Mo 5/119:37 pm
ORD
-
ONT
1 stop14h 28m
Frontier
Fr 5/158:06 pm
ONT
-
ORD
1 stop24h 55m
Frontier
Deal found 4/19$160
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mi 5/610:14 am
MSP
-
ONT
1 stop15h 35m
Frontier
Di 5/1210:50 am
ONT
-
MSP
1 stop20h 29m
Frontier
Deal found 4/16$160
This Booking.com deal was found by Cheapflights users on 4/19. 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.
Mi 5/134:05 pm
ORD
-
ONT
1 stop17h 30m
Frontier
Fr 5/158:06 pm
ONT
-
ORD
1 stop24h 55m
Frontier
Deal found 4/19$162
This Booking.com deal was found by Cheapflights users on 4/20. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Di 5/1210:14 am
MSP
-
ONT
1 stop25h 51m
Frontier
Di 5/196:00 am
ONT
-
MSP
1 stop25h 19m
Frontier
Deal found 4/20$162
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Di 5/54:06 pm
ORD
-
ONT
1 stop17h 29m
Multiple Airlines
Mi 5/1310:50 am
ONT
-
ORD
1 stop7h 42m
Multiple Airlines
Deal found 4/17$163
This Trip.com deal was found by Cheapflights users on 4/18. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mi 5/612:40 pm
ORD
-
ONT
1 stop8h 31m
Frontier
Di 5/1210:50 am
ONT
-
ORD
1 stop7h 42m
Frontier
Deal found 4/18$164
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mi 5/610:14 am
MSP
-
ONT
1 stop15h 35m
Frontier
Mi 5/1310:50 am
ONT
-
MSP
1 stop20h 29m
Frontier
Deal found 4/16$164
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mi 5/612:40 pm
ORD
-
ONT
1 stop8h 31m
Frontier
Mi 5/1310:50 am
ONT
-
ORD
1 stop7h 42m
Frontier
Deal found 4/16$166
This Booking.com deal was found by Cheapflights users on 4/18. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sa 5/99:37 pm
ORD
-
ONT
1 stop14h 28m
Frontier
Di 5/1210:50 am
ONT
-
ORD
1 stop7h 42m
Frontier
Deal found 4/18$167
This CheapOair deal was found by Cheapflights users on 4/18. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mo 5/119:39 pm
MSP
-
ONT
1 stop14h 26m
Frontier
Di 5/196:00 am
ONT
-
MSP
1 stop25h 19m
Frontier
Deal found 4/18$171
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mi 5/610:14 am
MSP
-
ONT
1 stop15h 35m
Frontier
Sa 5/910:50 am
ONT
-
MSP
1 stop7h 54m
Frontier
Deal found 4/16$177

Find 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 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$152
(Kiwi.com)

One-way from

$66
(Trip.com)

Popular in

December

Cheapest in

July

Average price

$404
Provider with most accurate pricing for Milwaukee-Mitchell-Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for Milwaukee-Mitchell-Los Angeles flights.
Search Deals
From Wisconsin to Ontario
Search Deals
One-way flight from Wisconsin to Ontario
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($42 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

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 21, 2026.
Use the filters below to find and compare flights from Wisconsin to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Di 5/12

8:09 pm-10:35 pm

Nonstop4h 26m

Ontario

Sa 5/16

7:00 am-12:59 pm

Nonstop3h 59m

$320

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Mo 8/24

1:26 pm-11:44 pm

2 stops12h 18m

Ontario

Sa 8/29

7:00 am-8:40 pm

2 stops11h 40m

$379

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Mi 5/6

5:30 am-11:36 am

1 stop8h 06m

Ontario

Di 5/12

12:08 pm-10:48 pm

1 stop8h 40m

$394

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Fr 5/1

1:30 pm-11:55 pm

1 stop12h 25m

Ontario

Fr 5/8

10:50 am-8:44 pm

1 stop7h 54m

$395

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Sa 5/23

5:25 pm-9:20 pm

1 stop5h 55m

Ontario

Mi 6/3

6:55 am-2:10 pm

1 stop5h 15m

$397

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Mi 9/30

10:55 am-6:01 pm

2 stops9h 06m

Ontario

Mi 10/7

12:00 pm-9:58 pm

1 stop7h 58m

$399

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Do 5/21

3:53 pm-10:51 pm

1 stop8h 58m

Ontario

Mo 5/25

5:00 am-2:08 pm

1 stop7h 08m

$417

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Di 6/2

6:54 pm-11:56 pm

1 stop7h 02m

Ontario

Di 6/9

6:00 am-5:58 pm

1 stop9h 58m

$418

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Mi 5/6

5:30 am-11:36 am

1 stop8h 06m

Ontario

Sa 5/9

12:07 pm-10:48 pm

1 stop8h 41m

$419

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Di 6/23

12:29 pm-4:42 pm

1 stop6h 13m

Ontario

Mo 7/6

5:24 pm-12:42 am

1 stop5h 18m

$422

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/18

Showing 1-10 of 60 resultsSorted by cheapest first
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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, June is the cheapest month in which you can book a flight from Wisconsin to Ontario (average of $118). Flying from Wisconsin to Ontario in February is currently the most expensive (average of $340). 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.

How much does it cost to fly round-trip from Wisconsin to Ontario?

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.

  • How long is the flight from Wisconsin to Ontario?

    For as low as $320, United Airlines can have you in Ontario from Wisconsin in 4h 26m. The distance between Wisconsin and Ontario is about 1695 mi. This flight may include one or multiple stops.

  • 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 $99. Users have also found prices from $138 and $143 on United Airlines and American 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 Madison Truax Field - 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, June is the cheapest month in which you can book a flight from Wisconsin to Ontario (average of $118). Flying from Wisconsin to Ontario in February is currently the most expensive (average of $340). 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 4 airlines flying from Wisconsin to Ontario

Discover the top 4 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 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$288Average$440FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$288Average$440FlexibilityNo cancel feeOn-time71%
DeltaCheapest$300Average$407FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$316Average$444FlexibilityNo cancel feeOn-time63%

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