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$111+ Cheap flights from Madison to Ontario (MSN - ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/10. Fares are subject to change and may not be available on all flights or dates of travel.
MSN — ONT
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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Cheap flight deals from Madison to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Madison (MSN) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$222
(Frontier)

One-way from

$111
(Priceline)

Popular in

May

Cheapest in

March

Average price

$353
Provider with most accurate pricing for Madison Truax Field-Ontario flight deals.
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Provider most trusted by Cheapflights users for Madison Truax Field-Ontario flights.
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From Madison Truax Field to Ontario
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One-way flight from Madison Truax Field to Ontario
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Highest demand for flights based on searches. 15% potential increase in price ($78 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Madison to Ontario

Cheapest flights from Madison to Ontario
Explore the most affordable flight options available from Madison to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 28, 2025.

This Frontier deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/108:00 pmMSN - ONT
1 stop5h 50mFrontier
Mon 11/176:53 amONT - MSN
1 stop10h 22mFrontier
Deal found 10/27$222
This Frontier deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/138:00 pmMSN - ONT
1 stop5h 50mFrontier
Mon 11/176:53 amONT - MSN
1 stop10h 22mFrontier
Deal found 10/26$252
This Frontier deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/168:00 pmMSN - ONT
1 stop5h 50mFrontier
Fri 11/2112:58 amONT - MSN
1 stop11h 21mFrontier
Deal found 10/28$259
This Kiwi.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/243:00 pmMSN - ONT
1 stop10h 59mFrontier
Tue 12/306:45 amONT - MSN
1 stop6h 54mFrontier
Deal found 10/27$283
This American Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/205:40 pmMSN - ONT
1 stop6h 19mAmerican Airlines
Tue 12/26:10 amONT - MSN
1 stop8h 49mAmerican Airlines
Deal found 10/28$289
This American Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/205:40 pmMSN - ONT
1 stop6h 19mAmerican Airlines
Mon 12/111:59 pmONT - MSN
1 stop8h 24mAmerican Airlines
Deal found 10/27$314
This Frontier deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/108:00 pmMSN - ONT
1 stop5h 50mFrontier
Fri 11/146:53 amONT - MSN
1 stop10h 22mFrontier
Deal found 10/26$319
This Frontier deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/318:00 pmMSN - ONT
1 stop5h 50mFrontier
Sun 11/25:53 amONT - MSN
1 stop10h 21mFrontier
Deal found 10/26$325

Cheapflights Fare Finder

 
Customize your flight search to find flights from Madison to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 28, 2025.
Use the filters below to find and compare flights from Madison to Ontario that are best for you.

Fly from

Madison

Fly to

Ontario

Route

Depart

Return

Price

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Thu 1/15

12:38 pm-10:53 pm

2 stops12h 15m

Ontario

Tue 1/20

5:05 am-1:22 pm

1 stop6h 17m

$294

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Fri 1/9

11:00 am-9:07 pm

2 stops12h 07m

Ontario

Tue 1/13

6:00 am-4:44 pm

2 stops8h 44m

$299

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Thu 11/20

1:30 pm-11:52 pm

2 stops12h 22m

Ontario

Mon 12/1

10:25 pm-12:50 pm

2 stops12h 25m

$334

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Tue 11/11

6:00 am-11:54 am

1 stop7h 54m

Ontario

Sat 11/15

12:46 pm-9:55 pm

1 stop7h 09m

$339

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Fri 11/21

2:48 pm-10:31 pm

1 stop9h 43m

Ontario

Tue 12/2

5:05 am-1:11 pm

1 stop6h 06m

$375

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Wed 4/15

12:22 pm-8:18 pm

1 stop9h 56m

Ontario

Sat 4/18

6:00 am-4:38 pm

1 stop8h 38m

$379

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Sat 12/6

8:30 am-12:32 pm

1 stop6h 02m

Ontario

Tue 12/9

5:05 am-1:11 pm

1 stop6h 06m

$379

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Wed 4/15

2:25 pm-10:45 pm

2 stops10h 20m

Ontario

Sat 4/18

5:00 am-1:50 pm

1 stop6h 50m

$384

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Mon 11/10

8:00 pm-11:50 pm

1 stop5h 50m

$111

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Mon 11/24

3:20 pm-11:57 pm

1 stop10h 37m

$147

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 18 results
1
2

Compare providers for flights from Madison to Ontario

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Madison to Ontario in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Madison-Ontario flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Madison-Ontario flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Madison-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Madison-Ontario flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Madison-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Madison to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Madison with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Madison to Ontario

What is the cheapest month to book a flight from Madison to Ontario?

Currently, July is the cheapest month in which you can book a flight from Madison to Ontario (average of $60). Flying from Madison to Ontario in March is currently the most expensive (average of $284). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from MSN to ONT?

Find hourly flight availability from Madison to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 28, 2025.

When flying from Madison to Ontario, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 31% versus a flight at noon.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated October 28, 2025.
Read through reviews of airlines operating flights from Madison to Ontario, such as United Airlines and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,001 reviews

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
United Airlines
7.4
Good
9,001 reviews
United Airlines
7.4
Good
9,001 reviews

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
American Airlines
7.2
Good
11,032 reviews
United Airlines
7.4
Good
9,001 reviews

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

Related info for your journey

Find useful and relevant information for your journey from Madison to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Madison to Ontario?

    A quick flight from Madison to Ontario can take about 7h 54m. United Airlines provides one of the quickest options available for as low as $339. The distance from Madison to Ontario is about 1639 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Madison to Ontario round-trip?

    American Airlines, at $294, was found to be the cheapest airline from Madison to Ontario. An alternate airline flying to your destination would be United Airlines. American Airlines is currently priced 31% below the average price you’ll pay for this route.

  • Can I find deals for flights from Madison to Ontario that include hotel bookings?

    Yes. In addition to deals on Madison to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Madison to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Madison to Ontario.

  • Can I find deals for business class flights from Madison to Ontario?

    Yes. Cheapflights offers flight deals from Madison to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Madison to Ontario?

    Currently, July is the cheapest month in which you can book a flight from Madison to Ontario (average of $60). Flying from Madison to Ontario in March is currently the most expensive (average of $284). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 2 airlines flying from Madison to Ontario

Discover the top 2 airlines that operate flights from Madison to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$294Average$466FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$318Average$486FlexibilityNo cancel feeOn-time69%

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