What is the cheapest airline that flies from Ontario to Wisconsin?

Frontier, Delta, and United Airlines are the most popular carriers operating from Ontario to Wisconsin

What airlines fly to Wisconsin?

American Airlines, United Airlines and Southwest are the top three most popular airlines that fly to Wisconsin from Ontario according to our data. American Airlines is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Wisconsin. Keep in mind that there are 7 different airlines that fly to Wisconsin on a routine basis, so you have a few additional options to choose from.

How many flights depart from Ontario to Wisconsin on average per week?

6 flights are operational weekly from Ontario to Wisconsin as of April 2026. The most popular departure day for this route is Mon, with 17% of flights per week taking off on this day.

When did momondo last update prices for flights from Ontario Airport to Wisconsin?

Prices for flights from Ontario Airport to Wisconsin were last updated today.

How many operators does momondo search for flights from Ontario Airport to Wisconsin?

As of April 2026, there are 6 operators available to choose from for flights from Ontario Airport to Wisconsin.

How old do you have to be to fly from Ontario Airport to Wisconsin?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Wisconsin.

What documentation or ID do you need to fly to Wisconsin?

The travel and health documents required for your trip to Wisconsin can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Wisconsin. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$72 Cheap Flights from Ontario to Wisconsin in 2026

1 adult

0 bags

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Find the cheapest flights from Ontario to Wisconsin

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 am - 9:19 am

ONT

MSP

25h 19m

1 stop

9:39 pm - 10:05 am

MSP

ONT

14h 26m

1 stop

$160Frontier

Sat, May 16 - Sat, May 23

10:50 am - 9:19 am

ONT

MSP

20h 29m

1 stop

9:39 pm - 10:05 am

MSP

ONT

14h 26m

1 stop

$167Frontier

Wed, May 6 - Tue, May 12

1:18 pm - 9:05 pm

ONT

MSN

5h 47m

1 stop

3:00 pm - 8:52 pm

MSN

ONT

7h 52m

1 stop

$291United Airlines

Tue, Sep 1 - Tue, Sep 22

1:18 pm - 9:05 pm

ONT

MSN

5h 47m

1 stop

10:49 am - 8:52 pm

MSN

ONT

12h 03m

2 stops

$296United Airlines

Tue, Sep 1 - Tue, Sep 22

12:41 pm - 11:07 pm

ONT

MSN

8h 26m

1 stop

2:03 pm - 10:02 pm

MSN

ONT

9h 59m

2 stops

$316American Airlines

Sat, May 23 - Sat, May 30

1:29 pm - 9:33 pm

ONT

MKE

6h 04m

1 stop

5:23 am - 10:57 am

MKE

ONT

7h 34m

1 stop

$356Delta

Tue, May 12 - Wed, May 13

3:34 pm - 3:10 pm

ONT

ATW

21h 36m

1 stop

7:30 am - 3:09 pm

ATW

ONT

33h 39m

2 stops

$356Multiple Airlines

Tue, Jul 14 - Wed, Jul 22

6:15 am - 2:15 pm

ONT

MKE

6h 00m

1 stop

5:00 pm - 11:46 pm

MKE

ONT

8h 46m

1 stop

$361American Airlines

Wed, May 13 - Sat, May 16

10:00 pm - 11:13 am

ONT

GRB

11h 13m

2 stops

5:01 pm - 11:34 pm

GRB

ONT

8h 33m

2 stops

$362Delta

Sat, May 23 - Wed, May 27

3:34 pm - 4:44 pm

ONT

ATW

47h 10m

2 stops

2:24 pm - 7:53 pm

ATW

ONT

7h 29m

1 stop

$441Multiple Airlines

Thu, Jun 25 - Sat, Jul 11

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Delta flights from Ontario to Wisconsin

Our best Delta deals on Ontario to Wisconsin flight tickets

Delta

Jun 1

ONT10:00 pmOntario

13h 01m

2 stops

ORD1:01 pmChicago O'Hare Intl

Jun 9

ORD8:52 amChicago O'Hare Intl

11h 38m

2 stops

ONT6:30 pmOntario

$282

Delta

Jun 1

ONT12:07 pmOntario

9h 52m

1 stop

ORD11:59 pmChicago O'Hare Intl

Jun 9

ORD8:52 amChicago O'Hare Intl

11h 33m

2 stops

ONT6:25 pmOntario

$288

Delta

May 23

ONT7:05 amOntario

9h 36m

1 stop

ORD6:41 pmChicago O'Hare Intl

May 30

ORD1:44 pmChicago O'Hare Intl

11h 01m

2 stops

ONT10:45 pmOntario

$312

Alaska Airlines flights from Ontario to Wisconsin

Our best Alaska Airlines deals on Ontario to Wisconsin flight tickets

Alaska Airlines

May 27

ONT7:41 pmOntario

8h 39m

1 stop

ORD6:20 amChicago O'Hare Intl

Jun 2

ORD7:49 pmChicago O'Hare Intl

17h 23m

1 stop

ONT11:12 amOntario

$307

Alaska Airlines

May 20

ONT6:00 amOntario

7h 44m

1 stop

MKE3:44 pmMilwaukee-Mitchell

May 24

MKE4:40 pmMilwaukee-Mitchell

9h 18m

1 stop

ONT11:58 pmOntario

$406

Alaska Airlines

May 20

ONT6:00 amOntario

7h 44m

1 stop

MKE3:44 pmMilwaukee-Mitchell

May 27

MKE5:00 amMilwaukee-Mitchell

12h 09m

2 stops

ONT3:09 pmOntario

$464

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

Sat 5/16

6:00 am-9:19 am

1 stop25h 19m

Minneapolis St Paul

Sat 5/23

9:39 pm-10:05 am

1 stop14h 26m

$160

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

Wed 5/6

10:50 am-9:19 am

1 stop20h 29m

Minneapolis St Paul

Tue 5/12

9:39 pm-10:05 am

1 stop14h 26m

$167

OntarioMadison

ONT - MSN

ONTMSN

Ontario

Tue 9/1

1:18 pm-9:05 pm

1 stop5h 47m

Madison Truax Field

Tue 9/22

3:00 pm-8:52 pm

1 stop7h 52m

$291

OntarioMadison

ONT - MSN

ONTMSN

Ontario

Tue 9/1

1:18 pm-9:05 pm

1 stop5h 47m

Madison Truax Field

Tue 9/22

10:49 am-8:52 pm

2 stops12h 03m

$296

OntarioMadison

ONT - MSN

ONTMSN

Ontario

Sat 5/23

12:41 pm-11:07 pm

1 stop8h 26m

Madison Truax Field

Sat 5/30

2:03 pm-10:02 pm

2 stops9h 59m

$316

Quickest round-trip

OntarioMilwaukee

ONT - MKE

ONTMKE

Ontario

Tue 5/12

1:29 pm-9:33 pm

1 stop6h 04m

Milwaukee-Mitchell

Wed 5/13

5:23 am-10:57 am

1 stop7h 34m

$356

OntarioAppleton

ONT - ATW

ONTATW

Ontario

Tue 7/14

3:34 pm-3:10 pm

1 stop21h 36m

Appleton Intl

Wed 7/22

7:30 am-3:09 pm

2 stops33h 39m

$356

OntarioMilwaukee

ONT - MKE

ONTMKE

Ontario

Wed 5/13

6:15 am-2:15 pm

1 stop6h 00m

Milwaukee-Mitchell

Sat 5/16

5:00 pm-11:46 pm

1 stop8h 46m

$361

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Sat 5/23

10:00 pm-11:13 am

2 stops11h 13m

Green Bay Austin-Straubel

Wed 5/27

5:01 pm-11:34 pm

2 stops8h 33m

$362

OntarioAppleton

ONT - ATW

ONTATW

Ontario

Thu 6/25

3:34 pm-4:44 pm

2 stops47h 10m

Appleton Intl

Sat 7/11

2:24 pm-7:53 pm

1 stop7h 29m

$441

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ontario to Wisconsin

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Wisconsin?

If you aren’t able to travel during the month of September, then book flights to Wisconsin from Ontario during May instead. Flights to Wisconsin in May, while not as cheap as those in September, still average around $391.

Can stopping save me money on Ontario to Wisconsin flights?

You could potentially save up to 16% on your flight if you consider stops on a Ontario to Wisconsin flight.

Cheap Ontario to Wisconsin flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Wisconsin

Fastest flight time	4h 03m
Direct flights	Every day
Airports in Wisconsin	80 airports

The fastest flight from Ontario to Wisconsin takes 4h 03m

Direct flights go from Ontario to Wisconsin every day.

There are 80 airports in Wisconsin. From Ontario there are direct flights to Chicago O'Hare Intl (ORD).

Search flight deals

Frequently asked questions about flying from Ontario to Wisconsin

When did momondo last update prices for flights from Ontario Airport to Wisconsin?
Prices for flights from Ontario Airport to Wisconsin were last updated today.
How many operators does momondo search for flights from Ontario Airport to Wisconsin?
As of April 2026, there are 6 operators available to choose from for flights from Ontario Airport to Wisconsin.
How old do you have to be to fly from Ontario Airport to Wisconsin?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Wisconsin.
What documentation or ID do you need to fly to Wisconsin?
The travel and health documents required for your trip to Wisconsin can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Wisconsin. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Ontario to Wisconsin

Compare and see reviews for airlines that fly from Ontario to Wisconsin with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $253	Free Cancellation	Rating 7.9 8,459 reviews	Search Delta flights
American Airlines	PriceFrom $276	Free Cancellation	Rating 7.1 11,673 reviews	Search American Airlines flights
United Airlines	PriceFrom $309	Free Cancellation	Rating 7.4 9,657 reviews	Search United Airlines flights
Southwest	PriceFrom $326	Free Cancellation	Rating 8.0 4,327 reviews	Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Wisconsin?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Wisconsin from Ontario.

Can I find flights from Ontario to Wisconsin with flexible booking policies on momondo?

Flights from Ontario to Wisconsin with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Ontario to Wisconsin?

Once all potential Ontario to Wisconsin flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Ontario to Wisconsin right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Ontario to Wisconsin flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.