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 37% 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?

14 flights are operational weekly from Ontario to Wisconsin as of August 2026. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.

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

United Airlines, Frontier, and Delta are the most popular carriers operating 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 August 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

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Find the cheapest flights from Ontario to Wisconsin

Round-trip

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Cheap round-trip flights

Enter your travel dates to find the best prices.

6:15 am - 1:38 pmONT Ontario-MSP Minneapolis St Paul

5h 23m1 stop Denver Intl

7:00 am - 10:30 amMSP Minneapolis St Paul-ONT Ontario

5h 30m1 stop Denver Intl

$142Frontier

Thu, Sep 24 - Mon, Sep 28

6:00 am - 1:06 pmONT Ontario-MSP Minneapolis St Paul

5h 06m1 stop Denver Intl

2:01 pm - 11:50 pmMSP Minneapolis St Paul-ONT Ontario

11h 49m1 stop Denver Intl

$178Frontier

Tue, Sep 1 - Sat, Sep 5

11:15 pm - 10:30 amONT Ontario-ORD Chicago O'Hare Intl

9h 15m2 stops Atlanta Hartsfield-Jackson Detroit Metropolitan Wayne County

5:27 am - 11:06 amORD Chicago O'Hare Intl-ONT Ontario

7h 39m1 stop Atlanta Hartsfield-Jackson

$262Delta

Thu, Oct 22 - Sun, Oct 25

6:01 pm - 7:41 amONT Ontario-ORD Chicago O'Hare Intl

11h 40m2 stops Seattle/Tacoma Intl Detroit Metropolitan Wayne County

5:27 am - 11:06 amORD Chicago O'Hare Intl-ONT Ontario

7h 39m1 stop Atlanta Hartsfield-Jackson

$262Delta

Tue, Oct 13 - Sun, Oct 18

8:54 pm - 5:06 amONT Ontario-MSP Minneapolis St Paul

6h 12m1 stop Las Vegas Harry Reid Intl

9:53 am - 10:21 amMSP Minneapolis St Paul-ONT Ontario

26h 28m2 stops Denver Intl Las Vegas Harry Reid Intl

$264Multiple Airlines

Fri, Oct 16 - Tue, Oct 20

7:13 pm - 6:56 amONT Ontario-ORD Chicago O'Hare Intl

9h 43m1 stop San Francisco

8:33 pm - 10:59 pmORD Chicago O'Hare Intl-ONT Ontario

4h 26mnonstop

$265United Airlines

Sun, Sep 13 - Sat, Sep 19

7:00 am - 1:10 pmONT Ontario-ORD Chicago O'Hare Intl

4h 10mnonstop

5:55 am - 12:50 pmORD Chicago O'Hare Intl-ONT Ontario

8h 55m1 stop Denver Intl

$265United Airlines

Sun, Sep 20 - Wed, Sep 23

8:54 pm - 5:42 amONT Ontario-ORD Chicago O'Hare Intl

6h 48m1 stop Las Vegas Harry Reid Intl

9:00 am - 6:00 pmORD Chicago O'Hare Intl-ONT Ontario

11h 00m1 stop Seattle/Tacoma Intl

$265Multiple Airlines

Mon, Oct 19 - Thu, Oct 22

12:43 pm - 9:52 pmONT Ontario-MKE Milwaukee-Mitchell

7h 09m1 stop Dallas/Fort Worth

7:14 am - 1:30 pmMKE Milwaukee-Mitchell-ONT Ontario

8h 16m1 stop Dallas/Fort Worth

$267American Airlines

Tue, Oct 27 - Sat, Oct 31

12:37 pm - 9:48 pmONT Ontario-MKE Milwaukee-Mitchell

7h 11m1 stop Dallas/Fort Worth

5:43 pm - 10:37 pmMKE Milwaukee-Mitchell-ONT Ontario

6h 54m1 stop Dallas/Fort Worth

$267American Airlines

Tue, Sep 22 - Tue, Sep 29

Cheap last minute flights

Enter your travel dates to find the best prices.

3:40 pm - 7:02 pmONT Ontario-ORD Chicago O'Hare Intl

25h 22m1 stop Las Vegas Harry Reid Intl

9:10 pm - 8:38 amORD Chicago O'Hare Intl-ONT Ontario

13h 28m1 stop Dallas/Fort Worth

$265Frontier

Wed, Aug 19 - Thu, Aug 20

9:43 am - 8:30 pmONT Ontario-ORD Chicago O'Hare Intl

8h 47m2 stops Salt Lake City Detroit Metropolitan Wayne County

11:17 am - 8:24 pmORD Chicago O'Hare Intl-ONT Ontario

11h 07m2 stops Detroit Metropolitan Wayne County Atlanta Hartsfield-Jackson

$267Delta

Tue, Aug 18 - Wed, Sep 9

9:01 am - 8:26 pmONT Ontario-ORD Chicago O'Hare Intl

9h 25m1 stop San Francisco

8:06 pm - 10:35 pmORD Chicago O'Hare Intl-ONT Ontario

4h 29mnonstop

$267United Airlines

Wed, Aug 19 - Fri, Aug 21

12:59 pm - 10:00 pmONT Ontario-ORD Chicago O'Hare Intl

7h 01m1 stop Phoenix Sky Harbor Intl

5:00 am - 9:34 amORD Chicago O'Hare Intl-ONT Ontario

6h 34m1 stop Dallas/Fort Worth

$277American Airlines

Wed, Aug 19 - Thu, Aug 20

1:56 pm - 12:59 amONT Ontario-ORD Chicago O'Hare Intl

9h 03m1 stop San Francisco

8:40 am - 12:50 pmORD Chicago O'Hare Intl-ONT Ontario

6h 10m1 stop Denver Intl

$277United Airlines

Sun, Aug 16 - Sat, Aug 22

9:36 am - 12:33 amONT Ontario-ORD Chicago O'Hare Intl

12h 57m1 stop Houston George Bush Intcntl

2:41 pm - 11:50 pmORD Chicago O'Hare Intl-ONT Ontario

11h 09m1 stop Denver Intl

$282Frontier

Sat, Aug 15 - Wed, Aug 19

11:56 am - 11:29 pmONT Ontario-ORD Chicago O'Hare Intl

9h 33m1 stop Seattle/Tacoma Intl

1:59 pm - 11:34 pmORD Chicago O'Hare Intl-ONT Ontario

11h 35m2 stops Detroit Metropolitan Wayne County Salt Lake City

$282Delta

Wed, Aug 19 - Fri, Aug 21

2:27 pm - 11:30 pmONT Ontario-ORD Chicago O'Hare Intl

7h 03m1 stop Dallas/Fort Worth

5:00 am - 9:34 amORD Chicago O'Hare Intl-ONT Ontario

6h 34m1 stop Dallas/Fort Worth

$345American Airlines

Wed, Aug 19 - Mon, Aug 31

7:00 am - 5:00 amONT Ontario-ORD Chicago O'Hare Intl

20h 00m1 stop Portland

2:41 pm - 11:50 pmORD Chicago O'Hare Intl-ONT Ontario

11h 09m1 stop Denver Intl

$363Multiple Airlines

Sun, Aug 16 - Tue, Aug 18

3:40 pm - 7:02 pmONT Ontario-ORD Chicago O'Hare Intl

25h 22m1 stop Las Vegas Harry Reid Intl

6:00 am - 3:47 pmORD Chicago O'Hare Intl-ONT Ontario

11h 47m2 stops Seattle/Tacoma Intl Santa Rosa Sonoma County

$503Multiple Airlines

Wed, Aug 19 - Mon, Aug 31

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Delta flights from Ontario to Wisconsin

Our best Delta deals on Ontario to Wisconsin flight tickets

Delta

Oct 22

ONT11:15 pmOntario

9h 15m

2 stops

ORD10:30 amChicago O'Hare Intl

Oct 25

ORD5:27 amChicago O'Hare Intl

7h 39m

1 stop

ONT11:06 amOntario

$262

Delta

Aug 31

ONT6:01 pmOntario

12h 29m

2 stops

ORD8:30 amChicago O'Hare Intl

Sep 5

ORD10:50 amChicago O'Hare Intl

9h 40m

1 stop

ONT6:30 pmOntario

$263

Delta

Nov 12

ONT5:53 pmOntario

13h 12m

2 stops

ORD9:05 amChicago O'Hare Intl

Nov 14

ORD5:30 amChicago O'Hare Intl

13h 00m

2 stops

ONT4:30 pmOntario

$267

United Airlines flights from Ontario to Wisconsin

Our best United Airlines deals on Ontario to Wisconsin flight tickets

United Airlines

Sep 8

ONT1:18 pmOntario

8h 41m

1 stop

ORD11:59 pmChicago O'Hare Intl

Sep 18

ORD8:33 pmChicago O'Hare Intl

4h 26m

ONT10:59 pmOntario

$269

United Airlines

Sep 21

ONT1:56 pmOntario

9h 03m

1 stop

ORD12:59 amChicago O'Hare Intl

Sep 25

ORD8:20 pmChicago O'Hare Intl

4h 29m

ONT10:49 pmOntario

$270

United Airlines

Sep 16

ONT1:18 pmOntario

6h 42m

1 stop

ORD10:00 pmChicago O'Hare Intl

Sep 18

ORD8:33 pmChicago O'Hare Intl

4h 26m

ONT10:59 pmOntario

$271

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

OntarioMinneapolis

ONT Ontario - MSP Minneapolis St Paul

ONTMSP

Ontario

Thu 9/24

6:15 am-1:38 pm

1 stop5h 23m

Minneapolis St Paul

Mon 9/28

7:00 am-10:30 am

1 stop5h 30m

$142

OntarioMinneapolis

ONT Ontario - MSP Minneapolis St Paul

ONTMSP

Ontario

Tue 9/1

6:00 am-1:06 pm

1 stop5h 06m

Minneapolis St Paul

Sat 9/5

2:01 pm-11:50 pm

1 stop11h 49m

$178

OntarioChicago

ONT Ontario - ORD Chicago O'Hare Intl

ONTORD

Ontario

Thu 10/22

11:15 pm-10:30 am

2 stops9h 15m

Chicago O'Hare Intl

Sun 10/25

5:27 am-11:06 am

1 stop7h 39m

$262

OntarioChicago

ONT Ontario - ORD Chicago O'Hare Intl

ONTORD

Ontario

Tue 10/13

6:01 pm-7:41 am

2 stops11h 40m

Chicago O'Hare Intl

Sun 10/18

5:27 am-11:06 am

1 stop7h 39m

$262

OntarioMinneapolis

ONT Ontario - MSP Minneapolis St Paul

ONTMSP

Ontario

Fri 10/16

8:54 pm-5:06 am

1 stop6h 12m

Minneapolis St Paul

Tue 10/20

9:53 am-10:21 am

2 stops26h 28m

$264

OntarioChicago

ONT Ontario - ORD Chicago O'Hare Intl

ONTORD

Ontario

Sun 9/13

7:13 pm-6:56 am

1 stop9h 43m

Chicago O'Hare Intl

Sat 9/19

8:33 pm-10:59 pm

Nonstop4h 26m

$265

OntarioChicago

ONT Ontario - ORD Chicago O'Hare Intl

ONTORD

Ontario

Sun 9/20

7:00 am-1:10 pm

Nonstop4h 10m

Chicago O'Hare Intl

Wed 9/23

5:55 am-12:50 pm

1 stop8h 55m

$265

OntarioChicago

ONT Ontario - ORD Chicago O'Hare Intl

ONTORD

Ontario

Mon 10/19

8:54 pm-5:42 am

1 stop6h 48m

Chicago O'Hare Intl

Thu 10/22

9:00 am-6:00 pm

1 stop11h 00m

$265

OntarioMilwaukee

ONT Ontario - MKE Milwaukee-Mitchell

ONTMKE

Ontario

Tue 10/27

12:43 pm-9:52 pm

1 stop7h 09m

Milwaukee-Mitchell

Sat 10/31

7:14 am-1:30 pm

1 stop8h 16m

$267

OntarioMilwaukee

ONT Ontario - MKE Milwaukee-Mitchell

ONTMKE

Ontario

Tue 9/22

12:37 pm-9:48 pm

1 stop7h 11m

Milwaukee-Mitchell

Tue 9/29

5:43 pm-10:37 pm

1 stop6h 54m

$267

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 December, then book flights to Wisconsin from Ontario during September instead. Flights to Wisconsin in September, while not as cheap as those in December, still average around $420.

Can stopping save me money on Ontario to Wisconsin flights?

You could potentially save up to 63% 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 58m
Direct flights	Every day
Airports in Wisconsin	80 airports

The fastest flight from Ontario to Wisconsin takes 3h 58m

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 August 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 $230	Free Cancellation	Rating 7.8 8,502 reviews	Search Delta flights
American Airlines	PriceFrom $276	Free Cancellation	Rating 7.1 11,929 reviews	Search American Airlines flights
United Airlines	PriceFrom $288	Free Cancellation	Rating 7.4 10,108 reviews	Search United Airlines flights
Southwest	PriceFrom $337	Free Cancellation	Rating 8.0 4,218 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.