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

United Airlines, Delta, and American 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 40% 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 June 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 June 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.

$89 Cheap Flights from Ontario to Wisconsin in 2026

Discover deals from 900+ travel sites with momondo.

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 - 9:27 pm

ONT

MSP

13h 27m

1 stop

10:15 pm - 11:50 pm

MSP

ONT

27h 35m

1 stop

$230Frontier

Wed, Jul 22 - Mon, Jul 27

9:49 pm - 12:12 pm

ONT

MSP

12h 23m

1 stop

1:07 pm - 8:54 pm

MSP

ONT

9h 47m

1 stop

$244Frontier

Sat, Sep 12 - Mon, Sep 14

1:06 pm - 9:30 pm

ONT

ORD

6h 24m

1 stop

7:48 am - 12:16 pm

ORD

ONT

6h 28m

1 stop

$296Delta

Thu, Aug 27 - Tue, Sep 1

1:06 pm - 9:30 pm

ONT

ORD

6h 24m

1 stop

8:28 am - 4:24 pm

ORD

ONT

9h 56m

2 stops

$301Delta

Thu, Aug 27 - Tue, Sep 1

7:00 am - 2:59 pm

ONT

MSN

5h 59m

1 stop

2:44 pm - 7:57 pm

MSN

ONT

7h 13m

1 stop

$340United Airlines

Fri, Sep 11 - Sat, Sep 19

1:05 pm - 12:17 am

ONT

MSN

9h 12m

2 stops

7:17 am - 11:47 am

MSN

ONT

6h 30m

1 stop

$345American Airlines

Fri, Sep 11 - Sat, Sep 19

12:37 pm - 10:57 pm

ONT

MSN

8h 20m

1 stop

5:51 pm - 10:37 pm

MSN

ONT

6h 46m

1 stop

$349American Airlines

Fri, Sep 11 - Fri, Sep 18

4:10 pm - 12:55 am

ONT

MKE

6h 45m

1 stop

6:25 am - 12:55 pm

MKE

ONT

8h 30m

2 stops

$374Southwest

Wed, Jul 15 - Wed, Jul 29

3:00 pm - 12:25 am

ONT

MKE

7h 25m

1 stop

5:00 am - 9:35 am

MKE

ONT

6h 35m

1 stop

$386Southwest

Sat, Jul 18 - Tue, Jul 21

7:00 am - 3:47 pm

ONT

MKE

6h 47m

1 stop

3:15 pm - 10:35 pm

MKE

ONT

9h 20m

1 stop

$389United Airlines

Sat, Aug 29 - Tue, Sep 1

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United Airlines flights from Ontario to Wisconsin

Our best United Airlines deals on Ontario to Wisconsin flight tickets

United Airlines

Aug 20

ONT7:00 amOntario

4h 10m

ORD1:10 pmChicago O'Hare Intl

Aug 24

ORD6:00 amChicago O'Hare Intl

8h 12m

1 stop

ONT12:12 pmOntario

$307

United Airlines

Jul 14

ONT6:10 amOntario

4h 15m

ORD12:25 pmChicago O'Hare Intl

Jul 21

ORD8:18 pmChicago O'Hare Intl

4h 33m

ONT10:51 pmOntario

$315

United Airlines

Sep 1

ONT7:00 amOntario

4h 10m

ORD1:10 pmChicago O'Hare Intl

Sep 1

ORD8:06 pmChicago O'Hare Intl

4h 29m

ONT10:35 pmOntario

$339

Frontier flights from Ontario to Wisconsin

Our best Frontier deals on Ontario to Wisconsin flight tickets

Frontier

Jul 22

ONT6:00 amOntario

13h 27m

1 stop

MSP9:27 pmMinneapolis St Paul

Jul 27

MSP10:15 pmMinneapolis St Paul

27h 35m

1 stop

ONT11:50 pmOntario

$230

Frontier

Sep 12

ONT9:49 pmOntario

12h 23m

1 stop

MSP12:12 pmMinneapolis St Paul

Sep 14

MSP1:07 pmMinneapolis St Paul

9h 47m

1 stop

ONT8:54 pmOntario

$244

Frontier

Aug 27

ONT11:43 amOntario

5h 51m

1 stop

MSP7:34 pmMinneapolis St Paul

Aug 31

MSP8:29 pmMinneapolis St Paul

25h 19m

1 stop

ONT7:48 pmOntario

$245

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

Wed 7/22

6:00 am-9:27 pm

1 stop13h 27m

Minneapolis St Paul

Mon 7/27

10:15 pm-11:50 pm

1 stop27h 35m

$230

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

Sat 9/12

9:49 pm-12:12 pm

1 stop12h 23m

Minneapolis St Paul

Mon 9/14

1:07 pm-8:54 pm

1 stop9h 47m

$244

Quickest round-trip

OntarioChicago

ONT - ORD

ONTORD

Ontario

Thu 8/27

1:06 pm-9:30 pm

1 stop6h 24m

Chicago O'Hare Intl

Tue 9/1

7:48 am-12:16 pm

1 stop6h 28m

$296

OntarioChicago

ONT - ORD

ONTORD

Ontario

Thu 8/27

1:06 pm-9:30 pm

1 stop6h 24m

Chicago O'Hare Intl

Tue 9/1

8:28 am-4:24 pm

2 stops9h 56m

$301

OntarioMadison

ONT - MSN

ONTMSN

Ontario

Fri 9/11

7:00 am-2:59 pm

1 stop5h 59m

Madison Truax Field

Sat 9/19

2:44 pm-7:57 pm

1 stop7h 13m

$340

OntarioMadison

ONT - MSN

ONTMSN

Ontario

Fri 9/11

1:05 pm-12:17 am

2 stops9h 12m

Madison Truax Field

Sat 9/19

7:17 am-11:47 am

1 stop6h 30m

$345

OntarioMadison

ONT - MSN

ONTMSN

Ontario

Fri 9/11

12:37 pm-10:57 pm

1 stop8h 20m

Madison Truax Field

Fri 9/18

5:51 pm-10:37 pm

1 stop6h 46m

$349

OntarioMilwaukee

ONT - MKE

ONTMKE

Ontario

Wed 7/15

4:10 pm-12:55 am

1 stop6h 45m

Milwaukee-Mitchell

Wed 7/29

6:25 am-12:55 pm

2 stops8h 30m

$374

OntarioMilwaukee

ONT - MKE

ONTMKE

Ontario

Sat 7/18

3:00 pm-12:25 am

1 stop7h 25m

Milwaukee-Mitchell

Tue 7/21

5:00 am-9:35 am

1 stop6h 35m

$386

OntarioMilwaukee

ONT - MKE

ONTMKE

Ontario

Sat 8/29

7:00 am-3:47 pm

1 stop6h 47m

Milwaukee-Mitchell

Tue 9/1

3:15 pm-10:35 pm

1 stop9h 20m

$389

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 July, then book flights to Wisconsin from Ontario during June instead. Flights to Wisconsin in June, while not as cheap as those in July, still average around $156.

Can stopping save me money on Ontario to Wisconsin flights?

You could potentially save up to 45% 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 June 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
American Airlines	PriceFrom $276	Free Cancellation	Rating 7.1 11,665 reviews	Search American Airlines flights
United Airlines	PriceFrom $309	Free Cancellation	Rating 7.4 9,842 reviews	Search United Airlines flights
Southwest	PriceFrom $350	Free Cancellation	Rating 7.9 4,237 reviews	Search Southwest flights
Delta	PriceFrom $356	Free Cancellation	Rating 7.9 8,404 reviews	Search Delta 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.