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Ontario

$131+ 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 6/14. Fares are subject to change and may not be available on all flights or dates of travel.
MSN — ONT
May 28 — Jun 41
Thu 5/28
Thu 6/4
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 April 28, 2026.

This Frontier deal was found by Cheapflights users on 4/27. 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.
Sat 5/237:59 pm
MSN
-
ONT
1 stop5h 50m
Frontier
Thu 5/2810:50 am
ONT
-
MSN
1 stop6h 24m
Frontier
Deal found 4/27$210
This Frontier deal was found by Cheapflights users on 4/23. 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 6/187:59 pm
MSN
-
ONT
1 stop5h 50m
Frontier
Tue 6/236:00 am
ONT
-
MSN
1 stop11h 09m
Frontier
Deal found 4/23$250
This Frontier deal was found by Cheapflights users on 4/27. 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.
Tue 6/167:59 pm
MSN
-
ONT
1 stop5h 50m
Frontier
Sun 6/216:00 am
ONT
-
MSN
1 stop11h 09m
Frontier
Deal found 4/27$270
This Frontier deal was found by Cheapflights users on 4/27. 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 7/307:59 pm
MSN
-
ONT
1 stop5h 51m
Frontier
Sun 8/910:49 am
ONT
-
MSN
1 stop6h 21m
Frontier
Deal found 4/27$290
This Delta deal was found by Cheapflights users on 4/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/11:31 pm
MSN
-
ONT
2 stops12h 18m
Delta
Wed 7/85:10 pm
ONT
-
MSN
2 stops13h 42m
Delta
Deal found 4/26$301
This American Airlines deal was found by Cheapflights users on 4/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1611:50 am
MSN
-
ONT
1 stop8h 48m
American Airlines
Sat 5/2311:59 pm
ONT
-
MSN
1 stop8h 39m
American Airlines
Deal found 4/24$330
This Delta deal was found by Cheapflights users on 4/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/216:30 am
MSN
-
ONT
2 stops14h 06m
Delta
Tue 5/2610:00 pm
ONT
-
MSN
2 stops11h 08m
Delta
Deal found 4/24$341
This Frontier deal was found by Cheapflights users on 4/26. 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 5/77:59 pm
MSN
-
ONT
1 stop5h 50m
Frontier
Sun 5/106:00 am
ONT
-
MSN
1 stop11h 14m
Frontier
Deal found 4/26$350
This United Airlines deal was found by Cheapflights users on 4/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/233:50 pm
MSN
-
ONT
1 stop9h 01m
United Airlines
Tue 5/265:00 am
ONT
-
MSN
1 stop7h 08m
United Airlines
Deal found 4/23$355
This American Airlines deal was found by Cheapflights users on 4/27. 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.
Wed 7/12:39 pm
MSN
-
ONT
1 stop5h 42m
American Airlines
Wed 7/812:35 pm
ONT
-
MSN
1 stop8h 18m
American Airlines
Deal found 4/27$359

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 April 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$210
(Frontier)

One-way from

$131
(Expedia)

Popular in

March

Cheapest in

January

Average price

$587
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. 16% potential increase in price ($94 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 April 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

Thu 5/21

6:30 am-6:36 pm

2 stops14h 06m

Ontario

Tue 5/26

10:00 pm-11:08 am

2 stops11h 08m

$341

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Sat 5/16

6:30 am-12:19 pm

2 stops7h 49m

Ontario

Sat 5/23

10:00 pm-11:08 am

2 stops11h 08m

$379
Quickest round-trip

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Sat 5/9

12:18 pm-6:01 pm

1 stop7h 43m

Ontario

Sat 5/23

5:00 am-2:08 pm

1 stop7h 08m

$394

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Thu 5/21

3:53 pm-10:51 pm

1 stop8h 58m

Ontario

Tue 5/26

5:00 am-2:08 pm

1 stop7h 08m

$416

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Thu 5/21

3:53 pm-10:51 pm

1 stop8h 58m

Ontario

Mon 5/25

5:00 am-2:08 pm

1 stop7h 08m

$423

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Sat 5/9

11:48 am-9:48 pm

2 stops12h 00m

Ontario

Sat 5/23

10:00 pm-11:08 am

2 stops11h 08m

$442

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Wed 7/29

3:46 pm-10:51 pm

1 stop9h 05m

Ontario

Tue 8/4

1:18 pm-9:07 pm

1 stop5h 49m

$453

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Tue 7/28

3:46 pm-10:51 pm

1 stop9h 05m

Ontario

Tue 8/4

1:18 pm-9:07 pm

1 stop5h 49m

$453

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Sat 6/13

6:00 am-12:10 pm

2 stops8h 10m

Ontario

Wed 6/24

1:00 pm-11:02 pm

2 stops8h 02m

$454

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Sat 5/23

11:48 am-9:48 pm

2 stops12h 00m

Ontario

Tue 5/26

10:00 pm-11:08 am

2 stops11h 08m

$454

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/26

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

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 April.
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 $331). Flying from Madison to Ontario in March is currently the most expensive (average of $608). 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?

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 April 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
9,672 reviews

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.1

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
9,672 reviews
United Airlines
7.4
Good
9,672 reviews

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.1

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
7.1
Good
11,677 reviews
United Airlines
7.4
Good
9,672 reviews

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.1

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 43m. Delta provides one of the quickest options available for as low as $394. 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 $308, 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 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 $331). Flying from Madison to Ontario in March is currently the most expensive (average of $608). 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

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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 April 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$308Average$437FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$318Average$406FlexibilityNo cancel feeOn-time69%

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