ONT - MSN

$92 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 12/31. 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

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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41,299,237 searches in the past 7 days on KAYAK

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Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$304
Overall average: $295
United Airlines
Fri 1/16Sun 1/18
ONT - MSN • 1 stop
Cheapest one-way
$92
Typical prices: $123-$165
Frontier
Wed 12/31
ONT - MSN • 1 stop
Top airlines
United Airlines
Cheapest • from $304 (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 • 34% price drop
May
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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!
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

Fri, Jan 16 - Sun, Jan 18
United Airlines Logo
1:24 pm - 9:20 pm
ONT
-
MSN
5h 56m1 stop
United Airlines Logo
4:20 pm - 8:58 pm
MSN
-
ONT
6h 38m1 stop
$304United Airlines
Thu, Jan 15 - Sun, Jan 18
American Airlines Logo
12:57 pm - 9:21 pm
ONT
-
MSN
6h 24m1 stop
American Airlines Logo
3:09 pm - 10:48 pm
MSN
-
ONT
9h 39m1 stop
$309American Airlines
Fri, Jan 16 - Sun, Jan 18
United Airlines Logo
1:24 pm - 9:20 pm
ONT
-
MSN
5h 56m1 stop
United Airlines Logo
6:30 am - 5:43 pm
MSN
-
ONT
13h 13m2 stops
$310United Airlines
Tue, Dec 30 - Mon, Jan 5
American Airlines Logo
11:59 pm - 10:37 am
ONT
-
MSN
8h 38m1 stop
American Airlines Logo
5:40 pm - 9:52 pm
MSN
-
ONT
6h 12m1 stop
$334American Airlines
Wed, Apr 29 - Wed, May 6
American Airlines Logo
11:59 pm - 10:31 am
ONT
-
MSN
8h 32m1 stop
American Airlines Logo
6:41 am - 11:20 am
MSN
-
ONT
6h 39m1 stop
$359American Airlines
Wed, Apr 15 - Sat, May 30
Delta Logo
10:59 pm - 10:13 am
ONT
-
MSN
9h 14m1 stop
Delta Logo
11:11 am - 6:15 pm
MSN
-
ONT
9h 04m1 stop
$364Delta
Sun, Dec 28 - Mon, Jan 5
United Airlines Logo
11:59 pm - 10:10 am
ONT
-
MSN
8h 11m1 stop
United Airlines Logo
5:26 pm - 10:25 pm
MSN
-
ONT
6h 59m1 stop
$365United Airlines
Wed, Apr 29 - Wed, May 6
United Airlines Logo
7:00 am - 3:05 pm
ONT
-
MSN
6h 05m1 stop
United Airlines Logo
9:45 am - 5:47 pm
MSN
-
ONT
10h 02m2 stops
$378United Airlines
Wed, Apr 29 - Wed, May 6
United Airlines Logo
6:53 pm - 8:36 am
ONT
-
MSN
11h 43m2 stops
United Airlines Logo
9:45 am - 5:47 pm
MSN
-
ONT
10h 02m2 stops
$383United Airlines
Fri, Dec 26 - Tue, Dec 30
Frontier Logo
6:45 am - 2:01 pm
ONT
-
MSN
5h 16m1 stop
Frontier Logo
4:34 pm - 11:59 pm
MSN
-
ONT
9h 25m1 stop
$387Frontier
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 $295 (return) on average. On the other hand, the most expensive months are December and September, where the average cost of round-trip tickets is $563 and $515 respectively.

Good to know

Low seasonJanuary
Cheapest flight$92
Best time to beat the crowds with an average 34% drop in price.
Most popular time to fly with an average 12% 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 $92 for a one-way ticket and $304 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 $496 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 $432 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 9092 reviews
7.3Comfort
8.1Crew
7.7Boarding
6.6Food
7.1Entertainment
Airline reviews

Older aircraft, no meal, only food was for purchase. Not impressed United.

4.0 OkayThomas, Nov 2025
SFO - KOA
Read more United Airlines reviews

Older aircraft, no meal, only food was for purchase. Not impressed United.

Not pleasant trip cross country when the entertainment and WiFi system not working. No entertainment for entirety of route. Staff was rather nonchalant in that they dismissed the problem due to age of plane. It would have been nice to know this up front so I could have come prepared to read or download movies before boarding Coincidentally or not, there was a similar issue with the entertainment system on my previous flight I took on my fist leg of the trip. There are no seat TVs, so you must rely on the app when it works. United can do better. Also, what use it it to pay for boarding group 2 when half of the passengers are in the same line as you?

Premium Plus is a really good idea for longer flights

The flight attendants were great, I joked with one I can’t remember her name, a blond, really sweet. I thought it was run well very professional. This was great i survived Spirit, I know for which I speak.

I was in first class. The outlets at my seat did not work. The plane was shabby and run down. I had prepurchsed a day subscription for internet that was not redeemable. I had to repurchase the internet for my flight and then it didn’t work anyway. Quite disappointed in what was supposed to be the launch of a great vacation.

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.

it was fine, decent flight... dont get food besides cookies or pretzels so not sure why you ask about food. same for entertainment..

Horrible. Both legs of my flight were delayed more than 6 hours. No compensation, no screens on the plane, and the plane was not clean.

this plane was really old, had exit row seats and tray was in arm of seat so super uncomfortable to use. another seat they could t even use the tray it was broke. seat i. front of me had duct tape on it cause seat was ripped open... this plane should either be updated or retired.

We loved the steward on the plane. He made the night enjoyable

The flight was smooth, the pilot kept us informed about delays and we arrived more of less on time

The flight was flawless and we even arrived between 20 and 25 minutes early!

Always seated jammed in rear of aircraft Admirals Club food at DFW terminal D was absolute worst food experience and I pay $600/year to eat this dried out junk

Mostly good. Flight was crowded but Airline personnel were very friendly & accommodating. It would be good to have savory snacks rather than just sweet Biscoff cookies.

It was a red eye flight, so no meals were provided, but it was fine with snacks. The seats felt cramped and almost too narrow.

Very crowded flight but what can you expect these days?? Crew was accommodating.

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

Information on your arrival and departure airports