ONT - MCI

$102 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 9/29. 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

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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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

Thu, Sep 4 - Mon, Sep 8
Alaska Airlines Logo
3:06 pm - 11:59 pmONT-MCI
6h 53m1 stop
Alaska Airlines Logo
4:55 pm - 11:54 pmMCI-ONT
8h 59m1 stop
$204Alaska Airlines
Find Deal
Tue, Jul 29 - Wed, Aug 6
Frontier Logo
12:59 am - 6:23 pmONT-MCI
15h 24m1 stop
Frontier Logo
7:20 pm - 11:50 pmMCI-ONT
6h 30m1 stop
$205Frontier
Find Deal
Thu, Oct 23 - Sat, Oct 25
Hawaiian Airlines Logo
7:10 am - 4:22 pmONT-MCI
7h 12m1 stop
Hawaiian Airlines Logo
5:57 pm - 11:49 pmMCI-ONT
7h 52m1 stop
$246Hawaiian Airlines
Find Deal
Mon, Jul 28 - Tue, Aug 5
American Airlines Logo
12:59 am - 8:57 amONT-MCI
5h 58m1 stop
American Airlines Logo
5:49 pm - 11:54 pmMCI-ONT
8h 05m1 stop
$247American Airlines
Find Deal
Thu, Aug 7 - Sun, Aug 10
Southwest Logo
2:15 pm - 10:40 pmONT-MCI
6h 25m2 stops
Southwest Logo
8:20 pm - 11:25 pmMCI-ONT
5h 05m1 stop
$252Southwest
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Fri, Aug 1 - Mon, Aug 4
Delta Logo
5:09 pm - 12:21 amONT-MCI
5h 12m1 stop
Delta Logo
6:04 pm - 11:42 pmMCI-ONT
7h 38m1 stop
$273Delta
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Fri, Aug 22 - Sun, Aug 24
Hawaiian Airlines Logo
7:10 am - 4:01 pmONT-MCI
6h 51m1 stop
Hawaiian Airlines Logo
4:55 pm - 11:53 pmMCI-ONT
8h 58m1 stop
$288Hawaiian Airlines
Find Deal
Thu, Jul 31 - Sun, Aug 3
Delta Logo
5:09 pm - 12:21 amONT-MCI
5h 12m1 stop
Delta Logo
6:40 am - 12:14 pmMCI-ONT
7h 34m1 stop
$289Delta
Find Deal
Tue, Jul 29 - Tue, Aug 5
Southwest Logo
9:40 am - 8:40 pmONT-MCI
9h 00m2 stops
Southwest Logo
5:05 pm - 10:05 pmMCI-ONT
7h 00m1 stop
$292Southwest
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Sun, Aug 3 - Sat, Aug 9
American Airlines Logo
12:59 am - 9:53 amONT-MCI
6h 54m1 stop
American Airlines Logo
9:28 am - 1:39 pmMCI-ONT
6h 11m1 stop
$324American Airlines
Find Deal
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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.

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

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

If you are looking for a flight deal from Ontario to Kansas City, look for departures on Fridays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Kansas City, Wednesday is the cheapest day to fly and Saturday is the most expensive.

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 September, where tickets cost $331 (return) on average. On the other hand, the most expensive months are June and May, where the average cost of round-trip tickets is $512 and $482 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 5 weeks before departure. For the absolute cheapest price, our data suggests you should book 18 weeks before departure.

Good to know

Low seasonJanuary
High seasonOctober
Cheapest flight$102
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly and prices are also 3% lower on average.
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 3 days, the lowest price for a flight from Ontario to Kansas City was $102 for a one-way ticket and $204 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?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Ontario and Kansas City, with oneworld 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 $450 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $351 and an overall rating of 8.0.

  • 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 5 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.
8.0
SouthwestOverall score based on 4275 reviews
8.0Comfort
7.6Entertainment
7.0Food
8.2Boarding
8.6Crew
Airline reviews

Delayed flight. Nicest crew member was a SW pilot flying seated next to me who kindly move to seat the final passenger. Flight extra delayed. My cup of refreshment of ginger ale was so packed with ice it was literally 2 sips.

4.0 OkayTraci, Jun 2025OAK - SEA
Read more Southwest reviews

Delayed flight. Nicest crew member was a SW pilot flying seated next to me who kindly move to seat the final passenger. Flight extra delayed. My cup of refreshment of ginger ale was so packed with ice it was literally 2 sips.

For my birthday trip this was my second time ever flying, this trip was the best.

No trays in our seats, we sat in first row, purchased a business class fare. Had to hold our drinks and snack in our hands. No plugs for our cell phones. Had to pay for it a drink cocktail each. Seats so uncomfortable.

Flight wasn’t even full, but too many carry-ons caused us to run out of bin space. New bag fee has folks who would usually check their bags carrying on. Watching Southwest morph into Spirit/Frontier is so sad to watch

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

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 a perfect flight in all aspects! Both legs!

Great flight, 47 passengers on a 180 seat plane. Stewardess was pleasant and cheerful.

I liked the crew member who gave flight instructions on "in case of a problem:. The seats are so small that only a young teenager could sit in middle seat.

Great flight staff. Ease of boarding. Overall, very uneventful and easy trip.

Crew was excellent. Comfort seats not as nice as other kinds of planes.

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

There are 4 flights in consecutive gates with about the same departure time. Two flights were boarding at the same time. One was delayed or boarding would be happening at the same time. I am not sure what Delta and LAX need to do to have a better layout at the end of Terminal 2

There was a security issue at the airport and we were unable to land. We circled endlessly and then landed at another airfield for fuel. We then circled the airport again, almost landed but didn’t fully touch down before circling again. I am thankful to the crew for keeping us safe- the issue was the airline and staff at the airport getting us seats on our connecting flights. That part was hours of searching for someone and getting in double my steps.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

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.

Delta flight was on time, seats were comfortable, and crew was nice.

Thank you for not flipping the plane on the run way. You guys get a 5 star rating for the flight!!!

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

Very comfortable (upgraded to business class). The audio on my screen didn’t work, but I managed to play the audio through my phone while watching the screen.

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Boarding seemed to be organized bedlam. For what ever reason, preboarding took longer than 20 minutes. Made the plane 20 minutes late taking off. Luckily we arrived on time. Flight crew seemed very friendly. Only slight turbulence.

The personnel were professional and friendly. The Boeing 737 Max 9 is too claustrophobic and was very warm at both airport gates, and still warm in the air.

While the staff was pleasant and helpful, the following observations are for your awareness. There was some delay on the tarmac on take off and landing. The paid lunch/food offerings were limited. Entertainment was only available on WiFi at a cost.

get E+, a must for 5 hours flight if you are tall

The first flight was better in terms of the aircraft.

Almost a 6 hour flight and the only food option is a cheese plate… and chips. Also how is it there are no options for texting on American. I’ll be going back to delta and united.

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!

Cramped seats. FAA should make airlines have more legroom, for even short people complain

Eventless. It was a good flight and good crew. Can’t complaint.

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

The plane was late and then sat on the runway for almost 45 minutes before taking off.

We kept being told that the flight was full and that all overhead compartments were full and therefore had to check in our hand luggage. We were some of the last people to board and noticed that there was still sufficient space in the overhead compartments. We were obliged to check in hand luggage when there was space and so had to wait at luggage retrieval which took a while to then noticed damage to our luggage - not a great experience!

This was an overnight flight. There was no meal service in first class, just a simple snack basket was offered along with beverages. There should have been some type of continental breakfast prior to arrival in PHL. As an Executive Platinum American Airlines Advantage member, I received no name recognition from the first class flight attendant. When disembarking at PHL, the flight attendants were more interested in their cell phones than saying "thank you" to the passengers as they disembarked.

The flight was quick and to the point. The crew just did their job w/o excessive talking and everything was just perfect.

Awkward carry on process. Forced to check all carry on. No overhead space of worthiness. Left delayed, but made up the time. Crew was amicable.

Cancelled flight after I arrived at airport after 75 min drive and parking. Next flight was 4 days in the future. Had to scramble and buy a much more expensive flight on another carrier.

I liked the turn-style feature at gate 209B at LAX. Very efficient process. The gate staff also made several, clearly directed announcements so I felt very informed.

The seats were awful, hard plastic covered in sheet vinyl. The airline tries to scam you into paying extra to get seat together when the flight wasn’t full. They were going to separate a family with young children but my wife who had a row to herself gave up her seat so the young mom could be with her young boys. I’m never giving this airline my money again.

It was a short flight so no food or entertainment….

Frontier had yet another flight cancellation. Have never made a complete round trip with this airline without at least one leg getting cancelled. Miserable flights - dirty, uncomfortable planes that apparently always have issues since I've had multiple delays and cancellations with them.

Flight was delayed 3 times, would have been nice to have received text message instead of email notifications. Frontier app wasn’t even updated accordingly, no gate number disclosed. No agent at front desk of gate to inform of delay. Very confused and left if the dark

They changed the timing , first delayed by 4 hours then went back to 40 mins late, we had to run back to airport to not miss our flight. This is ridiculous

No frills for sure. No gate announcements about flight delay, not even water to drink on the flight.

I loked walking out on the tarmac to board and no first class. I didn't like that they have no snacks or onboard wifi to bide your time.

It was a redeye flight, so every passenger just wanted to sleep, but through the entire flight, the flight crew made announcements over the loudspeaker at maximum volume every few minutes making sleep impossible. For example: it’s 2am, and the crew decides to give an extremely detailed announcement about snacks and beverages for sale. And 3am is the perfect time to wake up everyone with a lengthy announcement about how to get a coffee refill and how to take advantage of new offer from frontier for a credit card.

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