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 Wausau to Los Angeles is 5h 55m on average, while flying from Milwaukee to Los Angeles is 6h on average. Los Angeles is the most popular airport in Ontario.

What airlines fly to Ontario?

American Airlines, United Airlines and Allegiant Air 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 39% 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?

Delta, Southwest, and Alaska Airlines are the most popular carriers operating from Wisconsin to Ontario

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 4 as of October 2026.

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.

$140 Cheap Flights from Wisconsin to Ontario in 2026/27

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Find the cheapest flights from Wisconsin to Los Angeles

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Cheap round-trip flights

Enter your travel dates to find the best prices.

5:45 am - 10:15 amMKE Milwaukee-Mitchell-ONT Ontario

6h 30m1 stop Denver Intl

1:50 pm - 9:15 pmONT Ontario-MKE Milwaukee-Mitchell

5h 25m1 stop Denver Intl

$279Southwest

Wed, Jan 6 - Mon, Jan 11

3:58 pm - 9:00 pmMKE Milwaukee-Mitchell-ONT Ontario

7h 02m1 stop Denver Intl

5:00 am - 4:46 pmONT Ontario-MKE Milwaukee-Mitchell

9h 46m2 stops Denver Intl Chicago O'Hare Intl

$284United Airlines

Wed, Jan 6 - Mon, Jan 11

12:45 pm - 9:00 pmMKE Milwaukee-Mitchell-ONT Ontario

10h 15m2 stops Chicago O'Hare Intl Denver Intl

5:00 am - 3:10 pmONT Ontario-MKE Milwaukee-Mitchell

8h 10m2 stops Denver Intl Chicago O'Hare Intl

$289United Airlines

Wed, Jan 6 - Mon, Jan 11

5:45 am - 10:15 amMKE Milwaukee-Mitchell-ONT Ontario

6h 30m1 stop Denver Intl

3:00 pm - 10:15 pmONT Ontario-MKE Milwaukee-Mitchell

5h 15m1 stop Phoenix Sky Harbor Intl

$308Southwest

Thu, Jan 7 - Sun, Jan 10

9:20 pm - 8:05 amMKE Milwaukee-Mitchell-ONT Ontario

12h 45m1 stop Phoenix Sky Harbor Intl

11:25 am - 10:20 pmONT Ontario-MKE Milwaukee-Mitchell

8h 55m1 stop Nashville Intl

$308Southwest

Sat, Dec 19 - Thu, Dec 31

7:05 am - 4:19 pmMKE Milwaukee-Mitchell-ONT Ontario

11h 14m2 stops Dallas/Fort Worth Phoenix Sky Harbor Intl

2:09 pm - 10:40 pmONT Ontario-MKE Milwaukee-Mitchell

6h 31m1 stop Dallas/Fort Worth

$341American Airlines

Tue, Nov 17 - Sat, Nov 21

7:06 am - 6:10 pmMKE Milwaukee-Mitchell-ONT Ontario

13h 04m2 stops Dallas/Fort Worth Phoenix Sky Harbor Intl

7:36 pm - 9:24 amONT Ontario-MKE Milwaukee-Mitchell

11h 48m2 stops Phoenix Sky Harbor Intl Chicago O'Hare Intl

$342American Airlines

Wed, Dec 16 - Wed, Dec 23

3:12 pm - 8:58 pmMKE Milwaukee-Mitchell-ONT Ontario

7h 46m1 stop Atlanta Hartsfield-Jackson

1:00 pm - 9:25 pmONT Ontario-MKE Milwaukee-Mitchell

6h 25m1 stop Salt Lake City

$357Delta

Tue, Dec 15 - Tue, Jan 5

7:30 am - 12:17 pmMKE Milwaukee-Mitchell-ONT Ontario

6h 47m1 stop Salt Lake City

1:15 pm - 9:55 pmONT Ontario-MKE Milwaukee-Mitchell

6h 40m1 stop Salt Lake City

$357Delta

Tue, Nov 17 - Sat, Nov 21

3:08 pm - 8:51 pmMSN Madison Truax Field-ONT Ontario

7h 43m1 stop Denver Intl

1:29 pm - 8:43 pmONT Ontario-MSN Madison Truax Field

5h 14m1 stop Denver Intl

$379United Airlines

Sat, Nov 14 - Tue, Nov 17

Cheap last minute flights

Enter your travel dates to find the best prices.

5:35 am - 11:06 amATW Appleton Intl-ONT Ontario

7h 31m1 stop Atlanta Hartsfield-Jackson

12:16 pm - 10:08 pmONT Ontario-ATW Appleton Intl

7h 52m1 stop Atlanta Hartsfield-Jackson

$453Delta

Sat, Oct 24 - Mon, Nov 2

5:35 am - 11:06 amATW Appleton Intl-ONT Ontario

7h 31m1 stop Atlanta Hartsfield-Jackson

12:16 pm - 10:08 pmONT Ontario-ATW Appleton Intl

7h 52m1 stop Atlanta Hartsfield-Jackson

$453Delta

Sat, Oct 24 - Sun, Nov 1

5:35 am - 11:06 amATW Appleton Intl-ONT Ontario

7h 31m1 stop Atlanta Hartsfield-Jackson

12:16 pm - 10:09 pmONT Ontario-ATW Appleton Intl

7h 53m1 stop Atlanta Hartsfield-Jackson

$453Delta

Sat, Oct 24 - Sat, Oct 31

4:36 pm - 10:51 pmMSN Madison Truax Field-ONT Ontario

8h 15m1 stop Chicago O'Hare Intl

6:59 am - 3:07 pmONT Ontario-MSN Madison Truax Field

6h 08m1 stop Chicago O'Hare Intl

$583United Airlines

Sat, Oct 24 - Sat, Oct 31

4:36 pm - 10:51 pmMSN Madison Truax Field-ONT Ontario

8h 15m1 stop Chicago O'Hare Intl

5:00 am - 1:24 pmONT Ontario-MSN Madison Truax Field

6h 24m1 stop Denver Intl

$583United Airlines

Sat, Oct 24 - Sun, Nov 1

4:36 pm - 10:51 pmMSN Madison Truax Field-ONT Ontario

8h 15m1 stop Chicago O'Hare Intl

5:00 am - 1:24 pmONT Ontario-MSN Madison Truax Field

6h 24m1 stop Denver Intl

$583United Airlines

Sat, Oct 24 - Mon, Nov 2

2:46 pm - 11:52 pmGRB Green Bay Austin-Straubel-ONT Ontario

11h 06m2 stops Chicago O'Hare Intl Dallas/Fort Worth

1:23 pm - 12:06 amONT Ontario-GRB Green Bay Austin-Straubel

8h 43m2 stops Phoenix Sky Harbor Intl Chicago O'Hare Intl

$652American Airlines

Sat, Oct 24 - Mon, Nov 2

2:46 pm - 11:52 pmGRB Green Bay Austin-Straubel-ONT Ontario

11h 06m2 stops Chicago O'Hare Intl Dallas/Fort Worth

7:49 pm - 9:28 amONT Ontario-GRB Green Bay Austin-Straubel

11h 39m2 stops Phoenix Sky Harbor Intl Chicago O'Hare Intl

$652American Airlines

Sat, Oct 24 - Sun, Nov 1

3:53 pm - 11:42 pmMKE Milwaukee-Mitchell-ONT Ontario

9h 49m1 stop Seattle/Tacoma Intl

6:02 am - 4:19 pmONT Ontario-MKE Milwaukee-Mitchell

8h 17m1 stop Seattle/Tacoma Intl

$861Alaska Airlines

Thu, Oct 22 - Sun, Oct 25

2:25 pm - 10:29 amMSN Madison Truax Field-ONT Ontario

22h 04m2 stops Phoenix Sky Harbor Intl Denver Intl

6:25 am - 1:36 pmONT Ontario-MSN Madison Truax Field

29h 11m3 stops Denver Intl Salt Lake City Phoenix Sky Harbor Intl

$937Multiple Airlines

Thu, Oct 22 - Sun, Nov 1

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United Airlines flights from Wisconsin to Ontario

Our best United Airlines deals on Wisconsin to Ontario flight tickets

United Airlines

Jan 6

MKE3:58 pmMilwaukee-Mitchell

7h 02m

1 stop

ONT9:00 pmOntario

Jan 11

ONT5:00 amOntario

9h 46m

2 stops

MKE4:46 pmMilwaukee-Mitchell

$284

United Airlines

Jan 6

MKE12:45 pmMilwaukee-Mitchell

10h 15m

2 stops

ONT9:00 pmOntario

Jan 11

ONT5:00 amOntario

8h 10m

2 stops

MKE3:10 pmMilwaukee-Mitchell

$289

United Airlines

Nov 14

MSN3:08 pmMadison Truax Field

7h 43m

1 stop

ONT8:51 pmOntario

Nov 17

ONT1:29 pmOntario

5h 14m

1 stop

MSN8:43 pmMadison Truax Field

$379

American Airlines flights from Wisconsin to Ontario

Our best American Airlines deals on Wisconsin to Ontario flight tickets

American Airlines

Nov 17

MKE7:05 amMilwaukee-Mitchell

11h 14m

2 stops

ONT4:19 pmOntario

Nov 21

ONT2:09 pmOntario

6h 31m

1 stop

MKE10:40 pmMilwaukee-Mitchell

$341

American Airlines

Dec 16

MKE7:06 amMilwaukee-Mitchell

13h 04m

2 stops

ONT6:10 pmOntario

Dec 23

ONT7:36 pmOntario

11h 48m

2 stops

MKE9:24 amMilwaukee-Mitchell

$342

American Airlines

Nov 17

MKE7:05 amMilwaukee-Mitchell

11h 14m

2 stops

ONT4:19 pmOntario

Nov 21

ONT9:20 amOntario

11h 20m

2 stops

MKE10:40 pmMilwaukee-Mitchell

$346

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MilwaukeeOntario

MKE Milwaukee-Mitchell - ONT Ontario

MKEONT

Milwaukee-Mitchell

Wed 1/6

5:45 am-10:15 am

1 stop6h 30m

Ontario

Mon 1/11

1:50 pm-9:15 pm

1 stop5h 25m

$279

MilwaukeeOntario

MKE Milwaukee-Mitchell - ONT Ontario

MKEONT

Milwaukee-Mitchell

Wed 1/6

3:58 pm-9:00 pm

1 stop7h 02m

Ontario

Mon 1/11

5:00 am-4:46 pm

2 stops9h 46m

$284

MilwaukeeOntario

MKE Milwaukee-Mitchell - ONT Ontario

MKEONT

Milwaukee-Mitchell

Wed 1/6

12:45 pm-9:00 pm

2 stops10h 15m

Ontario

Mon 1/11

5:00 am-3:10 pm

2 stops8h 10m

$289

Quickest round-trip

MilwaukeeOntario

MKE Milwaukee-Mitchell - ONT Ontario

MKEONT

Milwaukee-Mitchell

Thu 1/7

5:45 am-10:15 am

1 stop6h 30m

Ontario

Sun 1/10

3:00 pm-10:15 pm

1 stop5h 15m

$308

MilwaukeeOntario

MKE Milwaukee-Mitchell - ONT Ontario

MKEONT

Milwaukee-Mitchell

Sat 12/19

9:20 pm-8:05 am

1 stop12h 45m

Ontario

Thu 12/31

11:25 am-10:20 pm

1 stop8h 55m

$308

MilwaukeeOntario

MKE Milwaukee-Mitchell - ONT Ontario

MKEONT

Milwaukee-Mitchell

Tue 11/17

7:05 am-4:19 pm

2 stops11h 14m

Ontario

Sat 11/21

2:09 pm-10:40 pm

1 stop6h 31m

$341

MilwaukeeOntario

MKE Milwaukee-Mitchell - ONT Ontario

MKEONT

Milwaukee-Mitchell

Wed 12/16

7:06 am-6:10 pm

2 stops13h 04m

Ontario

Wed 12/23

7:36 pm-9:24 am

2 stops11h 48m

$342

MilwaukeeOntario

MKE Milwaukee-Mitchell - ONT Ontario

MKEONT

Milwaukee-Mitchell

Tue 12/15

3:12 pm-8:58 pm

1 stop7h 46m

Ontario

Tue 1/5

1:00 pm-9:25 pm

1 stop6h 25m

$357

MilwaukeeOntario

MKE Milwaukee-Mitchell - ONT Ontario

MKEONT

Milwaukee-Mitchell

Tue 11/17

7:30 am-12:17 pm

1 stop6h 47m

Ontario

Sat 11/21

1:15 pm-9:55 pm

1 stop6h 40m

$357

MadisonOntario

MSN Madison Truax Field - ONT Ontario

MSNONT

Madison Truax Field

Sat 11/14

3:08 pm-8:51 pm

1 stop7h 43m

Ontario

Tue 11/17

1:29 pm-8:43 pm

1 stop5h 14m

$379

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, January 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 $341. If you aren’t able to travel during the month of January, then book flights to Ontario from Wisconsin during November instead. Flights to Ontario in November, while not as cheap as those in January, still average around $403.

Can stopping save me money on Wisconsin to Ontario flights?

You could potentially save up to 16% 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

Best Price Found	$140
Fastest flight time	4h 26m
Direct flights	None

The best one-way flight to Ontario from Wisconsin in the past 72 hours is $140. The best round-trip flight deal from Wisconsin to Ontario found on momondo in the last 72 hours is $279.

The fastest flight from Wisconsin to Ontario takes 4h 26m

There are no direct flights from Wisconsin to Ontario. There are no popular flight routes from Wisconsin to Ontario.

Search flight deals

Frequently asked questions about flying from Wisconsin to Ontario

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 4 as of October 2026.
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
United Airlines	PriceFrom $288	Free Cancellation	Rating 7.3 10,387 reviews	Search United Airlines flights
American Airlines	PriceFrom $333	Free Cancellation	Rating 7.0 12,181 reviews	Search American Airlines flights
Southwest	PriceFrom $334	Free Cancellation	Rating 7.9 4,213 reviews	Search Southwest flights
Delta	PriceFrom $360	Free Cancellation	Rating 7.8 8,650 reviews	Search Delta 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.

An easier way to manage your Ontario trip

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Cheap flights from Wisconsin to Los Angeles from $140

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Wisconsin to Los Angeles departing on 11/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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United Airlines flights from Wisconsin to Ontario

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How to get the cheapest flight ticket from Wisconsin to Ontario

What is the cheapest month to fly to Ontario?

Can stopping save me money on Wisconsin to Ontario flights?

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

What airlines fly to Ontario?

How long does it take to fly to Ontario?

Cheap Wisconsin to Ontario flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Wisconsin to Ontario

Best airlines flying from Wisconsin to Ontario

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

Why use momondo?

An easier way to manage your Ontario 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 the United States

Airports servicing California

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Airlines are sorted and displayed according to clicks in the past 7 days on momondo

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List of cabin classes available on flights landing in Los Angeles. Availability may vary depending on flight origin and airline.

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