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$55+ 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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
MSN — ONT
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
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 septiembre 11, 2025.

Round-trip from

$211
(Frontier)

One-way from

$55
(Trip.com)

Popular in

May

Cheapest in

March

Average price

$428
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. 13% potential increase in price ($71 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 September 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 septiembre 11, 2025.

This Frontier deal was found by Cheapflights users on 9/10. 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.
vie. 11/78:00 pmMSN - ONT
1 stop5h 50mFrontier
lun. 11/106:53 amONT - MSN
1 stop10h 22mFrontier
Deal found 9/10$211
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
lun. 10/277:59 pmMSN - ONT
1 stop29h 51mFrontier
dom. 11/24:17 pmONT - MSN
2 stops24h 58mFrontier
Deal found 9/11$227
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
lun. 10/277:59 pmMSN - ONT
1 stop29h 51mFrontier
lun. 11/36:53 amONT - MSN
1 stop10h 22mFrontier
Deal found 9/11$232
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
vie. 10/318:00 pmMSN - ONT
1 stop17h 10mFrontier
lun. 11/36:53 amONT - MSN
1 stop10h 22mFrontier
Deal found 9/11$241
This Frontier deal was found by Cheapflights users on 9/11. 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.
vie. 11/78:00 pmMSN - ONT
1 stop5h 50mFrontier
vie. 11/146:53 amONT - MSN
1 stop10h 22mFrontier
Deal found 9/11$247
This Delta deal was found by Cheapflights users on 9/11. 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.
sáb. 11/11:25 pmMSN - ONT
1 stop7h 54mDelta
mar. 11/47:05 amONT - MSN
1 stop7h 16mDelta
Deal found 9/11$289
This Delta deal was found by Cheapflights users on 9/11. 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.
sáb. 11/11:25 pmMSN - ONT
1 stop7h 54mDelta
lun. 11/36:00 amONT - MSN
2 stops9h 12mDelta
Deal found 9/11$294
This Delta deal was found by Cheapflights users on 9/11. 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.
mié. 10/2911:00 amMSN - ONT
2 stops13h 41mDelta
lun. 11/35:50 pmONT - MSN
2 stops12h 50mDelta
Deal found 9/11$299
This Frontier deal was found by Cheapflights users on 9/11. 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.
vie. 10/318:00 pmMSN - ONT
1 stop5h 50mFrontier
dom. 11/25:53 amONT - MSN
1 stop10h 22mFrontier
Deal found 9/11$307

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 septiembre 11, 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

lun. 10/27

7:59 pm-11:50 pm

1 stop29h 51m

Ontario

dom. 11/2

4:17 pm-7:15 pm

2 stops24h 58m

$227

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

lun. 10/27

7:59 pm-11:50 pm

1 stop29h 51m

Ontario

lun. 11/3

6:53 am-7:15 pm

1 stop10h 22m

$232

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

lun. 10/27

7:50 am-12:01 pm

1 stop6h 11m

Ontario

lun. 11/3

6:20 am-2:24 pm

1 stop6h 04m

$289

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

sáb. 11/15

3:04 pm-8:44 pm

1 stop7h 40m

Ontario

jue. 11/20

7:00 am-5:50 pm

1 stop8h 50m

$289

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

sáb. 11/1

1:25 pm-7:19 pm

1 stop7h 54m

Ontario

sáb. 11/8

11:48 am-8:51 pm

1 stop7h 03m

$289

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

sáb. 11/1

12:19 pm-10:51 pm

2 stops12h 32m

Ontario

sáb. 11/8

1:29 pm-9:02 pm

1 stop5h 33m

$294

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

sáb. 11/1

1:25 pm-7:19 pm

1 stop7h 54m

Ontario

lun. 11/3

6:00 am-5:12 pm

2 stops9h 12m

$294

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

sáb. 11/1

1:25 pm-7:19 pm

1 stop7h 54m

Ontario

mar. 11/4

6:00 am-5:12 pm

2 stops9h 12m

$294

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

sáb. 11/1

1:25 pm-7:19 pm

1 stop7h 54m

Ontario

mié. 11/5

1:15 pm-10:29 pm

2 stops7h 14m

$294

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

vie. 10/31

1:25 pm-7:19 pm

1 stop7h 54m

Ontario

mar. 11/4

7:05 am-4:21 pm

1 stop7h 16m

$314

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 18 results
1
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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, August is the cheapest month in which you can book a flight from Madison to Ontario (average of $246). Flying from Madison to Ontario in March is currently the most expensive (average of $328). 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 septiembre 11, 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 32% 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 septiembre 11, 2025.
Read through reviews of airlines operating flights from Madison to Ontario, such as United Airlines, American Airlines, and Frontier. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,937 reviews

Food

6.6

Boarding

7.7

Overall

7.4

Entertainment

7.1

Crew

8.1

Comfort

7.3

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
8,937 reviews
United Airlines
7.4
Good
8,937 reviews

Food

6.6

Boarding

7.7

Overall

7.4

Entertainment

7.1

Crew

8.1

Comfort

7.3

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
10,000 reviews
United Airlines
7.4
Good
8,937 reviews

Food

6.6

Boarding

7.7

Overall

7.4

Entertainment

7.1

Crew

8.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
Frontier
5.8
Fair
3,177 reviews
United Airlines
7.4
Good
8,937 reviews

Food

6.6

Boarding

7.7

Overall

7.4

Entertainment

7.1

Crew

8.1

Comfort

7.3

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 6h 11m. Frontier provides one of the quickest options available for as low as $289. 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?

    Frontier, at $127, was found to be the cheapest airline from Madison to Ontario.Alternate airlines to your destination round-trip include American Airlines and United Airlines. Frontier is currently priced 70% 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, August is the cheapest month in which you can book a flight from Madison to Ontario (average of $246). Flying from Madison to Ontario in March is currently the most expensive (average of $328). 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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Alternative routes for Madison to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Madison to Ontario

Discover the top 3 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 septiembre 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$127Average$164FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$294Average$464FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$313Average$487FlexibilityNo cancel feeOn-time69%

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