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

Frontier, Alaska Airlines, and American Airlines are the most popular carriers operating from Ontario to Wisconsin

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

11 flights are operational weekly from Ontario to Wisconsin as of December 2025. The most popular departure day for this route is Tue, with 18% of flights per week taking off on this day.

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.

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 December 2025, 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.

$61 Cheap Flights from Ontario to Wisconsin in 2025/26

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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.

8:10 am - 9:05 am

ONT

MSP

22h 55m1 stop

10:45 am - 9:34 am

MSP

ONT

24h 49m1 stop

$128Frontier

Wed, Feb 11 - Wed, Feb 25

7:15 am - 10:59 pm

ONT

MSP

13h 44m1 stop

10:45 am - 9:34 am

MSP

ONT

24h 49m1 stop

$129Frontier

Wed, Feb 4 - Wed, Feb 18

7:15 am - 10:38 pm

ONT

ORD

37h 23m2 stops

9:38 pm - 12:10 pm

ORD

ONT

16h 32m1 stop

$172Multiple Airlines

Tue, Jan 27 - Sun, Feb 1

8:21 am - 11:17 pm

ONT

ORD

12h 56m1 stop

8:16 pm - 7:26 am

ORD

ONT

37h 10m2 stops

$192Multiple Airlines

Sat, Feb 21 - Thu, Feb 26

11:59 pm - 10:43 am

ONT

MSN

8h 44m1 stop

3:09 pm - 10:48 pm

MSN

ONT

9h 39m1 stop

$309American Airlines

Thu, Feb 5 - Sat, Feb 7

6:22 am - 5:11 pm

ONT

MSN

8h 49m2 stops

3:09 pm - 10:48 pm

MSN

ONT

9h 39m1 stop

$314American Airlines

Thu, Feb 5 - Sat, Feb 7

12:00 pm - 9:58 pm

ONT

ATW

7h 58m1 stop

4:05 pm - 11:44 pm

ATW

ONT

9h 39m2 stops

$314Delta

Tue, May 19 - Wed, May 27

10:30 pm - 9:15 am

ONT

MKE

8h 45m1 stop

7:45 am - 12:16 pm

MKE

ONT

6h 31m1 stop

$319Delta

Thu, Jan 15 - Tue, Jan 20

6:54 pm - 10:30 am

ONT

GRB

13h 36m2 stops

5:18 pm - 10:26 pm

GRB

ONT

7h 08m1 stop

$362United Airlines

Wed, May 20 - Wed, May 27

6:54 pm - 10:30 am

ONT

GRB

13h 36m2 stops

10:45 am - 5:18 pm

GRB

ONT

8h 33m2 stops

$367United Airlines

Wed, May 20 - Wed, May 27

Delta flights from Ontario to Wisconsin

Our best Delta deals on Ontario to Wisconsin flight tickets

Delta

Jan 17

ONT1:11 pmOntario

5h 49m

1 stop

MSP9:00 pmMinneapolis St Paul

Jan 20

MSP6:58 pmMinneapolis St Paul

7h 00m

1 stop

ONT11:58 pmOntario

$257

Find similar

Delta

Jan 31

ONT7:30 amOntario

14h 23m

1 stop

ORD11:53 pmChicago O'Hare Intl

Feb 28

ORD7:40 amChicago O'Hare Intl

8h 14m

1 stop

ONT1:54 pmOntario

$285

Find similar

Delta

May 19

ONT12:00 pmOntario

7h 58m

1 stop

ATW9:58 pmAppleton Intl

May 27

ATW4:05 pmAppleton Intl

9h 39m

2 stops

ONT11:44 pmOntario

$314

Find similar

Frontier flights from Ontario to Wisconsin

Our best Frontier deals on Ontario to Wisconsin flight tickets

Frontier

Feb 11

ONT8:10 amOntario

22h 55m

1 stop

MSP9:05 amMinneapolis St Paul

Feb 25

MSP10:45 amMinneapolis St Paul

24h 49m

1 stop

ONT9:34 amOntario

$128

Find similar

Frontier

Feb 4

ONT7:15 amOntario

13h 44m

1 stop

MSP10:59 pmMinneapolis St Paul

Feb 18

MSP10:45 amMinneapolis St Paul

24h 49m

1 stop

ONT9:34 amOntario

$129

Find similar

Frontier

Feb 14

ONT8:21 amOntario

12h 56m

1 stop

ORD11:17 pmChicago O'Hare Intl

Feb 16

ORD7:19 pmChicago O'Hare Intl

19h 52m

1 stop

ONT1:11 pmOntario

$153

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

Wed 2/11

8:10 am-9:05 am

1 stop22h 55m

Minneapolis St Paul

Wed 2/25

10:45 am-9:34 am

1 stop24h 49m

$128

OntarioMinneapolis

ONT - MSP

ONTMSP

Ontario

Wed 2/4

7:15 am-10:59 pm

1 stop13h 44m

Minneapolis St Paul

Wed 2/18

10:45 am-9:34 am

1 stop24h 49m

$129

OntarioChicago

ONT - ORD

ONTORD

Ontario

Tue 1/27

7:15 am-10:38 pm

2 stops37h 23m

Chicago O'Hare Intl

Sun 2/1

9:38 pm-12:10 pm

1 stop16h 32m

$172

OntarioChicago

ONT - ORD

ONTORD

Ontario

Sat 2/21

8:21 am-11:17 pm

1 stop12h 56m

Chicago O'Hare Intl

Thu 2/26

8:16 pm-7:26 am

2 stops37h 10m

$192

OntarioMadison

ONT - MSN

ONTMSN

Ontario

Thu 2/5

11:59 pm-10:43 am

1 stop8h 44m

Madison Truax Field

Sat 2/7

3:09 pm-10:48 pm

1 stop9h 39m

$309

OntarioMadison

ONT - MSN

ONTMSN

Ontario

Thu 2/5

6:22 am-5:11 pm

2 stops8h 49m

Madison Truax Field

Sat 2/7

3:09 pm-10:48 pm

1 stop9h 39m

$314

OntarioAppleton

ONT - ATW

ONTATW

Ontario

Tue 5/19

12:00 pm-9:58 pm

1 stop7h 58m

Appleton Intl

Wed 5/27

4:05 pm-11:44 pm

2 stops9h 39m

$314

OntarioMilwaukee

ONT - MKE

ONTMKE

Ontario

Thu 1/15

10:30 pm-9:15 am

1 stop8h 45m

Milwaukee-Mitchell

Tue 1/20

7:45 am-12:16 pm

1 stop6h 31m

$319

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Wed 5/20

6:54 pm-10:30 am

2 stops13h 36m

Green Bay Austin-Straubel

Wed 5/27

5:18 pm-10:26 pm

1 stop7h 08m

$362

OntarioGreen Bay

ONT - GRB

ONTGRB

Ontario

Wed 5/20

6:54 pm-10:30 am

2 stops13h 36m

Green Bay Austin-Straubel

Wed 5/27

10:45 am-5:18 pm

2 stops8h 33m

$367

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 $375.

Can stopping save me money on Ontario to Wisconsin flights?

You could potentially save up to 68% 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	3h 51m
Direct flights	Every day
Airports in Wisconsin	80 airports

The fastest flight from Ontario to Wisconsin takes 3h 51m

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 December 2025, 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 8,018 reviews	Search Delta flights
American Airlines	PriceFrom $276	Free Cancellation	Rating 7.2 11,068 reviews	Search American Airlines flights
United Airlines	PriceFrom $288	Free Cancellation	Rating 7.4 9,116 reviews	Search United Airlines flights
Southwest	PriceFrom $330	Free Cancellation	Rating 8.0 4,258 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.

An easier way to manage your Wisconsin trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Popular cities in Wisconsin

Flights to New Yorkfrom $50

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Flights to Las Vegasfrom $49

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Flights to Bostonfrom $51

Flights to Atlantafrom $44

Flights to Dallasfrom $51

Flights to Seattlefrom $57

Cheap flights from Ontario to Wisconsin from $61

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Wisconsin departing on 1/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

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Find the cheapest flights from Ontario to Wisconsin

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Delta flights from Ontario to Wisconsin

Our best Delta deals on Ontario to Wisconsin flight tickets

Frontier flights from Ontario to Wisconsin

Our best Frontier deals on Ontario to Wisconsin flight tickets

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See travel insights to Wisconsin from

How to get the cheapest flight ticket from Ontario to Wisconsin

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 68% on your flight if you consider stops on a Ontario to Wisconsin flight.

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

Frontier, Alaska Airlines, and American Airlines are the most popular carriers operating from Ontario to Wisconsin

What airlines fly to Wisconsin?

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

11 flights are operational weekly from Ontario to Wisconsin as of December 2025. The most popular departure day for this route is Tue, with 18% of flights per week taking off on this day.

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

Direct flights

Airports in Wisconsin

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

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

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

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

Best airlines flying from Ontario to Wisconsin

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

Why use momondo?

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

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

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

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

An easier way to manage your Wisconsin trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Wisconsin

Popular cities in Wisconsin

Popular flights according to clicks in the last 7 days on momondo