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Ontario

$120+ 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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
MSN — ONT
Aug 27 — Sep 31
Thu 8/27
Thu 9/3
1 adult, Economy
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Cheap 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 July 28, 2026.

This Frontier deal was found by Cheapflights users on 7/27. 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.
Thu 9/37:55 pm
MSN
-
ONT
1 stop5h 55m
Frontier
Thu 9/106:15 am
ONT
-
MSN
1 stop11h 00m
Frontier
Deal found 7/27$240
This Frontier deal was found by Cheapflights users on 7/27. 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.
Thu 9/108:00 pm
MSN
-
ONT
1 stop5h 47m
Frontier
Thu 9/176:15 am
ONT
-
MSN
1 stop11h 00m
Frontier
Deal found 7/27$252
This Frontier deal was found by Cheapflights users on 7/27. 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.
Thu 8/207:55 pm
MSN
-
ONT
1 stop5h 55m
Frontier
Sun 8/236:00 am
ONT
-
MSN
1 stop11h 10m
Frontier
Deal found 7/27$290
This CheapOair deal was found by Cheapflights users on 7/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/97:54 pm
MSN
-
ONT
1 stop16h 49m
Frontier
Wed 10/146:00 am
ONT
-
MSN
1 stop10h 47m
Frontier
Deal found 7/28$295
This Frontier deal was found by Cheapflights users on 7/24. 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 10/267:54 pm
MSN
-
ONT
1 stop6h 01m
Frontier
Fri 10/306:15 am
ONT
-
MSN
1 stop10h 43m
Frontier
Deal found 7/24$323
This Frontier deal was found by Cheapflights users on 7/27. 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.
Thu 8/137:55 pm
MSN
-
ONT
1 stop5h 55m
Frontier
Thu 8/2010:49 am
ONT
-
MSN
1 stop6h 21m
Frontier
Deal found 7/27$336
This Frontier deal was found by Cheapflights users on 7/25. 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 10/167:54 pm
MSN
-
ONT
1 stop6h 01m
Frontier
Mon 10/196:00 am
ONT
-
MSN
1 stop10h 47m
Frontier
Deal found 7/25$342
This Delta deal was found by Cheapflights users on 7/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/212:10 pm
MSN
-
ONT
2 stops12h 35m
Delta
Sat 9/1212:17 pm
ONT
-
MSN
1 stop8h 24m
Delta
Deal found 7/27$346
This American Airlines deal was found by Cheapflights users on 7/25. 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 12/106:00 am
MSN
-
ONT
2 stops12h 01m
American Airlines
Wed 12/1610:47 am
ONT
-
MSN
1 stop9h 07m
American Airlines
Deal found 7/25$355

Find 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 July 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$240
(Frontier)

One-way from

$120
(Frontier)

Popular in

June

Cheapest in

January

Average price

$453
Provider with most accurate pricing for Madison Truax Field-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Madison Truax Field-Ontario flights.
Search Deals
From Madison Truax Field to Ontario
Search Deals
One-way flight from Madison Truax Field to Ontario
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($28 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

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 July 28, 2026.
Use the filters below to find and compare flights from Madison to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Fri 8/28

2:50 pm-8:53 pm

1 stop8h 03m

Ontario

Tue 9/1

1:18 pm-8:39 pm

1 stop5h 21m

$445

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Tue 8/25

8:10 am-6:11 pm

2 stops12h 01m

Ontario

Sun 8/30

5:00 am-1:13 pm

1 stop6h 13m

$455

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Sat 8/22

5:00 am-3:41 pm

2 stops12h 41m

Ontario

Tue 8/25

5:00 am-1:13 pm

1 stop6h 13m

$455

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Wed 8/19

6:09 pm-10:35 pm

1 stop6h 26m

Ontario

Mon 8/31

5:00 am-1:13 pm

1 stop6h 13m

$459

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Mon 8/24

5:00 am-12:12 pm

2 stops9h 12m

Ontario

Mon 8/31

5:00 am-1:13 pm

1 stop6h 13m

$499

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Fri 9/25

2:40 pm-8:58 pm

1 stop8h 18m

Ontario

Wed 9/30

1:24 pm-9:07 pm

1 stop5h 43m

$530

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Sat 8/15

5:00 am-3:41 pm

2 stops12h 41m

Ontario

Mon 8/17

1:18 pm-11:59 pm

1 stop8h 41m

$544

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Wed 9/9

4:14 pm-10:59 pm

1 stop8h 45m

Ontario

Sun 9/13

7:00 am-2:59 pm

1 stop5h 59m

$567
Quickest round-trip

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Tue 8/11

8:44 am-12:50 pm

1 stop6h 06m

Ontario

Sat 8/15

5:00 am-1:13 pm

1 stop6h 13m

$674

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Sat 11/21

10:46 am-8:51 pm

2 stops12h 05m

Ontario

Sat 11/28

7:00 am-3:00 pm

1 stop6h 00m

$763

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/25

Showing 1-10 of 19 resultsSorted by cheapest first
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 July.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Madison-Ontario flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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, January is the cheapest month in which you can book a flight from Madison to Ontario (average of $333). Flying from Madison to Ontario in June is currently the most expensive (average of $619). 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.

How much does it cost to fly round-trip from Madison to Ontario?

Airfare is below average for this route at the moment.

Madison to Ontario flights typically cost between $441 and $529 in September.
The cheapest round-trip price found within the last 5 days was $240 on Frontier (Sep 3-Sep 10).

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 July 28, 2026.
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
10,046 reviews

Food

6.6

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Simon,Jun 2024

LAS - LAX

Basic and no-frills. Late timing put pressure on disembarking and making connections.
United Airlines
7.4
Good
10,046 reviews
United Airlines
7.4
Good
10,046 reviews

Food

6.6

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Simon,Jun 2024

LAS - LAX

Basic and no-frills. Late timing put pressure on disembarking and making connections.
American Airlines
7.1
Good
11,839 reviews
United Airlines
7.4
Good
10,046 reviews

Food

6.6

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Simon,Jun 2024

LAS - LAX

Basic and no-frills. Late timing put pressure on disembarking and making connections.

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 8h 03m. United Airlines provides one of the quickest options available for as low as $445. The distance from Madison to Ontario is about 1639 mi.

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

    United Airlines, at $318, was found to be the cheapest airline from Madison to Ontario. An alternate airline flying to your destination would be American Airlines. United Airlines is currently priced 33% 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, January is the cheapest month in which you can book a flight from Madison to Ontario (average of $333). Flying from Madison to Ontario in June is currently the most expensive (average of $619). 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 July 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$318Average$406FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$323Average$460FlexibilityNo cancel feeOn-time71%

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