ONT - MSN

$126 Find Cheap Flights from Ontario to Madison - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Madison departing on 10/26. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$240
Typical prices: $313-$546
Frontier
Sat 10/10Wed 10/21
ONT - MSN • 1 stop
Cheapest one-way
$126
Frontier
Mon 10/26
ONT - MSN • 1 stop
Top airlines
Cheapest • from $240 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Ontario and Madison. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $487 (round-trip)
Shortest trip • 6h 15m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Madison!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to Madison (ONT-MSN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Madison that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Madison

Sat, Oct 10 - Wed, Oct 21
Frontier Logo
6:00 am - 6:47 pm
ONT
-
MSN
10h 47m
1 stop
Frontier Logo
7:54 pm - 11:55 pm
MSN
-
ONT
6h 01m
1 stop
$240Frontier
Thu, Sep 3 - Sun, Sep 6
Frontier Logo
6:00 am - 7:10 pm
ONT
-
MSN
11h 10m
1 stop
Frontier Logo
7:55 pm - 11:50 pm
MSN
-
ONT
5h 55m
1 stop
$240Frontier
Thu, Sep 10 - Sun, Sep 13
Frontier Logo
6:15 am - 7:15 pm
ONT
-
MSN
11h 00m
1 stop
Frontier Logo
8:00 pm - 11:47 pm
MSN
-
ONT
5h 47m
1 stop
$240Frontier
Thu, Sep 17 - Sun, Sep 20
Frontier Logo
6:15 am - 7:15 pm
ONT
-
MSN
11h 00m
1 stop
Frontier Logo
8:00 pm - 11:47 pm
MSN
-
ONT
5h 47m
1 stop
$252Frontier
Tue, Nov 3 - Sat, Nov 7
American Airlines Logo
12:42 pm - 9:46 pm
ONT
-
MSN
7h 04m
1 stop
American Airlines Logo
11:37 am - 6:47 pm
MSN
-
ONT
9h 10m
1 stop
$341American Airlines
Tue, Sep 1 - Tue, Sep 22
American Airlines Logo
12:59 pm - 8:40 pm
ONT
-
MSN
5h 41m
1 stop
American Airlines Logo
7:17 am - 1:25 pm
MSN
-
ONT
8h 08m
1 stop
$341American Airlines
Sat, Sep 26 - Tue, Sep 29
American Airlines Logo
6:15 am - 2:00 pm
ONT
-
MSN
5h 45m
1 stop
American Airlines Logo
7:17 am - 11:47 am
MSN
-
ONT
6h 30m
1 stop
$341American Airlines
Tue, Nov 3 - Sat, Nov 7
United Airlines Logo
1:29 pm - 8:43 pm
ONT
-
MSN
5h 14m
1 stop
United Airlines Logo
10:46 am - 8:51 pm
MSN
-
ONT
12h 05m
2 stops
$346United Airlines
Wed, Aug 26 - Wed, Sep 2
United Airlines Logo
5:00 am - 1:13 pm
ONT
-
MSN
6h 13m
1 stop
United Airlines Logo
8:10 am - 6:16 pm
MSN
-
ONT
12h 06m
2 stops
$346United Airlines
Sat, Nov 14 - Wed, Nov 18
United Airlines Logo
5:00 am - 2:06 pm
ONT
-
MSN
7h 06m
1 stop
United Airlines Logo
2:38 pm - 8:51 pm
MSN
-
ONT
8h 13m
1 stop
$441United Airlines
Booking Insights

KAYAK's insights & trends for Ontario to Madison flights

Get data-powered insights and trends into flights from Ontario to Madison to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Ontario to Madison?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Ontario to Madison departing in September.

Flight prices are below average for this route right now.

Flights to Madison from Ontario usually cost between $353 and $616 in September.
The lowest price found in the past 5 days was $240 on Frontier (Sep 3-Sep 6).

What is the cheapest month to fly from Ontario to Madison?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Madison, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Ontario to Madison is December, where tickets cost $0 (return) on average. On the other hand, the most expensive months are March and April, where the average cost of round-trip tickets is $849 and $734 respectively.

Good to know

Cheapest flight

$126
Most popular time to fly and prices are also 19% lower on average.
Flight from Ontario to Madison

When to book flights from Ontario to Madison

Are your dates flexible? Find out the best times to travel from Ontario to Madison based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ontario to Madison

  • What is the cheapest flight from Ontario to Madison?

    In the last 5 days, the lowest price for a flight from Ontario to Madison was $126 for a one-way ticket and $240 for a round-trip.

  • Do I need a passport to fly between Ontario and Madison?

    A passport is not required to fly from Ontario to Madison.

  • Which aircraft models fly most regularly from Ontario to Madison?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Madison?

    Star Alliance, and oneworld are the airline alliances operating flights between Ontario and Madison, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Ontario to Madison, United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from Ontario to Madison are United Airlines and American Airlines. With an average price for the route of $467 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $571 and an overall rating of 7.1.

  • How does KAYAK find such low prices on flights from Ontario to Madison?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Madison.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Madison?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Madison from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Madison?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Madison with an airline and back to Ontario with another airline. Booking your flights between Ontario and MSN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Madison?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Madison from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Ontario to Madison

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Madison. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Madison? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 10046 reviews
6.6Food
7.7Boarding
8.1Crew
7.1Entertainment
7.3Comfort
Airline reviews

Flight was late, the only reason I almost missed my flight was that my connection was also late.

2.0 MediocreJoseph, Jul 2026
PSP - DEN
Read more United Airlines reviews

Flight was late, the only reason I almost missed my flight was that my connection was also late.

Baggage claim signs were not updated with my flight information, so I had to guess. The app wasn't updated either.

It was a short, comfortable flight. It did leave an hour late due to the pilot having to be replaced (family emergency) but that didn’t inconvenience myself & my friend. The situation was explained, eventually.

UA594 was delayed multiple times. I ended up getting picked up so I can make it in time for work 6AM on Monday, 7/6/2026

Boarded from a very small gate at LAX. Staff at gate had us line up, then waited 25 minutes to board without a word of explanation. Plane arrived on time then waited 20 minutes for a plane to vacate our gate. Majority of bags arrived after 15 minutes but it took an hour for a small number of remaining bags to be off-loaded despite my “priority” bag tag.

Seat pitch is horrible especially on the 15 hour flight. Gate crew at SFO was Outstanding. The flight crew was also great.

Deplaning was delayed because of Jetbridge equipment issues in MKE, causing an issue on an otherwise great flight.

Delays took 2hours and thirty minutes making me miss my connecting flight and make me sit in the Chicago airport for 9 hours

No real agent onsite helping you for missing luggage there. Not like the other airline next to UA desk, they have staff attending in their desk assisting answer/helping luggage issue, even after midnight.

The wi-fi was awful. I paid $8 each way and got little , except frustration. .

American was the airline that Starlux contracted for this trip. I arrived in time to make the connecting flight on American, and then the baggage-handler debacle happened. For some reason, the first class and premium economy passengers' luggage was unloaded first. Never seen this happen before. They had handlers removing the bags from the carousel for those passengers. Meanwhile, all of the economy passengers were waiting for their bags, including me. And there were a lot of bags because it was an international flight packed full. While waiting for 45 minutes, my bag didn't show. Meanwhile, an American representative showed up asking if anyone has a connecting flight to Phoenix. Of course I spoke up, and they proceeded to try to find my bag because I had to take a bus to the actual terminal to catch my flight. Which I was not informed of before I arrived. After another 15 minutes of searching, my bag was finally found with the first-class passengers' bags because they had pulled it by mistake. So I rushed to the terminal with the American representative to catch my flight, and they informed me that I missed it and could not get another flight until the next day. Of course, after being on an international flight for 18 hours, I was in no mood to hear this. Now, to be fair, there were a few American employees who tried to help me. After hearing about the missed flight, they got a supervisor to talk to. I expressed my situation to the supervisor, and she was not helpful until I asked for compensation. She agreed to get me a hotel room for the night. So I agreed, and she disappeared into her office, and I waited. And waited. And waited. And waited. While waiting, I was asked by three different employees who knew of my situation if I had been helped. I told them I was waiting for the supervisor to get the hotel room, and they said they would check. Finally, after waiting for 75 minutes, one of the employees who had asked me if I had been helped arrived with my hotel room and arranged a ride to the hotel for me. Never saw the supervisor again. It was now 8 o'clock; I arrived at 5:45! My rebooked fight was scheduled for 6:11 this morning and I have now been informed it has been delayed until 10:00. So am I happy with American? NO I'M NOT!! ;

Ontario airport boarding was very easy to park and access, is clean and TSA took 10 minutes total. Check-in was a breeze and cruise was very nice.

Good flight, seated and had a water within 5 minutes. Crew was hospitable.

Never ontime and always delays. Long waits for customer service and often app doesn’t work

The flight was on time and arrived early. The crew were friendly and helpful.

American airlines suck they delay the flights all the time made me sleep in an airport because my flight was delayed and I miss my connecting flight

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

VERY disappointed at the agent checking in my luggage. I know that the weight limit is 23 kg, a little over 50 pounds (50.71 pounds). Yet the agent kept repeating "50 pounds". So I said, the limit is 23 kg, and she had the audacity to say 'no, it is 22 kg!" Imagine my surprise. Was she ignorant or was she poorly trained? Not sure. The boarding process was pretty good. The speakers were loud enough so I still could hear them despite inconsiderate passengers continuing to speak while the announcements were going on. During the flight, the teenage girl sitting behind me kept pressing her feet to the back of my chair. I turned around several times, yet she did not get the hint. I did not make a fuss since I sense I had a bad streak that night with AA, so I just did the best I can to lean forward and not let that bother me.

American cancelled our flight home. Zero option for hotel, alternative transportation and took 3 hours to find our bags so we could take a 3 hour UBER ride home on our dime. Never flying AA again.

It was wonderful upgrading to first. Plane was so cold thou. Crew was great. Wish there was a food option in first for such a long flight. Doesnt matter the time of day. Chintzy.

Everything you need to know for your flight from Ontario to Madison

Information on your arrival and departure airports