$130+ Cheap flights from Ontario to Madison (ONT - MSN)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/20. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MSN
Oct 4 — Oct 111
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Madison 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
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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 Ontario to Madison
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Cheapest flights from Ontario to MadisonExplore the most affordable flight options available from Ontario to Madison. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 4, 2026.
Explore the most affordable flight options available from Ontario to Madison. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 4, 2026.
This Frontier deal was found by Cheapflights users on 9/3. 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 9/246:15 am -
1 stop11h 00m
Thu 10/18:00 pm -
1 stop16h 30m
Deal found 9/3![Frontier logo]()
$338
This American Airlines deal was found by Cheapflights users on 9/2. 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 9/126:15 am -
1 stop5h 45m
Sat 9/267:17 am -
1 stop8h 08m
Deal found 9/2![American Airlines logo]()
$350
This American Airlines deal was found by Cheapflights users on 8/31. 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.
Fri 10/22:22 pm -
1 stop6h 37m
Mon 10/55:53 pm -
1 stop7h 59m
Deal found 8/31![American Airlines logo]()
$359
This American Airlines deal was found by Cheapflights users on 8/31. 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 9/107:11 pm -
2 stops11h 03m
Tue 9/2211:37 am -
2 stops8h 40m
Deal found 8/31![American Airlines logo]()
$360
This American Airlines deal was found by Cheapflights users on 9/1. 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.
Fri 9/1112:37 pm -
1 stop8h 20m
Sat 9/197:17 am -
1 stop6h 30m
Deal found 9/1![American Airlines logo]()
$385
This Delta deal was found by Cheapflights users on 9/1. 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.
Sun 9/2010:00 pm -
2 stops8h 52m
Fri 10/26:00 am -
2 stops14h 15m
Deal found 9/1![Delta logo]()
$404
Best flights from Ontario to MadisonDiscover carefully curated flight deals from Ontario to Madison that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 4, 2026.
Discover carefully curated flight deals from Ontario to Madison that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 4, 2026.
This United Airlines deal was found by Cheapflights users on 9/3. 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 2/61:00 pm -
1 stop5h 41m
Tue 2/98:22 am -
2 stops11h 25m
Deal found 9/3![United Airlines logo]()
$446
This Delta deal was found by Cheapflights users on 8/30. 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.
Sat 10/106:00 pm -
2 stops14h 13m
Tue 10/136:00 am -
2 stops8h 36m
Deal found 8/30![Delta logo]()
$509
This United Airlines deal was found by Cheapflights users on 9/2. 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.
Sun 9/205:00 am -
1 stop6h 13m
Fri 10/22:40 pm -
1 stop8h 18m
Deal found 9/2![United Airlines logo]()
$494
Last-minute flights from Ontario to MadisonDiscover last-minute flight deals from Ontario to Madison. Data last updated September 4, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Madison. Data last updated September 4, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 8/31. 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 9/107:11 pm -
2 stops11h 03m
Tue 9/2211:37 am -
2 stops8h 40m
Deal found 8/31![American Airlines logo]()
$360
This American Airlines deal was found by Cheapflights users on 9/1. 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.
Fri 9/1112:37 pm -
1 stop8h 20m
Sat 9/197:17 am -
1 stop6h 30m
Deal found 9/1![American Airlines logo]()
$385
This American Airlines deal was found by Cheapflights users on 9/2. 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 9/126:15 am -
1 stop5h 45m
Sat 9/267:17 am -
1 stop8h 08m
Deal found 9/2![American Airlines logo]()
$350
This Delta deal was found by Cheapflights users on 9/1. 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.
Sun 9/2010:00 pm -
2 stops8h 52m
Fri 10/26:00 am -
2 stops14h 15m
Deal found 9/1![Delta logo]()
$404
This Frontier deal was found by Cheapflights users on 9/3. 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 9/246:15 am -
1 stop11h 00m
Thu 10/18:00 pm -
1 stop16h 30m
Deal found 9/3![Frontier logo]()
$338
This American Airlines deal was found by Cheapflights users on 8/31. 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.
Fri 10/22:22 pm -
1 stop6h 37m
Mon 10/55:53 pm -
1 stop7h 59m
Deal found 8/31![American Airlines logo]()
$359
One-way flights from Ontario to MadisonSearch for one-way flight options from Ontario to Madison. Find affordable one-way fares based on user searches. Data last updated September 4, 2026.
Search for one-way flight options from Ontario to Madison. Find affordable one-way fares based on user searches. Data last updated September 4, 2026.
This Frontier deal was found by Cheapflights users on 8/30. 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 9/2011:45 am -
1 stop5h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/30![Frontier logo]()
$130
This Frontier deal was found by Cheapflights users on 8/30. 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 9/2411:45 am -
1 stop5h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/30![Frontier logo]()
$169
This Frontier deal was found by Cheapflights users on 9/1. 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 9/1311:45 am -
1 stop5h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![Frontier logo]()
$180
This Delta deal was found by Cheapflights users on 8/30. 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 12/16:00 am -
2 stops11h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/30![Delta logo]()
$338
This Delta deal was found by Cheapflights users on 9/2. 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.
Fri 11/612:16 pm -
1 stop8h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Delta logo]()
$353
This KAYAK deal was found by Cheapflights users on 9/2. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/305:00 am -
1 stop6h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![United Airlines logo]()
$365
This United Airlines deal was found by Cheapflights users on 8/30. 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.
Wed 9/235:00 am -
1 stop6h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/30![United Airlines logo]()
$379
This United Airlines deal was found by Cheapflights users on 8/30. 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.
Sun 9/205:00 am -
2 stops12h 01m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/30![United Airlines logo]()
$384
This Delta deal was found by Cheapflights users on 8/31. 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 10/2212:16 pm -
1 stop8h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/31![Delta logo]()
$400
This Delta deal was found by Cheapflights users on 8/31. 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 9/2312:19 pm -
1 stop8h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/31![Delta logo]()
$410
Find flight deals from Ontario to Madison
Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Madison (MSN). 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 September 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $338 (Frontier) |
One-way from | $130 (Frontier) |
Popular in | November |
Cheapest in | January |
Average price | $492 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Madison 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 7,457,451 searches. Data last updated September 4, 2026.
Use the filters below to find and compare flights from Ontario to Madison that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioMadison
ONT Ontario - MSN Madison Truax Field
ONTMSN
Ontario
Wed 9/23
5:00 am-1:13 pm
1 stop6h 13m
Madison Truax Field
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$379
OntarioMadison
ONT Ontario - MSN Madison Truax Field
ONTMSN
Ontario
Mon 10/5
1:24 pm-9:07 pm
1 stop5h 43m
Madison Truax Field
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$379
OntarioMadison
ONT Ontario - MSN Madison Truax Field
ONTMSN
Ontario
Fri 10/30
5:00 am-1:25 pm
1 stop6h 25m
Madison Truax Field
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$379
Quickest round-trip
OntarioMadison
ONT Ontario - MSN Madison Truax Field
ONTMSN
Ontario
Thu 10/29
1:32 pm-8:43 pm
1 stop5h 11m
Madison Truax Field
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$379
OntarioMadison
ONT Ontario - MSN Madison Truax Field
ONTMSN
Ontario
Wed 10/14
6:02 am-11:12 pm
2 stops15h 10m
Madison Truax Field
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$384
OntarioMadison
ONT Ontario - MSN Madison Truax Field
ONTMSN
Ontario
Thu 10/29
6:56 pm-10:52 am
2 stops13h 56m
Madison Truax Field
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$384
OntarioMadison
ONT Ontario - MSN Madison Truax Field
ONTMSN
Ontario
Sun 9/20
5:00 am-7:01 pm
2 stops12h 01m
Madison Truax Field
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$384
OntarioMadison
ONT Ontario - MSN Madison Truax Field
ONTMSN
Ontario
Sat 11/7
5:00 am-7:07 pm
2 stops12h 07m
Madison Truax Field
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$384
OntarioMadison
ONT Ontario - MSN Madison Truax Field
ONTMSN
Ontario
Sat 2/6
1:00 pm-8:41 pm
1 stop5h 41m
Madison Truax Field
Tue 2/9
8:22 am-5:47 pm
2 stops11h 25m
$446
OntarioMadison
ONT Ontario - MSN Madison Truax Field
ONTMSN
Ontario
Sat 9/19
7:00 am-5:07 pm
1 stop8h 07m
Madison Truax Field
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$459
Showing 1-10 of 12 resultsSorted by cheapest first
Compare providers for flights from Ontario to Madison
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 Ontario to Madison in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Ontario-Madison flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Madison flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Madison flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Ontario-Madison 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 Ontario-Madison 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 Ontario to Madison
Have a flexible travel schedule? Discover the best time to fly to Madison from Ontario with our price prediction graph.
ONT-MSN
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.
Reviews of airlines servicing Madison
Get insights into the airlines that provide service to Madison. 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 Madison. Reviews last updated September 4, 2026.
Get a feel of what it's like to fly with United Airlines and American Airlines from Ontario to Madison by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.3
Food
6.7
Boarding
7.7
Entertainment
7.1
Overall
7.4
Crew
8.1
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Comfort
7.3
Food
6.7
Boarding
7.7
Entertainment
7.1
Overall
7.4
Crew
8.1
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Comfort
7.3
Food
6.7
Boarding
7.7
Entertainment
7.1
Overall
7.4
Crew
8.1
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Related info for your journey
Find useful and relevant information for your journey from Ontario to Madison. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Madison?
Book flights to Madison if you plan to visit one of these locationsSun Prairie
Middleton
Fitchburg
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Complete your trip
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Search flights from Ontario to Madison by cabin class
Find flights from Ontario to Madison, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Madison
Explore flights to Madison departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 4, 2026.
Ontario and Madison flights
Browse other Ontario and Madison flight options. Last updated on September 4, 2026.
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Browse through other flights departing from Ontario. Flights are based on user searches made on Cheapflights and were last updated on September 4, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 2 airlines flying from Ontario to Madison
Discover the top 2 airlines that operate flights from Ontario to Madison. 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 7,457,451 searches. Data last updated September 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$288 | Average$467 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$333 | Average$590 | FlexibilityNo cancel fee | On-time71% |