HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$155+ 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 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
MSN — ONT
Jul 11 — Jul 181
Sat 7/11
Sat 7/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Madison to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 June 11, 2026.

This Frontier deal was found by Cheapflights users on 6/10. 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.
Tue 8/117:55 pm
MSN
-
ONT
1 stop5h 55m
Frontier
Tue 8/256:00 am
ONT
-
MSN
1 stop11h 09m
Frontier
Deal found 6/10$290
This Frontier deal was found by Cheapflights users on 6/10. 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.
Thu 8/137:55 pm
MSN
-
ONT
1 stop5h 55m
Frontier
Tue 8/1810:50 am
ONT
-
MSN
1 stop6h 19m
Frontier
Deal found 6/10$314
This Frontier deal was found by Cheapflights users on 6/10. 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.
Tue 8/187:59 pm
MSN
-
ONT
1 stop5h 50m
Frontier
Sun 8/236:00 am
ONT
-
MSN
1 stop11h 09m
Frontier
Deal found 6/10$320
This Frontier deal was found by Cheapflights users on 6/10. 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.
Thu 7/97:55 pm
MSN
-
ONT
1 stop5h 55m
Frontier
Tue 7/146:00 am
ONT
-
MSN
1 stop11h 10m
Frontier
Deal found 6/10$329
This Orbitz deal was found by Cheapflights users on 6/7. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:59 pm
MSN
-
ONT
1 stop16h 06m
Frontier
Sun 9/66:00 am
ONT
-
MSN
1 stop11h 09m
Frontier
Deal found 6/7$330
This American Airlines deal was found by Cheapflights users on 6/7. 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 7/15:11 pm
MSN
-
ONT
1 stop8h 48m
American Airlines
Wed 7/82:15 pm
ONT
-
MSN
1 stop6h 38m
American Airlines
Deal found 6/7$331
This Frontier deal was found by Cheapflights users on 6/10. 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.
Thu 8/137:55 pm
MSN
-
ONT
1 stop5h 55m
Frontier
Thu 8/206:00 am
ONT
-
MSN
1 stop11h 09m
Frontier
Deal found 6/10$338
This Delta deal was found by Cheapflights users on 6/6. 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.
Tue 9/85:45 am
MSN
-
ONT
1 stop7h 19m
Delta
Sat 9/1911:59 am
ONT
-
MSN
1 stop8h 40m
Delta
Deal found 6/6$341

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 June 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$290
(Frontier)

One-way from

$155
(Frontier)

Popular in

March

Cheapest in

January

Average price

$559
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. 13% potential increase in price ($76 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 June 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 June 11, 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

Wed 7/1

3:18 pm-8:42 pm

1 stop7h 24m

Ontario

Sat 7/4

6:10 am-3:05 pm

1 stop6h 55m

$331
Quickest round-trip

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Thu 7/2

5:11 pm-10:32 pm

1 stop7h 21m

Ontario

Sat 7/4

6:11 am-1:55 pm

1 stop5h 44m

$349

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Sat 8/29

3:55 pm-10:35 pm

1 stop8h 40m

Ontario

Tue 9/1

7:00 am-2:59 pm

1 stop5h 59m

$431

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Tue 6/30

3:18 pm-8:42 pm

1 stop7h 24m

Ontario

Fri 7/3

1:18 pm-9:16 pm

1 stop5h 58m

$445

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Tue 8/11

5:00 am-12:50 pm

2 stops9h 50m

Ontario

Tue 8/25

7:00 am-2:59 pm

1 stop5h 59m

$484

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Tue 8/18

8:10 am-6:11 pm

2 stops12h 01m

Ontario

Tue 8/25

7:00 am-2:59 pm

1 stop5h 59m

$524

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Fri 7/3

5:45 pm-10:51 pm

1 stop7h 06m

Ontario

Tue 7/7

5:00 am-2:10 pm

1 stop7h 10m

$537

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Thu 9/10

4:04 pm-10:59 pm

1 stop8h 55m

Ontario

Sun 9/13

5:00 am-1:13 pm

1 stop6h 13m

$537
Cheapest one-way

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Sun 8/9

7:55 pm-10:04 am

1 stop16h 09m

$186

MadisonOntario

MSN - ONT

MSNONT

Madison Truax Field

Mon 8/17

6:16 pm-11:34 pm

2 stops7h 18m

$213

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

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 June.
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 June 11, 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
9,805 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
9,805 reviews
United Airlines
7.4
Good
9,805 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
11,640 reviews
United Airlines
7.4
Good
9,805 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 5h 55m. Frontier provides one of the quickest options available for as low as $290. 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?

    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 32% 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Madison to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Las Vegas flights
O'Hare Intl to Los Angeles flights
O'Hare Intl to San Francisco flights
O'Hare Intl to San Diego flights
O'Hare Intl to Ontario flights
Minneapolis to Las Vegas flights
Minneapolis to Los Angeles flights
O'Hare Intl to Santa Ana flights
Minneapolis to San Francisco flights
Minneapolis to San Diego flights
O'Hare Intl to San Jose flights
O'Hare Intl to Burbank flights
Milwaukee to Las Vegas flights
O'Hare Intl to Reno flights
Madison to Las Vegas flights
O'Hare Intl to Sacramento flights
Minneapolis to Ontario flights
Minneapolis to Santa Ana flights
O'Hare Intl to Oakland flights
O'Hare Intl to Palm Springs flights
Appleton to Las Vegas flights
O'Hare Intl to Fresno flights
Minneapolis to Burbank flights
O'Hare Intl to Santa Barbara flights
Minneapolis to Sacramento flights
Minneapolis to San Jose flights
Minneapolis to Palm Springs flights
Milwaukee to Los Angeles flights
Madison to San Francisco flights
Minneapolis to Fresno flights
Milwaukee to San Diego flights
Minneapolis to Oakland flights
Minneapolis to Reno flights
Milwaukee to San Francisco flights
O'Hare Intl to Long Beach flights
Green Bay to Las Vegas flights
Appleton to San Francisco flights
Madison to Los Angeles flights
Appleton to Los Angeles flights
Appleton to San Diego flights
Madison to San Diego flights
Wausau to Las Vegas flights
Milwaukee to San Jose flights
Milwaukee to Ontario flights
Green Bay to Los Angeles flights
O'Hare Intl to Monterey flights
Milwaukee to Reno flights
Wausau to San Diego flights

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 June 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$318Average$416FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$323Average$460FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.