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$100+ 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 7/29. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — ONT
jul.. 15 — jul.. 221
dc. 7/15
dc. 7/22
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 juny 15, 2026.

This Kiwi.com deal was found by Cheapflights users on 6/13. 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.
dt. 9/19:48 pm
ORD
-
ONT
1 stop14h 17m
Frontier
dt. 9/156:00 am
ONT
-
ORD
1 stop13h 35m
Frontier
Deal found 6/13$171
This Kiwi.com deal was found by Cheapflights users on 6/13. 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.
dc. 9/29:48 pm
ORD
-
ONT
1 stop28h 01m
Frontier
dt. 9/156:00 am
ONT
-
ORD
1 stop13h 35m
Frontier
Deal found 6/13$185
This Kiwi.com deal was found by Cheapflights users on 6/13. 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.
dl. 8/319:48 pm
ORD
-
ONT
1 stop28h 01m
Frontier
dt. 9/156:00 am
ONT
-
ORD
1 stop13h 35m
Frontier
Deal found 6/13$209
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
dc. 8/199:48 pm
ORD
-
ONT
1 stop14h 17m
Frontier
dt. 8/2510:50 am
ONT
-
ORD
1 stop8h 03m
Frontier
Deal found 6/15$212
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
dt. 8/189:48 pm
ORD
-
ONT
1 stop14h 17m
Frontier
dt. 8/256:00 am
ONT
-
ORD
1 stop12h 53m
Frontier
Deal found 6/15$224
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
dl. 8/249:48 pm
ORD
-
ONT
1 stop14h 17m
Frontier
dt. 9/110:50 am
ONT
-
ORD
1 stop8h 03m
Frontier
Deal found 6/15$225
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
dg. 8/239:48 pm
ORD
-
ONT
1 stop14h 17m
Frontier
dt. 9/16:00 am
ONT
-
ORD
1 stop12h 53m
Frontier
Deal found 6/15$234
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
dt. 8/259:48 pm
ORD
-
ONT
1 stop14h 17m
Frontier
dt. 9/110:50 am
ONT
-
ORD
1 stop8h 03m
Frontier
Deal found 6/15$235
This United Airlines deal was found by Cheapflights users on 6/14. 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.
dc. 9/235:30 pm
ORD
-
ONT
Nonstop4h 27m
United Airlines
dt. 9/297:00 am
ONT
-
ORD
Nonstop4h 10m
United Airlines
Deal found 6/14$239
This Frontier deal was found by Cheapflights users on 6/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dc. 7/227:15 am
ORD
-
ONT
1 stop9h 59m
Frontier
dt. 7/289:32 am
ONT
-
ORD
1 stop13h 17m
Frontier
Deal found 6/10$240
This Booking.com deal was found by Cheapflights users on 6/11. 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.
dl. 7/139:57 pm
ORD
-
ONT
1 stop14h 07m
Frontier
dj. 7/1611:52 am
ONT
-
ORD
1 stop15h 45m
Frontier
Deal found 6/11$242
This Frontier deal was found by Cheapflights users on 6/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dj. 8/69:34 pm
ORD
-
ONT
1 stop13h 07m
Frontier
dc. 8/196:00 am
ONT
-
ORD
1 stop12h 53m
Frontier
Deal found 6/10$244

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 juny 15, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$171
(Kiwi.com)

One-way from

$100
(Trip.com)

Popular in

March

Cheapest in

August

Average price

$480
Provider with most accurate pricing for Milwaukee-Mitchell-Los Angeles Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for Milwaukee-Mitchell-Los Angeles 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. 4% potential increase in price ($20 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 June 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 juny 15, 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

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

dc. 8/26

8:20 pm-11:34 pm

1 stop5h 14m

Ontario

dt. 9/1

5:05 pm-12:49 am

1 stop5h 44m

$299

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

ds. 8/29

7:48 am-12:16 pm

1 stop6h 28m

Ontario

ds. 9/5

1:06 pm-9:30 pm

1 stop6h 24m

$317

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

dt. 8/25

8:01 am-12:16 pm

1 stop6h 15m

Ontario

dl. 8/31

5:05 pm-12:49 am

1 stop5h 44m

$331

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

dc. 9/9

5:30 pm-7:57 pm

Nonstop4h 27m

Ontario

dc. 9/16

1:18 pm-11:59 pm

1 stop8h 41m

$342

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

dt. 8/18

2:35 pm-8:01 pm

1 stop7h 26m

Ontario

dt. 8/25

7:00 am-1:10 pm

Nonstop4h 10m

$349

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

dj. 11/26

5:29 am-11:27 am

1 stop7h 58m

Ontario

dc. 12/2

12:00 pm-9:58 pm

1 stop7h 58m

$349

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

ds. 11/7

5:45 am-11:27 am

1 stop7h 42m

Ontario

dc. 11/18

12:00 pm-10:34 pm

1 stop8h 34m

$362

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

dc. 7/1

6:35 am-12:10 pm

1 stop7h 35m

Ontario

dc. 8/5

1:06 pm-9:41 pm

1 stop6h 35m

$382

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

dv. 8/21

8:20 pm-11:34 pm

1 stop5h 14m

Ontario

dl. 8/24

5:05 pm-12:49 am

1 stop5h 44m

$394

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

dt. 6/30

6:35 am-12:10 pm

1 stop7h 35m

Ontario

ds. 7/4

11:50 am-12:06 am

1 stop10h 16m

$395

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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 $199). 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 $342, Delta can have you in Ontario from Wisconsin in 4h 27m. 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 $199). 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 3 airlines flying from Wisconsin to Ontario

Discover the top 3 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 juny 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$288Average$442FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$316Average$467FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$333Average$473FlexibilityNo cancel feeOn-time71%

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