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Ontario

$84+ 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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — ONT
Jun 24 — Jul 11
Wed 6/24
Wed 7/1
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 May 25, 2026.

This Kiwi.com deal was found by Cheapflights users on 5/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2210:40 pm
ORD
-
ONT
1 stop17h 17m
Frontier
Tue 9/296:00 am
ONT
-
ORD
1 stop13h 35m
Frontier
Deal found 5/20$197
This Kiwi.com deal was found by Cheapflights users on 5/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/710:58 am
MSP
-
ONT
1 stop14h 57m
Frontier
Wed 10/2111:38 am
ONT
-
MSP
1 stop7h 57m
Frontier
Deal found 5/20$218
This United Airlines deal was found by Cheapflights users on 5/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/225:30 pm
ORD
-
ONT
Nonstop4h 27m
United Airlines
Tue 9/297:00 am
ONT
-
ORD
Nonstop4h 03m
United Airlines
Deal found 5/20$219
This Frontier deal was found by Cheapflights users on 5/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/297:15 am
ORD
-
ONT
1 stop9h 52m
Frontier
Wed 8/53:40 pm
ONT
-
ORD
1 stop11h 48m
Frontier
Deal found 5/20$220
This American Airlines deal was found by Cheapflights users on 5/22. 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 7/87:25 am
ORD
-
ONT
1 stop6h 38m
American Airlines
Wed 7/151:10 pm
ONT
-
ORD
1 stop8h 20m
American Airlines
Deal found 5/22$221
This Kiwi.com deal was found by Cheapflights users on 5/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/308:20 am
MSP
-
ONT
1 stop13h 31m
Multiple Airlines
Tue 7/286:00 am
ONT
-
MSP
1 stop28h 21m
Multiple Airlines
Deal found 5/20$224
This CheapOair deal was found by Cheapflights users on 5/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/109:48 pm
ORD
-
ONT
1 stop28h 01m
Frontier
Tue 6/163:34 pm
ONT
-
ORD
1 stop11h 33m
Frontier
Deal found 5/20$235
This Kiwi.com deal was found by Cheapflights users on 5/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2810:15 pm
MSP
-
ONT
1 stop13h 50m
Frontier
Tue 9/16:00 am
ONT
-
MSP
1 stop25h 23m
Frontier
Deal found 5/20$237
This United Airlines deal was found by Cheapflights users on 5/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/86:00 am
ORD
-
ONT
1 stop8h 47m
United Airlines
Tue 7/141:18 pm
ONT
-
ORD
1 stop7h 31m
United Airlines
Deal found 5/20$239
This Frontier deal was found by Cheapflights users on 5/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:50 am
ORD
-
ONT
1 stop11h 20m
Frontier
Mon 9/142:58 pm
ONT
-
ORD
1 stop12h 44m
Frontier
Deal found 5/20$240
This United Airlines deal was found by Cheapflights users on 5/21. 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.
Wed 7/158:18 pm
ORD
-
ONT
Nonstop4h 33m
United Airlines
Wed 7/226:10 am
ONT
-
ORD
Nonstop4h 15m
United Airlines
Deal found 5/21$243
This Delta deal was found by Cheapflights users on 5/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/87:45 am
ORD
-
ONT
1 stop6h 25m
Delta
Wed 7/156:20 am
ONT
-
ORD
2 stops13h 28m
Delta
Deal found 5/20$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 May 25, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$197
(Kiwi.com)

One-way from

$84
(Trip.com)

Popular in

March

Cheapest in

July

Average price

$424
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. 7% potential increase in price ($34 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 25, 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

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Tue 7/7

7:45 am-5:21 pm

2 stops11h 36m

Ontario

Tue 7/14

6:20 am-4:43 pm

1 stop8h 23m

$304

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Sat 6/20

10:15 pm-11:49 pm

1 stop27h 34m

Ontario

Mon 6/22

6:00 am-9:23 am

1 stop25h 23m

$318

Green BayOntario

GRB - ONT

GRBONT

Green Bay Austin-Straubel

Sat 10/31

5:30 am-11:27 am

1 stop7h 57m

Ontario

Tue 11/17

12:00 pm-9:57 pm

1 stop7h 57m

$335

Green BayOntario

GRB - ONT

GRBONT

Green Bay Austin-Straubel

Wed 10/28

5:30 am-11:27 am

1 stop7h 57m

Ontario

Fri 11/13

12:00 pm-9:57 pm

1 stop7h 57m

$342

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Wed 7/8

7:40 pm-11:48 pm

1 stop6h 08m

Ontario

Mon 7/13

10:00 pm-10:10 am

1 stop10h 10m

$348

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Sun 8/30

5:31 am-10:42 am

1 stop7h 11m

Ontario

Fri 9/11

12:00 pm-9:57 pm

1 stop7h 57m

$349

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Sun 8/30

6:00 am-12:05 pm

2 stops8h 05m

Ontario

Wed 9/9

12:00 pm-9:57 pm

1 stop7h 57m

$354

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Sun 8/30

6:00 am-12:05 pm

2 stops8h 05m

Ontario

Mon 9/14

12:00 pm-9:57 pm

1 stop7h 57m

$354

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Mon 11/9

1:26 pm-10:43 pm

2 stops11h 17m

Ontario

Sun 11/15

10:59 pm-10:29 am

2 stops9h 30m

$359

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Tue 8/4

2:12 pm-11:34 pm

2 stops11h 22m

Ontario

Wed 8/12

5:05 pm-8:44 am

2 stops13h 39m

$369

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/22

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 $395, Delta can have you in Ontario from Wisconsin in 11h 31m. The distance between Wisconsin and Ontario is about 1491 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 $120. 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, 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 May 25, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$288Average$443FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$288Average$446FlexibilityNo cancel feeOn-time71%
DeltaCheapest$300Average$407FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$316Average$466FlexibilityNo cancel feeOn-time63%

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