ONT - MCI

$120 Find Cheap Flights from Ontario to Kansas City

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 Kansas City departing on 7/29. 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 Kansas City

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Kansas City, 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 Kansas City, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$228
Typical prices: $204-$346
Frontier
Tue 8/11Sat 8/15
ONT - MCI • 1 stop
Cheapest one-way
$120
Typical prices: $192-$293
Frontier
Wed 7/29
ONT - MCI • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Ontario and Kansas City. You'll need at least 1 connection.
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Top layover airports
Cheapest • Avg $247 (round-trip)
Shortest trip • 4h 52m (one-way)
Insights
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When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 58% compared to booking last minute.
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When to travel
Cheapest • 35% price drop
Most popular
Good to know
Good to know
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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 Kansas City!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to Kansas City (ONT-MCI)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Kansas City 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 Kansas City

Tue, Aug 11 - Sat, Aug 15
Frontier Logo
6:00 am - 1:00 pm
ONT
-
MCI
29h 00m
1 stop
Frontier Logo
1:45 pm - 11:50 pm
MCI
-
ONT
12h 05m
1 stop
$228Frontier
Wed, Jul 22 - Wed, Jul 29
Frontier Logo
3:40 pm - 3:47 pm
ONT
-
MCI
22h 07m
1 stop
Frontier Logo
1:45 pm - 11:50 pm
MCI
-
ONT
12h 05m
1 stop
$238Frontier
Wed, Sep 2 - Wed, Sep 9
Frontier Logo
7:56 pm - 12:53 pm
ONT
-
MCI
14h 57m
1 stop
Frontier Logo
2:17 pm - 11:55 pm
MCI
-
ONT
11h 38m
1 stop
$242Frontier
Wed, Aug 5 - Wed, Aug 12
Frontier Logo
10:49 am - 1:00 pm
ONT
-
MCI
24h 11m
1 stop
Frontier Logo
1:45 pm - 11:50 pm
MCI
-
ONT
12h 05m
1 stop
$243Frontier
Tue, Aug 11 - Wed, Aug 12
Frontier Logo
6:00 am - 1:00 pm
ONT
-
MCI
5h 00m
1 stop
Frontier Logo
1:45 pm - 11:50 pm
MCI
-
ONT
12h 05m
1 stop
$244Frontier
Sat, Aug 15 - Sat, Aug 22
Frontier Logo
6:00 am - 1:00 pm
ONT
-
MCI
5h 00m
1 stop
Frontier Logo
1:38 pm - 11:50 pm
MCI
-
ONT
12h 12m
1 stop
$245Frontier
Wed, Oct 14 - Tue, Oct 20
Frontier Logo
6:00 am - 1:22 pm
ONT
-
MCI
5h 22m
1 stop
Frontier Logo
2:17 pm - 11:55 pm
MCI
-
ONT
11h 38m
1 stop
$247Frontier
Wed, Sep 2 - Sat, Sep 12
Frontier Logo
7:56 pm - 12:53 pm
ONT
-
MCI
14h 57m
1 stop
Frontier Logo
2:17 pm - 11:55 pm
MCI
-
ONT
11h 38m
1 stop
$248Frontier
Sat, Jul 18 - Sat, Jul 25
Frontier Logo
6:00 am - 1:00 pm
ONT
-
MCI
5h 00m
1 stop
Frontier Logo
1:45 pm - 11:50 pm
MCI
-
ONT
12h 05m
1 stop
$249Frontier
Wed, Jul 22 - Wed, Jul 29
Frontier Logo
6:00 am - 1:00 pm
ONT
-
MCI
5h 00m
1 stop
Frontier Logo
1:45 pm - 11:50 pm
MCI
-
ONT
12h 05m
1 stop
$257Frontier
Booking Insights

KAYAK's insights & trends for Ontario to Kansas City flights

Get data-powered insights and trends into flights from Ontario to Kansas City 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 Kansas City?

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 Kansas City departing in August.

What is the cheapest month to fly from Ontario to Kansas City?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Kansas City, 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 Kansas City is August, where tickets cost $247 (return) on average. On the other hand, the most expensive months are January and June, where the average cost of round-trip tickets is $472 and $466 respectively.

How far in advance should I book a flight from Ontario to Kansas City?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Ontario to Kansas City, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Ontario to Kansas City, you should book around 3 weeks before departure, which saves you about 58% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$120
Best time to beat the crowds but there is an average 23% increase in price.
Most popular time to fly with an average 17% increase in price.
Flight from Ontario to Kansas City

When to book flights from Ontario to Kansas City

Are your dates flexible? Find out the best times to travel from Ontario to Kansas City 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 Kansas City

  • What is the cheapest flight from Ontario to Kansas City?

    In the last 5 days, the lowest price for a flight from Ontario to Kansas City was $120 for a one-way ticket and $228 for a round-trip.

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

    A passport is not required to fly from Ontario to Kansas City.

  • Which aircraft models fly most regularly from Ontario to Kansas City?

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

  • Which airline alliances offer flights from Ontario to Kansas City?

    SkyTeam, and oneworld are the airline alliances operating flights between Ontario and Kansas City, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Ontario to Kansas City, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Ontario to Kansas City are Southwest and Delta. With an average price for the route of $424 and an overall rating of 7.9, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $426 and an overall rating of 7.8.

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

    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 Kansas City.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Kansas City 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 Kansas City?

    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 Kansas City with an airline and back to Ontario with another airline. Booking your flights between Ontario and MCI 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 Kansas City?

    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 Kansas City 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 4 airlines serving from Ontario to Kansas City

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Kansas City. 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 Kansas City? 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.
7.9
SouthwestOverall score based on 4246 reviews
7.5Entertainment
8.1Boarding
8.6Crew
8.0Comfort
7.0Food
Airline reviews

Flight was delayed, full flight and I had to change gates. Southwest flights are always late later in the day.

4.0 OkaySteven, Jun 2026
ONT - LAS
Read more Southwest reviews

Flight was delayed, full flight and I had to change gates. Southwest flights are always late later in the day.

Communication about the delayed flight was poor. We were told to move gates three times but that was bad information. We went from gate 128 to gate 126 and then to gate 123 and back to gate 126. Communication about the delay was bad. Ended up being 1 1/2 hour late getting home.

Flight was delayed due to plane not passing inspection And one of the crew had to time out and we had to wait for another one A 3 hour delay

It was one and half hour late... Not sure if any other experience matters.

Flight crew and cabin crew were great. I had to rearrange flights because my original flight was 3hrs delayed for weather, the rub is the flight I moved to boarded on time then we sat at the gate for 2 hours because scheduling stole our first officer for another flight, TWICE. Then our actual FO was an hour delayed. To make it worse my original flight went from a 3 hour delay to departing 15min EARLY. Just poor scheduling operations all around.

It was 2 hours 45 minutes late, for no apparently clear reason.

Excellent. The lady boarding the flight was awesome. Very efficient, and she got everyone on line.

Planes never have enough leg room for someone my height so my knees were cramped and therefore started aching. Also, the Wi-Fi was down so I couldn't watch anything on my phone like I anticipated.

Two hour delay including one of them on the tarmac second year in a row we’ve had a bad experience. Sad that Southwest is no longer a bargain and has failed to keep up the customer service they were once so famous for.

I liked receiving attention from aged and well experienced flight attendants. I disliked the non-gluten-free snack but I brought my own so I was OK.

We departed early and made up time in the air allowing us to arrive 30 minutes early. Capt was incredibly genuine and thanked every passenger for flying with Delta. Completely humble and professional!

The boarding process needs to be refined. Sometimes the gate crew calls out the zones and then flip to showing the.zones boarding on the gate monitor display. So, unless you are huddled around the gate lanes watching the monitor, you could miss your boarding zone. Suggest the zones be announced each time a new zone is allowed to board.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

It was a great flight and the stewards and stewardess were all kind and accommodating!! The seats were comfortable and entertainment screen excellent!

737-800 in first class was pretty dumpy. Seat had an uncomfortable angle, storage under the seat was blocked so even my very modest backpack didn't fit, power outlet was flaky. Weird tiny seat pockets that couldn't hold a gallon ziploc bag, emesis bag missing, etc. etc. No in-flight service due to turbulence. Crew was excellent, boarding was smooth despite a full flight.

On 2 different flights the wifi was horrible and there was no drink or snack service.

Great, on time departure, friendly and accommodating crew, great leg room, Smith flight

The flight was overbooked and the staff at the gate started calling for volunteers to drop out and offering incentives. That delayed the flight

There was no wifi even after my husband paid for wifi it wasn’t working. The plane looked and felt old.

Update the cabin with tv screens or at least music sources.

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.

Flight was 3 hours delayed. They gave our plan to two other routes. Need to knock that off.

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

Small plane, poor meal choices for first class, bad terminal and boarding experience at LAX

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

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!

I had a TERRIBLE experience with the AA crew. I believe it was disability-related. It’s unlikely I will fly AA again.

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.

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.

Pros: "The flight crew were very nice. I needed help boarding and departing, and they were there every step of the way."
Cons: "Not very much room, no alcoholic drinks available, couldn’t connect to WiFi for inflight movie."

They didn’t offer a water, even after I asked

The takeoff was the smoothest I've ever experienced on any airline and this is the first time I've flown on frontier so this was an extremely pleasant surprise!

A lady asked to stop the flight after the tunnel pulled away and we began to depart a flight that was already hours late. The attendance respectfully stopped the the plane and had the tunnel return. After the tunnel returned the passenger claimed to have changed her mind . The tunnel was then put in reverse and the passenger remained on the plane .. They should have sent the sick passenger off the plane like initially replaced. They existed a couple off the plane prior to that situation.. So.. all and all.. it was a long and flight.. .

We understand and comply with Frontier’s bag sizes. We’ve had some problems in past while having to await other passengers who do not understand the baggage restrictions or have not prepaid and that is usually our biggest concern (others delaying us) with flying Frontier. Flying OUT of ONT, however, has always been a great experience. I’ve also noted even on delayed Frontier flights very knowledgeable pilots who manage expectations well.

Long lines, rude staff, everything that's offered you have to pay for.

The last time I flew Frontier was in the 1960s when it was a “real” airline. We flew this time because of the price & schedule. As the saying goes, you get what you pay for.

I appreciated the upgrade to free cary-on bag and seat selection at no charge

Flight was delayed on the runway for 40 minutes the crew did not even offer even water to passengers to compensate for the flight delayed. The flight was delayed due to aircraft mechanical issues. Worst customer service ever

This isna terribly run airlines. If you're one minute late, they will deny your ticket. Don't waste your time or money

Flight was delayed for more than 3 hours, crew at ONT airport was rude, and when we got to DFW the airplane had an issue landing, we had to be taxied to the terminal, and the luggage was hold until the next day.

Everything you need to know for your flight from Ontario to Kansas City

Information on your arrival and departure airports