ONT - MSN

$154 Find Cheap Flights from Ontario to Madison

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 9/24. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Madison

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Madison, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Madison, as well as popular online travel agencies
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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

Thu, Oct 30 - Mon, Nov 3
Frontier Logo
6:53 am - 7:15 pmONT-MSN
10h 22m1 stop
Frontier Logo
8:00 pm - 11:50 pmMSN-ONT
5h 50m1 stop
$255Frontier
Find Deal
Sun, Oct 5 - Fri, Oct 10
Frontier Logo
8:59 pm - 7:14 pmONT-MSN
20h 15m1 stop
Frontier Logo
7:59 pm - 11:50 pmMSN-ONT
29h 51m1 stop
$265Frontier
Find Deal
Tue, Oct 7 - Fri, Oct 10
Multiple Airlines Logo
8:00 am - 9:08 amONT-MSN
23h 08m2 stops
Multiple Airlines Logo
7:59 pm - 11:50 pmMSN-ONT
29h 51m1 stop
$288Multiple Airlines
Find Deal
Tue, Oct 7 - Sat, Oct 11
United Airlines Logo
1:15 pm - 9:02 pmONT-MSN
5h 47m1 stop
United Airlines Logo
10:51 am - 6:06 pmMSN-ONT
9h 15m1 stop
$289United Airlines
Find Deal
Tue, Oct 7 - Sat, Oct 11
United Airlines Logo
9:36 am - 10:28 pmONT-MSN
10h 52m2 stops
United Airlines Logo
12:26 pm - 6:06 pmMSN-ONT
7h 40m1 stop
$294United Airlines
Find Deal
Sat, Nov 1 - Sat, Nov 8
Delta Logo
11:36 am - 10:45 pmONT-MSN
9h 09m1 stop
Delta Logo
1:25 pm - 7:19 pmMSN-ONT
7h 54m1 stop
$340Delta
Find Deal
Thu, Oct 16 - Tue, Oct 21
American Airlines Logo
1:00 pm - 9:35 pmONT-MSN
6h 35m1 stop
American Airlines Logo
5:46 pm - 10:42 pmMSN-ONT
6h 56m1 stop
$354American Airlines
Find Deal
Fri, Oct 17 - Tue, Oct 21
Delta Logo
5:50 pm - 10:18 amONT-MSN
14h 28m2 stops
Delta Logo
6:00 am - 12:14 pmMSN-ONT
8h 14m2 stops
$364Delta
Find Deal
Fri, Oct 3 - Mon, Oct 6
American Airlines Logo
1:10 pm - 9:45 pmONT-MSN
6h 35m1 stop
American Airlines Logo
2:45 pm - 6:59 pmMSN-ONT
6h 14m1 stop
$379American Airlines
Find Deal
Mon, Sep 29 - Fri, Oct 3
Multiple Airlines Logo
10:28 pm - 9:08 amONT-MSN
32h 40m2 stops
Multiple Airlines Logo
7:59 pm - 7:54 pmMSN-ONT
25h 55m1 stop
$382Multiple Airlines
Find Deal

Everything you should know

Top airlines
Frontier
Cheapest • from $255 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
January
Cheapest • 27% price drop
September
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$255
Overall average: $323
Frontier
Thu 10/30Mon 11/3
ONT - MSN • 1 stop
Cheapest one-way
$154
Typical prices: $158-319
Frontier
Wed 9/24
ONT - MSN • 1 stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Madison!
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.

What’s the cheapest day of the week to fly from Ontario to Madison?

The average price of all round-trip flights from Ontario to Madison clicked on KAYAK for each day over the last 12 months.

When flying from Ontario to Madison, you should consider leaving on a Saturday and avoid Sundays if you are looking for the best rates. For your return to Ontario, you’ll find the best rates on Saturdays and the most expensive ones on Thursdays.

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 January, where tickets cost $313 (return) on average. On the other hand, the most expensive months are July and May, where the average cost of round-trip tickets is $508 and $498 respectively.

Good to know

Low seasonJanuary
Cheapest flight$154
Best time to beat the crowds with an average 28% drop in price.
Most popular time to fly with an average 10% increase in price.
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 3 days, the lowest price for a flight from Ontario to Madison was $154 for a one-way ticket and $255 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?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Ontario and Madison, with oneworld 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 $488 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 $440 and an overall rating of 7.2.

  • 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 8929 reviews
7.7Boarding
8.1Crew
6.6Food
7.3Comfort
7.1Entertainment
Airline reviews

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

6.0 GoodMarydoug, Aug 2025SJC - DEN
Read more United Airlines reviews

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

Stuck on tarmac for two hours plus a 5.5 hour flight. Rude flight attendant. And no meals, not even for purchase!

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

Not a great experience. We paid for the upgrade for premium economy seats and seated ourselves in very comfortable seats. Someone came along with the same seat on their boarding pass. The aircraft had been changed and as a result we were booted out and sent further back to small uncomfortable seats. After complaining we were moved to emergency row seats, which gave us more leg room but the seats don’t recline. For people in our 70’s we found having to sit upright from California to NJ very uncomfortable. Not sure why they chose to move senior citizens instead of the two people that were allowed to take the more comfortable seats. Not happy.

Everything was great. Only thing that could’ve made it better was buy on board options for hot food, but the snacks were decent. The flight attendants were great. I had no complaints. I was able to make it to my destination safely

Boarded plane and then delayed 1.5 hours while on the plane

Horrific. They missed my connecting flight to San Diego. I didn’t get there until Monday at 9am when I had a mandatory court settlement conference scheduled at 6am since we had parties on the east coast. This caused many issues. All because United apparently forgot to hold the doors open until my flight landed that only had a 10 minute delay. This was the last flight to Southern California. So I couldn’t even rent a car to finish the trip. United cannot be trusted when traveling on specific days and times since weather didn’t have anything to do with the delays.

Really good 😊 the woman at the gate entrance was a little rude checking in our carry-on but i dont think she worked for the airline, she worked for the airport at sacramento, other than that amazing.

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

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 entertainment package was vast and the selections were very current. Keep updating it was great.

The seat was so hard my tailbone was aching The crew was kind of a b**** because I made a joke that I didn't care if they close the door I total c*** when she was trying to f****** act like she was mad at me because I said that The flight was bumpy. Sure you didnt have control over that.

4 hours late, including over +1 hour waiting in plane to take off. Baggage left behind too.

While waiting to claim my checked luggage, I discovered the airline had lost it. After a long wait and inquiries, I discovered it was on another flight. Fortunately, the airline finally sent my luggage home.

Was not able to watch most shows on the entertainment site. They would not load

Very poor delay in dfw was really bad n long

Our flight was 1.5 hours delayed. There was no weather for the inbound flight, so I don't understand why. This meant a VERY late arrival and only a quick nap before my morning flight.

Delayed flight, so I switched fights to SFO to Phoenix , Phoenix to DSM. Excellent service through American Airlines

I didn't like that my paid for seat was changed 2 hours before my flight.

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

Information on your arrival and departure airports

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