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

Frontier, Alaska Airlines, and Delta 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 38% 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.

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 February 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.

$57 Cheap Flights from Ontario to Wisconsin in 2026

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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.

12:59 am - 11:58 pm

ONT

MSP

20h 59m

1 stop

8:15 am - 11:55 pm

MSP

ONT

17h 40m

1 stop

$158Frontier

Mon, Apr 13 - Tue, Apr 21

12:59 am - 11:58 pm

ONT

MSP

20h 59m

1 stop

8:15 am - 6:49 pm

MSP

ONT

12h 34m

2 stops

$186Frontier

Mon, Apr 13 - Tue, Apr 21

7:44 pm - 5:50 am

ONT

ORD

8h 06m

1 stop

4:21 pm - 7:31 am

ORD

ONT

17h 10m

2 stops

$225Multiple Airlines

Wed, Apr 29 - Wed, May 6

12:59 am - 12:52 am

ONT

ORD

21h 53m

2 stops

8:52 pm - 10:44 am

ORD

ONT

15h 52m

1 stop

$226Multiple Airlines

Wed, Apr 22 - Mon, Apr 27

11:59 pm - 11:05 am

ONT

MSN

9h 06m

1 stop

7:10 am - 1:18 pm

MSN

ONT

8h 08m

1 stop

$309American Airlines

Thu, Apr 23 - Sat, Apr 25

7:00 am - 4:50 pm

ONT

GRB

7h 50m

1 stop

5:26 pm - 10:46 pm

GRB

ONT

7h 20m

1 stop

$309United Airlines

Sun, May 17 - Wed, May 27

7:59 pm - 9:11 am

ONT

MSN

11h 12m

2 stops

5:45 pm - 10:19 pm

MSN

ONT

6h 34m

1 stop

$314American Airlines

Wed, Mar 25 - Wed, Apr 1

7:00 am - 4:50 pm

ONT

GRB

7h 50m

1 stop

8:00 am - 5:28 pm

GRB

ONT

11h 28m

2 stops

$314United Airlines

Sun, May 17 - Wed, May 27

5:55 pm - 10:09 am

ONT

MSN

14h 14m

2 stops

6:00 am - 12:14 pm

MSN

ONT

8h 14m

2 stops

$319Delta

Fri, May 1 - Tue, May 5

5:50 pm - 8:49 am

ONT

MKE

12h 59m

2 stops

6:55 am - 12:19 pm

MKE

ONT

7h 24m

1 stop

$366Delta

Mon, May 11 - Tue, May 26

Frontier flights from Ontario to Wisconsin

Our best Frontier deals on Ontario to Wisconsin flight tickets

Frontier

Apr 13

ONT12:59 amOntario

20h 59m

1 stop

MSP11:58 pmMinneapolis St Paul

Apr 21

MSP8:15 amMinneapolis St Paul

17h 40m

1 stop

ONT11:55 pmOntario

$158

Frontier

Apr 13

ONT12:59 amOntario

20h 59m

1 stop

MSP11:58 pmMinneapolis St Paul

Apr 21

MSP8:15 amMinneapolis St Paul

12h 34m

2 stops

ONT6:49 pmOntario

$186

Frontier

Apr 29

ONT12:59 amOntario

8h 03m

1 stop

MSP11:02 amMinneapolis St Paul

May 8

MSP1:50 pmMinneapolis St Paul

12h 05m

1 stop

ONT11:55 pmOntario

$190

Delta flights from Ontario to Wisconsin

Our best Delta deals on Ontario to Wisconsin flight tickets

Delta

Apr 8

ONT1:20 pmOntario

6h 14m

1 stop

ORD9:34 pmChicago O'Hare Intl

Apr 14

ORD2:09 pmChicago O'Hare Intl

10h 28m

2 stops

ONT10:37 pmOntario

$258

Delta

Mar 11

ONT11:59 amOntario

9h 52m

1 stop

ORD11:51 pmChicago O'Hare Intl

Mar 18

ORD7:20 amChicago O'Hare Intl

7h 03m

1 stop

ONT12:23 pmOntario

$316

Delta

May 1

ONT5:55 pmOntario

14h 14m

2 stops

MSN10:09 amMadison Truax Field

May 5

MSN6:00 amMadison Truax Field

8h 14m

2 stops

ONT12:14 pmOntario

$319

Fly from

Fly to

Route

Depart

Return

Price

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

Mon 4/13

12:59 am-11:58 pm

1 stop20h 59m

Minneapolis St Paul

Tue 4/21

8:15 am-11:55 pm

1 stop17h 40m

$158

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

Mon 4/13

12:59 am-11:58 pm

1 stop20h 59m

Minneapolis St Paul

Tue 4/21

8:15 am-6:49 pm

2 stops12h 34m

$186

OntarioChicago

ONT - ORD

ONTORD

Ontario

Wed 4/29

7:44 pm-5:50 am

1 stop8h 06m

Chicago O'Hare Intl

Wed 5/6

4:21 pm-7:31 am

2 stops17h 10m

$225

OntarioChicago

ONT - ORD

ONTORD

Ontario

Wed 4/22

12:59 am-12:52 am

2 stops21h 53m

Chicago O'Hare Intl

Mon 4/27

8:52 pm-10:44 am

1 stop15h 52m

$226

OntarioMadison

ONT - MSN

ONTMSN

Ontario

Thu 4/23

11:59 pm-11:05 am

1 stop9h 06m

Madison Truax Field

Sat 4/25

7:10 am-1:18 pm

1 stop8h 08m

$309

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Sun 5/17

7:00 am-4:50 pm

1 stop7h 50m

Green Bay Austin-Straubel

Wed 5/27

5:26 pm-10:46 pm

1 stop7h 20m

$309

OntarioMadison

ONT - MSN

ONTMSN

Ontario

Wed 3/25

7:59 pm-9:11 am

2 stops11h 12m

Madison Truax Field

Wed 4/1

5:45 pm-10:19 pm

1 stop6h 34m

$314

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Sun 5/17

7:00 am-4:50 pm

1 stop7h 50m

Green Bay Austin-Straubel

Wed 5/27

8:00 am-5:28 pm

2 stops11h 28m

$314

OntarioMadison

ONT - MSN

ONTMSN

Ontario

Fri 5/1

5:55 pm-10:09 am

2 stops14h 14m

Madison Truax Field

Tue 5/5

6:00 am-12:14 pm

2 stops8h 14m

$319

OntarioMilwaukee

ONT - MKE

ONTMKE

Ontario

Mon 5/11

5:50 pm-8:49 am

2 stops12h 59m

Milwaukee-Mitchell

Tue 5/26

6:55 am-12:19 pm

1 stop7h 24m

$366

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

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 $375.

Can stopping save me money on Ontario to Wisconsin flights?

You could potentially save up to 51% 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

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 February 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 8,244 reviews	Search Delta flights
American Airlines	PriceFrom $276	Free Cancellation	Rating 7.1 11,370 reviews	Search American Airlines flights
United Airlines	PriceFrom $288	Free Cancellation	Rating 7.4 9,370 reviews	Search United Airlines flights
Southwest	PriceFrom $326	Free Cancellation	Rating 8.0 4,303 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.