What airlines fly to Ontario?

American Airlines, United Airlines and Delta are the top three most popular airlines that fly to Ontario from Wisconsin according to our data. American Airlines is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 7 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

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

Frontier is the most popular carrier operating from Wisconsin to Ontario

How long does it take to fly to Ontario?

Average flight duration from Wisconsin to Ontario depends on which airport you fly into and out of. Flying from Milwaukee to Los Angeles is 6h 21m on average, while flying from Wausau to Los Angeles is 6h 44m on average. Los Angeles is the most popular airport in Ontario.

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

As of November 2025, 7 flights take off from Wisconsin and land in Ontario each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.

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

Prices for flights from Wisconsin to Ontario Airport are refreshed on a daily basis.

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

The number of operators available for flights from Wisconsin to Ontario Airport is 6 as of November 2025.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Wisconsin to Ontario Airport.

What documentation or ID do you need to fly to Ontario Airport?

The travel and health documents required for your trip to Ontario Airport 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 Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$63 Cheap Flights from Wisconsin to Ontario in 2025/26

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Find the cheapest flights from Wisconsin to Los Angeles

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:45 am - 10:39 pmMSP-ONT

17h 54m1 stop

7:00 am - 12:02 amONT-MSP

15h 02m1 stop

$129Frontier

Find Deal

Tue, Feb 3 - Wed, Feb 11

9:21 am - 6:35 pmORD-ONT

11h 14m1 stop

3:20 pm - 12:12 amONT-ORD

6h 52m1 stop

$130Frontier

Find Deal

Thu, Dec 4 - Mon, Dec 15

4:49 pm - 3:22 pmORD-ONT

24h 33m1 stop

6:15 am - 8:04 amONT-ORD

23h 49m2 stops

$177Multiple Airlines

Find Deal

Sat, Dec 6 - Wed, Dec 10

9:14 pm - 4:33 pmORD-ONT

21h 19m1 stop

6:45 am - 5:38 pmONT-ORD

32h 53m2 stops

$194Multiple Airlines

Find Deal

Sat, Dec 13 - Sun, Jan 4

3:27 pm - 10:51 pmMSN-ONT

9h 24m1 stop

10:40 pm - 10:14 amONT-MSN

9h 34m1 stop

$289American Airlines

Find Deal

Sat, Feb 14 - Sat, Feb 21

11:22 am - 7:00 pmMSN-ONT

9h 38m2 stops

6:10 am - 5:02 pmONT-MSN

8h 52m1 stop

$294American Airlines

Find Deal

Sat, Feb 14 - Sat, Feb 21

8:20 am - 12:47 pmATW-ONT

6h 27m1 stop

6:00 am - 7:19 pmONT-ATW

11h 19m2 stops

$294United Airlines

Find Deal

Sat, Jan 24 - Sat, Jan 31

12:35 pm - 9:58 pmATW-ONT

11h 23m2 stops

6:00 am - 7:19 pmONT-ATW

11h 19m2 stops

$299United Airlines

Find Deal

Sat, Jan 24 - Sat, Jan 31

1:12 pm - 10:47 pmMKE-ONT

11h 35m2 stops

5:49 pm - 8:45 amONT-MKE

12h 56m2 stops

$314Delta

Find Deal

Thu, Dec 4 - Mon, Dec 8

6:00 am - 5:07 pmMKE-ONT

13h 07m2 stops

7:30 am - 9:36 pmONT-MKE

12h 06m2 stops

$320Delta

Find Deal

Sat, Dec 13 - Sat, Jan 10

Frontier flights from Wisconsin to Ontario

Our best Frontier deals on Wisconsin to Ontario flight tickets

Frontier

Feb 3

MSP6:45 amMinneapolis St Paul

17h 54m

1 stop

ONT10:39 pmOntario

Feb 11

ONT7:00 amOntario

15h 02m

1 stop

MSP12:02 amMinneapolis St Paul

$129

Find similar

Frontier

Nov 18

MSP8:51 amMinneapolis St Paul

14h 36m

1 stop

ONT9:27 pmOntario

Nov 19

ONT12:58 amOntario

6h 09m

1 stop

MSP9:07 amMinneapolis St Paul

$130

Find similar

Frontier

Nov 19

MSP8:51 amMinneapolis St Paul

14h 36m

1 stop

ONT9:27 pmOntario

Nov 19

ONT12:58 amOntario

6h 09m

1 stop

MSP9:07 amMinneapolis St Paul

$131

Find similar

United Airlines flights from Wisconsin to Ontario

Our best United Airlines deals on Wisconsin to Ontario flight tickets

United Airlines

Jan 24

ATW8:20 amAppleton Intl

6h 27m

1 stop

ONT12:47 pmOntario

Jan 31

ONT6:00 amOntario

11h 19m

2 stops

ATW7:19 pmAppleton Intl

$294

Find similar

United Airlines

Jan 24

ATW12:35 pmAppleton Intl

11h 23m

2 stops

ONT9:58 pmOntario

Jan 31

ONT6:00 amOntario

11h 19m

2 stops

ATW7:19 pmAppleton Intl

$299

Find similar

United Airlines

Jan 25

ATW12:35 pmAppleton Intl

11h 23m

2 stops

ONT9:58 pmOntario

Feb 1

ONT1:24 pmOntario

5h 26m

1 stop

ATW8:50 pmAppleton Intl

$318

Find similar

Fly from

Fly to

Route

Depart

Return

Price

MinneapolisOntario

MSP - ONT

MSPONT

Minneapolis St Paul

Tue 2/3

6:45 am-10:39 pm

1 stop17h 54m

Ontario

Wed 2/11

7:00 am-12:02 am

1 stop15h 02m

$129

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Thu 12/4

9:21 am-6:35 pm

1 stop11h 14m

Ontario

Mon 12/15

3:20 pm-12:12 am

1 stop6h 52m

$130

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Sat 12/6

4:49 pm-3:22 pm

1 stop24h 33m

Ontario

Wed 12/10

6:15 am-8:04 am

2 stops23h 49m

$177

ChicagoOntario

ORD - ONT

ORDONT

Chicago O'Hare Intl

Sat 12/13

9:14 pm-4:33 pm

1 stop21h 19m

Ontario

Sun 1/4

6:45 am-5:38 pm

2 stops32h 53m

$194

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Sat 2/14

3:27 pm-10:51 pm

1 stop9h 24m

Ontario

Sat 2/21

10:40 pm-10:14 am

1 stop9h 34m

$289

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Sat 2/14

11:22 am-7:00 pm

2 stops9h 38m

Ontario

Sat 2/21

6:10 am-5:02 pm

1 stop8h 52m

$294

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Sat 1/24

8:20 am-12:47 pm

1 stop6h 27m

Ontario

Sat 1/31

6:00 am-7:19 pm

2 stops11h 19m

$294

AppletonOntario

ATW - ONT

ATWONT

Appleton Intl

Sat 1/24

12:35 pm-9:58 pm

2 stops11h 23m

Ontario

Sat 1/31

6:00 am-7:19 pm

2 stops11h 19m

$299

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Thu 12/4

1:12 pm-10:47 pm

2 stops11h 35m

Ontario

Mon 12/8

5:49 pm-8:45 am

2 stops12h 56m

$314

MilwaukeeOntario

MKE - ONT

MKEONT

Milwaukee-Mitchell

Sat 12/13

6:00 am-5:07 pm

2 stops13h 07m

Ontario

Sat 1/10

7:30 am-9:36 pm

2 stops12h 06m

$320

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 Wisconsin to Ontario

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 Ontario?

In general, September is the cheapest month to fly from Wisconsin to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $364. If you aren’t able to travel during the month of September, then book flights to Ontario from Wisconsin during August instead. Flights to Ontario in August, while not as cheap as those in September, still average around $376.

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Wednesday when prices can be found for as low as $366. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Wisconsin to Ontario for around $642.

What is the cheapest time of day to depart on your flight to Ontario?

In the evening is the cheapest time of day to fly from Wisconsin to Ontario when you can find flight prices for as low as $307. Flying to Ontario in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $434 on average. Flights to Ontario from Wisconsin at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

Can stopping save me money on Wisconsin to Ontario flights?

You could potentially save up to 34% on your flight if you consider stops on a Wisconsin to Ontario flight.

Cheap Wisconsin to Ontario flight deals and tips

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

Fastest flight time	4h 30m
Direct flights	Every day
Airports in Ontario	1 airport

The fastest flight from Wisconsin to Ontario takes 4h 30m

Direct flights go from Wisconsin to Ontario every day.

There is 1 airport near Ontario: Ontario (ONT)

Search flight deals

When did momondo last update prices for flights from Wisconsin to Ontario Airport?
Prices for flights from Wisconsin to Ontario Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Wisconsin to Ontario Airport?
The number of operators available for flights from Wisconsin to Ontario Airport is 6 as of November 2025.
How old do you have to be to fly from Wisconsin to Ontario Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Wisconsin to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The travel and health documents required for your trip to Ontario Airport 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 Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Wisconsin to Ontario

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

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $278	Free Cancellation	Rating 7.2 11,042 reviews	Search American Airlines flights
United Airlines	PriceFrom $288	Free Cancellation	Rating 7.4 9,002 reviews	Search United Airlines flights
Delta	PriceFrom $293	Free Cancellation	Rating 7.9 8,004 reviews	Search Delta flights
Southwest	PriceFrom $342	Free Cancellation	Rating 8.0 4,240 reviews	Search Southwest flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Wisconsin to Ontario. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. All flights to Ontario from Wisconsin on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Wisconsin to Ontario.

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

If you are simply researching potential flights to Ontario, momondo offers a useful price alert feature which will track prices for flights to Ontario from Wisconsin and alert you when they change.