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MCI - ONT

Find cheap flights from Kansas City to Ontario from $69

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Kansas City to Ontario departing on 4/16. 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
0 bags
Sat 4/27
Sat 5/4

Search hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Kansas City to Ontario, 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 Kansas City to Ontario, as well as popular online travel agencies
In the last 7 days travelers have searched 46,342,885 times on KAYAK, and here is why:

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Cheap flight deals from Kansas City to Ontario

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Kansas City to Ontario 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 and deals for you by selecting your travel dates.
Choose your dates
7:07 pm - 11:56 pmMCI-ONT
6h 49m1 stop
12:59 am - 9:14 amONT-MCI
6h 15m1 stop
$90Frontier
Find Deal
Thu, May 2 - Mon, May 6
7:07 pm - 11:56 pmMCI-ONT
6h 49m1 stop
7:26 am - 9:24 amONT-MCI
23h 58m1 stop
$104Frontier
Find Deal
Thu, May 2 - Sat, May 4
9:10 am - 9:57 pmMCI-ONT
14h 47m1 stop
12:59 am - 9:14 amONT-MCI
6h 15m1 stop
Tue, Apr 30 - Mon, May 6
7:50 am - 12:26 pmMCI-ONT
6h 36m1 stop
12:59 am - 9:14 amONT-MCI
6h 15m1 stop
Sat, May 4 - Mon, May 6
6:00 am - 11:22 amMCI-ONT
7h 22m1 stop
5:19 pm - 12:45 amONT-MCI
5h 26m1 stop
$298Delta
Find Deal
Tue, Apr 16 - Wed, Apr 17
6:00 am - 1:12 pmMCI-ONT
9h 12m1 stop
5:19 pm - 12:46 amONT-MCI
5h 27m1 stop
$328Delta
Find Deal
Tue, Apr 30 - Sun, May 5
6:59 pm - 9:56 pmMCI-ONT
4h 57m1 stop
12:53 pm - 10:47 pmONT-MCI
7h 54m2 stops
$366American Airlines
Find Deal
Sat, May 4 - Wed, May 8
5:07 pm - 8:40 pmMCI-ONT
5h 33m1 stop
10:45 am - 10:06 pmONT-MCI
9h 21m1 stop
$378United Airlines
Find Deal
Wed, Apr 17 - Sat, Apr 20
6:05 am - 11:04 pmMCI-ONT
18h 59m2 stops
5:15 am - 12:41 pmONT-MCI
5h 26m1 stop
$412United Airlines
Find Deal
Fri, May 3 - Sat, May 4
12:38 pm - 9:56 pmMCI-ONT
11h 18m2 stops
12:53 pm - 10:47 pmONT-MCI
7h 54m2 stops
$434American Airlines
Find Deal
Sat, May 4 - Wed, May 8

Flights from Kansas City to Ontario - Travel Insights & Trends

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

The average price of all flights from Kansas City to Ontario clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to Ontario on a Tuesday and more expensive on a Saturday. On your return trip to Kansas City, you should consider flying back on a Thursday, and avoid Mondays for better deals.

Which airlines provide the cheapest flights from Kansas City to Ontario?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 3 days, Frontier offered the best one-way deal for that route, at $69. KAYAK users also found Kansas City to Ontario round-trip flights on Frontier from $90 and on Delta from $298.

How long does a flight from Kansas City to Ontario take?

This flight route requires at least one stop and takes a minimum of 4h 45m.

Good to know

Low season

September

High season

May

Cheapest flight

$69
Best time to beat the crowds with an average 31% drop in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from Kansas City to Ontario

When to book flights from Kansas City to Ontario

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

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

    In the last 3 days, the lowest price for a flight from Kansas City to Ontario was $69 for a one-way ticket and $90 for a round-trip.

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

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

  • Which airports will I be using when flying from Kansas City to Ontario?

    Kansas City and Ontario are both served by 1 main airport. You will leave Kansas City from Kansas City and will be arriving at Ontario.

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Kansas City to Ontario are Delta and United Airlines. With an average price for the route of $397 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $526 and an overall rating of 7.4.

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

    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 Kansas City to Ontario.

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

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

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

    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 Ontario from Kansas City up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 5 airlines serving from Kansas City to Ontario

Need help choosing which airline to fly with from Kansas City to Ontario? 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 KAYAK reviews.
8.0
DeltaOverall score based on 11402 reviews
86crew
80entertainment
81overall
79comfort
75food
82boarding
Airline reviews

I didn’t like that I could not select my seat and was assigned a seat when I checked in at LAX

Read more about Delta

I didn’t like that I could not select my seat and was assigned a seat when I checked in at LAX

Great experience overall. Check in at Austin was congested as they only have about 6 check in kiosks, one was broken, and there was a lot of Spring Break travelers.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Everything was very good other than I had selected a specific seat when I booked the flight and they changed it once I checked-in the day before my flight. I was still in first class but lost my aisle seat for a window seat. Being tall, the aisle offers more comfort so I always select an aisle seat.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Crew was not friendly when I went to request a seat change.

Really impressive staff at airport and on plane, especially given how busy it was

Was a great smooth flight from Detroit to San Diego.

The boarding process was terrible especially with an indirect flight Chicago to Seattle to San Diego was terrible talking about we overbooked a flight idk if I’d take this airline ever again we got off our flight from Chicago to Seattle and we traveled for business and they told us our connecting flight was over booked and their was no seats asking people to take a delayed next flight and they don’t tell anyone coughing to wear masks seats 30A-B were terrible during the flight no one wants to sit next to people coughing all around I don’t want to be sick traveling for work or get sick anytime it’s very upsetting the staff doesn’t take this stuff serious to tell them to wear masks when they see people coughing and sneezing

Crew was great. However the seat I had would not recline and stay put. It would spring back to upright. Hopefully they can check the seats and maintain them. Otherwise the plane is clean and the crew is very friendly.

For a 22 minute flight all you expect is for it to be safe and comfortable

I was not able to buy food in the flight. They refer to include your Credit card in the APP, and if you are not from USA (i have a credit card form Canada) it is not possible

Over two hours wait to get wheelchair assistance from arrival to the departure gate for LA was unreasonable even though there appreared to be heavy demand.

Airline did not explain reasons why flight was delayed two hours. Explanations were badly needed and rarely provided. Problem seemed to clearly be the airline’s fault and not the fault of the weather or airport.

I was delighted that we were able to get on the 4:40 pm flight rather than our original booking at 6:55 pm!! Other than that, the flight was comfortable and landed early😊

The flight and crew were fine. The entertainment- the sound was so bad through the headphones I could barely understand it and it was a show I had seen before. The food might have been fine but having to have an account with united in order to access the app in order to pay for the food was rage inducing. I had entered my credit card info at home and logged in as guest but that wouldn’t allow the “wallet” tab to open in the app. And then the wifi was so bad that it took about 45 minutes to fully log in and get all the info working at which time I missed the food. You shouldn’t have to give your address, email and phone number in order to get a hamburger.

The control panel for the seat back screen did not work at all after takeoff.

United airline kept delaying our flight back to Phoenix for 8 hours before they cancelled it! If they know that we are not flying out for whatever the reason is, why did they keep lying to us for hours. We could find another flight earlier or even find a hotel with a shuttle. But cancellation at about midnight was not fun. We stayed in the airport all night till the following morning when we bought an Alaska tickets to go back to Phoenix. Total of 14 hours in the airport.

Poor seating comfort, seat cushion too thin, very uncomfortable. My luggage didi not make the flight due to equipment change. At least. United had it delivered the next day. I was without my toilet items for one day.

The crew was nice but the people going to Orange County are so entitled. Everyone thinks everything is suppose for be perfect for them. Tough crowd.

Plane was good but was delayed. probably not AA fault but caused a 1 hour delay. Seating was cramped.

5 hour flight - full flight - not enough room to use my computer - slightly delayed - Admirals club was excellent quality food, drink made up for flight seating. No food offerred on flight, you ahd to prebook.

We experience delays on departure and connecting flights resulting in 14 hour to our next departure. We were accommodated with a night's stay but was only provided a 12 dollar meals accommodation. The airlines rules state.at least 50 dollars. In any case, it can not make up for the whole day missed on our vacation in Sydney Australia.

I can say I will not be taking this airline again any time soon. Seat were uncomfortable and too tight. Lack of chair screen and little overhead space.

Plane felt so crowded and tightly packed. The chair itself was not comfortable.

They attended to my needs as I couldn't walk and they provided a wheelchair for me.q

Poor availability of food. Cold cabin temperature. Extremely long waiting time for a flight attendant to respond to a call button signal.

2.5h delay due to unruly passenger in first class. Had to be removed from the flight. No food unless pre ordered. Didn't know we would need it because of delay.

This time my flight was smooth and uneventful. They started boarding even earlier than it was scheduled. I was pleasantly surprised. Thank you!

Only my carry that was taken and found it in my final destination

The text told me it was changed to Terminal E and Gate D5. But with no one on site to ask questions there was confusion on where to go as all the gates were E's. Then we took the skyline to the D area. We left to get something to eat. No announcement was made but my daughter happened to asked and they told her our gate was moved to D12. I will not fly Spirit again.

The agent at the check in desk was absolutely rude. The rest of the team after that was good, but the check in process at LAS was miserable. The woman at the desk spoke like we were stupid and was rude throughout the process.

Its so random that they only allow 40 pounds on checked bags when all airlines take 55. They then charge you for each 10 extra pounds, so my checked suitcase was $130 and the flight $30 ... its like whattt, im for sure not traveling with Spirit again

So bad. The check in process was laborious and the check in agent didn't seem to know how to manage the process efficiently and was confused about how to check in my son's sports equipment. The baggage fees were outrageous and so expensive. $90 for a carry on bag? And $200 additional for 2 check ins. The security lines were insanely long and the terminal was not very nice in the Spirit area. $5 for a water on board. It was my first and last time flying Spirit - I tried to save $ by flying them due to the accommodating schedule but I should have paid for Southwest, because it would've actually ended up less expensive due to the free bags with Southwest. There were no charging ports on the airplane, no wifi and really uncomfortable seating. The flight crew were great though, courteous and efficient in their boarding. Flight was delayed 1 hour, but we made up 15 minutes in flight.

My experience was better than expected. What I did find not so great was the seats. Very little room, they did not recline and the tray table was the size of a post card. There was no food to try, just standard snacks that you had to pay for and I don’t know of any entertainment. I would fly again even though everything was an upcharge. Flight was on time with little disturbance

thy don't even ofer water we have to buy it for $4.49 and paid for our cary on bags $100 each we never will fly in this company again.

Super cool and laid back, three lovely ladies. Couldn’t ask for better service.

It was fine. Boarding was a little rude. On flight staff was great. The cost to purchase everything was a bit annoying but I get that's the business model.

I liked the fast check in and boarding. The flight fare could be a lot less than what I paid…..

Minimalist interiors are great for legroom but terrible for comfort.

See my previous comment which is mostly about our flight from Phoenix to SFO

The check in at the airport was awful. Told I need to pay for a bag. The item was taken at screening. I went back to get my $ back and they gave me a coupon with a QR code that doesn’t work. Worst costumer service ever!!!!!

4 hour delay because they used our aircraft to fly a different segment (per the captain)

Lost baggage on my connecting flight. 24 hours later, still no update on my bags.

I have come to accept Frontier as an absolute no-frills airline, paying for everything I want. A 4.5-hour flight should provide me with a complimentary beverage—rather, $4.9x for a soda. Or a bottle of water ought to be extended at no cost. 4 beers are on the menu, but only 1 type of beer is available (at $9.95). Also, so many restrictions to using a voucher from Barclay‘s Credit Card. Finally, try to reach a live agent for Frontier- impossible!

I had to cancel within 1hour of the reservation an they put you through hell to . no live customer service desk. I'm handy caped and they make it almost impossible to cancel. They are steeling my money. You should not have that airline on your site. Contact me and I will give you all info. Of what the are doing to me just notable treatment they are set up like that to take people

absolutely horrific. delayed flights, overbooking. over charging. nightmare service beyond words. stay away.

My husband didn't get boarded on this flight. He was asked to pay $50 extra by the Frontier staff to get two boarding passes for check-in at the Las Vegas airport. He refused to pay this extra $50 charge and tried to do check-in online by himself but it seemed to be late with only 7 mins left. It ended up that my daughter and my husband missed the 7-minute time window. They had to take the next non-direct flight which took more than 12 hours from Las Vegas to San Francisco, a very poor experience for them.

Frontier is a no-frills airlines were the focus is low cost. You get basic service so don't set your expectations high. Watch out thought because this airline, like a few others, will try to nickel and dime you.

Was charged 99 dollars for a bag despite agents previously telling me it would be ok. Customer service was unhelpful

Book cheap flights from Kansas City to Ontario

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Kansas City to Ontario found on KAYAK in the last 72 hours.
4/16Tue
1 stopFrontier
6h 52mMCI-ONT
$69
5/17Fri
1 stopFrontier
13h 49mMCI-ONT
$73
5/17Fri
3 stops
20h 58mMCI-ONT
$165
3/31Sun
2 stops
29h 23mMCI-ONT
$188
5/4Sat
1 stopUnited Airlines
5h 24mMCI-ONT
$189
5/25Sat
1 stopUnited Airlines
16h 23mMCI-ONT
$259
4/15Mon
1 stopDelta
7h 47mMCI-ONT
$284
4/10Wed
1 stopDelta
9h 12mMCI-ONT
$304
5/5Sun
2 stopsAmerican Airlines
8h 50mMCI-ONT
$340
4/7Sun
2 stopsAmerican Airlines
7h 40mMCI-ONT
$431

Search by stops

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Last minute flights from Kansas City to Ontario

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Kansas City to Ontario that are departing in the next 10 days.
4/2Tue
multi-stopFrontier
11h 57mMCI-ONT
4/8Mon
multi-stopFrontier
5h 34mONT-MCI
$147
4/1Mon
multi-stopFrontier
15h 22mMCI-ONT
5/4Sat
multi-stopFrontier
23h 58mONT-MCI
$222
3/30Sat
multi-stopFrontier
7h 54mMCI-ONT
4/1Mon
multi-stopFrontier
6h 48mONT-MCI
$332
3/31Sun
multi-stopFrontier
11h 57mMCI-ONT
4/1Mon
multi-stopFrontier
5h 36mONT-MCI
$398
3/29Fri
multi-stopFrontier
11h 57mMCI-ONT
4/1Mon
multi-stopFrontier
23h 08mONT-MCI
$416
3/29Fri
multi-stopFrontier
28h 29mMCI-ONT
3/31Sun
multi-stopFrontier
13h 16mONT-MCI
$485
3/29Fri
multi-stopUnited Airlines
5h 17mMCI-ONT
3/31Sun
multi-stopUnited Airlines
5h 04mONT-MCI
$782
3/31Sun
multi-stopUnited Airlines
5h 24mMCI-ONT
4/2Tue
multi-stopUnited Airlines
5h 26mONT-MCI
$1,044
3/29Fri
multi-stopAlaska Airlines
16h 52mMCI-ONT
3/31Sun
multi-stopAlaska Airlines
11h 18mONT-MCI
$1,362
3/29Fri
multi-stopAmerican Airlines
7h 04mMCI-ONT
3/30Sat
multi-stopAmerican Airlines
5h 48mONT-MCI
$1,686

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Kansas City - Ontario Flights

Departure:

Kansas City (MCI)United States

Destination:

Ontario (ONT)United States

Return flight deals:

Ontario - Kansas City

Cabin classes: