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Ontario

$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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — ONT
Aug 11 — Aug 181
Tue 8/11
Tue 8/18
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 July 12, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/126:50 am
ORD
-
ONT
1 stop11h 20m
Frontier
Mon 9/142:58 pm
ONT
-
ORD
1 stop12h 44m
Frontier
Deal found 7/10$203
This Kiwi.com deal was found by Cheapflights users on 7/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/248:11 pm
ORD
-
ONT
1 stop21h 43m
Frontier
Mon 8/318:48 am
ONT
-
ORD
2 stops19h 29m
Frontier
Deal found 7/10$207
This Kiwi.com deal was found by Cheapflights users on 7/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/252:41 pm
ORD
-
ONT
2 stops27h 13m
Frontier
Tue 10/62:58 pm
ONT
-
ORD
1 stop12h 44m
Frontier
Deal found 7/11$219
This Kiwi.com deal was found by Cheapflights users on 7/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/410:15 pm
MSP
-
ONT
1 stop13h 49m
Frontier
Tue 8/183:40 pm
ONT
-
MSP
2 stops19h 26m
Frontier
Deal found 7/11$226
This Kiwi.com deal was found by Cheapflights users on 7/9. 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.
Fri 10/21:02 pm
ORD
-
ONT
1 stop29h 08m
Frontier
Wed 10/72:58 pm
ONT
-
ORD
1 stop12h 44m
Frontier
Deal found 7/9$227
This Kiwi.com deal was found by Cheapflights users on 7/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1211:06 am
ORD
-
ONT
1 stop14h 49m
Frontier
Tue 9/152:58 pm
ONT
-
ORD
1 stop12h 44m
Frontier
Deal found 7/10$229
This American Airlines deal was found by Cheapflights users on 7/9. 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.
Wed 9/165:00 am
ORD
-
ONT
1 stop6h 29m
American Airlines
Tue 9/222:22 pm
ONT
-
ORD
1 stop7h 08m
American Airlines
Deal found 7/9$243
This American Airlines deal was found by Cheapflights users on 7/8. 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 8/225:00 am
ORD
-
ONT
1 stop6h 34m
American Airlines
Sat 8/296:15 am
ONT
-
ORD
1 stop7h 50m
American Airlines
Deal found 7/8$244
This Kiwi.com deal was found by Cheapflights users on 7/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/222:01 pm
MSP
-
ONT
1 stop11h 49m
Frontier
Sat 8/293:40 pm
ONT
-
MSP
1 stop28h 01m
Frontier
Deal found 7/11$247
This United Airlines deal was found by Cheapflights users on 7/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/248:06 pm
ORD
-
ONT
Nonstop4h 29m
United Airlines
Mon 8/317:13 pm
ONT
-
ORD
1 stop10h 03m
United Airlines
Deal found 7/11$249
This Super.com deal was found by Cheapflights users on 7/10. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/910:30 pm
MSP
-
ONT
1 stop27h 25m
Frontier
Wed 9/168:07 am
ONT
-
MSP
1 stop6h 55m
Frontier
Deal found 7/10$249
This Frontier deal was found by Cheapflights users on 7/8. 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.
Tue 9/12:01 pm
MSP
-
ONT
1 stop11h 49m
Frontier
Wed 9/98:07 am
ONT
-
MSP
1 stop6h 55m
Frontier
Deal found 7/8$250

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 July 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$200
(Kiwi.com)

One-way from

$91
(Kiwi.com)

Popular in

March

Cheapest in

August

Average price

$333
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. 2% potential increase in price ($12 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 July 12, 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

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Wed 8/19

5:40 pm-10:00 pm

1 stop6h 20m

Ontario

Sat 8/22

7:05 am-4:20 pm

1 stop7h 15m

$262

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Thu 8/13

8:06 pm-10:35 pm

Nonstop4h 29m

Ontario

Mon 8/24

1:56 pm-10:59 pm

1 stop7h 03m

$265

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 10/8

5:30 am-9:55 am

1 stop6h 25m

Ontario

Mon 10/12

1:30 pm-12:05 am

1 stop8h 35m

$268

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Tue 8/25

5:34 am-10:42 am

1 stop7h 08m

Ontario

Tue 9/1

1:06 pm-9:41 pm

1 stop6h 35m

$277

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 9/24

4:46 pm-10:26 pm

1 stop7h 40m

Ontario

Sat 9/26

1:04 pm-9:11 pm

1 stop6h 07m

$277

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Thu 12/3

12:30 pm-4:12 pm

1 stop5h 42m

Ontario

Mon 12/7

6:00 am-1:46 pm

1 stop5h 46m

$299

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Sat 9/5

10:40 am-5:20 pm

2 stops8h 40m

Ontario

Mon 9/7

11:55 pm-10:10 am

1 stop8h 15m

$306

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Wed 9/9

6:15 am-12:30 pm

2 stops8h 15m

Ontario

Wed 9/16

11:10 am-9:15 pm

2 stops8h 05m

$310
Quickest round-trip

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Thu 9/3

8:06 pm-10:35 pm

Nonstop4h 29m

Ontario

Tue 9/8

7:00 am-1:10 pm

Nonstop4h 10m

$312

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Fri 8/28

5:45 am-12:12 pm

2 stops8h 27m

Ontario

Sun 9/6

5:00 am-12:35 pm

1 stop5h 35m

$336

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/8

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, July is the cheapest month in which you can book a flight from Wisconsin to Ontario (average of $232). 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 $265, Southwest can have you in Ontario from Wisconsin in 4h 29m. 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 $102. Users have also found prices from $138 and $144 on United Airlines and Delta, 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, July is the cheapest month in which you can book a flight from Wisconsin to Ontario (average of $232). 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 July 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$288Average$441FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$316Average$476FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$323Average$483FlexibilityNo cancel feeOn-time71%
DeltaCheapest$396Average$437FlexibilityNo cancel feeOn-timeN/A

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