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MCI - ONT

$80 Find cheap flights from Kansas City to Ontario

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 6/4. 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
Sun 5/26
Sun 6/2

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 44,738,066 times on KAYAK, and here is why:

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Cheap flight deals from Kansas City to Ontario (MCI-ONT)

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
7:44 pm - 11:59 pmMCI-ONT
6h 15m1 stop
12:59 am - 8:15 amONT-MCI
5h 16m1 stop
$100Frontier
Find Deal
Fri, May 17 - Mon, May 20
7:44 pm - 11:59 pmMCI-ONT
6h 15m1 stop
2:35 pm - 8:15 amONT-MCI
15h 40m1 stop
$106Frontier
Find Deal
Fri, May 17 - Wed, May 22
5:50 am - 12:13 pmMCI-ONT
8h 23m1 stop
5:20 pm - 12:24 amONT-MCI
5h 04m1 stop
$277Delta
Find Deal
Tue, May 21 - Tue, May 21
6:14 pm - 11:43 pmMCI-ONT
7h 29m1 stop
2:13 pm - 11:35 pmONT-MCI
7h 22m1 stop
$278Delta
Find Deal
Mon, May 20 - Wed, May 22
6:52 pm - 12:27 amMCI-ONT
7h 35m1 stop
12:53 pm - 10:47 pmONT-MCI
7h 54m2 stops
$312American Airlines
Find Deal
Thu, May 23 - Thu, May 30
2:15 pm - 6:17 pmMCI-ONT
6h 02m1 stop
12:40 pm - 10:19 pmONT-MCI
7h 39m2 stops
$332American Airlines
Find Deal
Tue, Aug 6 - Tue, Aug 13
5:25 pm - 8:48 pmMCI-ONT
5h 23m1 stop
1:55 pm - 12:35 amONT-MCI
8h 40m1 stop
$338United Airlines
Find Deal
Wed, May 29 - Wed, Jun 5
5:07 pm - 8:53 pmMCI-ONT
5h 46m1 stop
1:36 pm - 8:40 pmONT-MCI
5h 04m1 stop
$376United Airlines
Find Deal
Sat, May 18 - Tue, May 21
2:42 pm - 9:28 pmMCI-ONT
8h 46m1 stop
8:09 pm - 7:04 pmONT-MCI
20h 55m1 stop
$436Alaska Airlines
Find Deal
Sat, May 11 - Fri, May 17
7:59 pm - 9:05 amMCI-ONT
15h 06m1 stop
8:09 pm - 11:59 pmONT-MCI
25h 50m1 stop
$452Alaska Airlines
Find Deal
Sat, May 18 - Tue, May 21

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 Friday, and avoid Saturdays 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 $80. KAYAK users also found Kansas City to Ontario round-trip flights on Frontier from $100 and on Delta from $277.

Good to know

Low season

September

High season

May

Cheapest flight

$80
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 $80 for a one-way ticket and $100 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, SkyTeam, and Star Alliance 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 $542 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

 
See real verified KAYAK customer reviews for airlines flying from Kansas City to Ontario. 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 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 verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10966 reviews
7.9comfort
8.0entertainment
8.6crew
8.2boarding
7.4food
Airline reviews

I always fly with Delta. My friends tell me their horror stories of flying with other airlines. I just smile and say, “You should fly Delta”

10.0 ExcellentAnonymous, Apr 2024MCI - ATL
Read more about Delta reviews

I always fly with Delta. My friends tell me their horror stories of flying with other airlines. I just smile and say, “You should fly Delta”

There was a loud squeaky sound the whole time we were flying.

Had a broken tray in business class. Crew just shrugged it off.

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

So so. Terrible aircraft choice for that leg of the flight.

delay several times and wait extra long to board. no entertainment service because there are problem for some rows. always encounter some delays for the last flight of the day.

On time every leg of the journey and exceptional staff at counter, gate, and on board. I haven’t travelled in US for a long time and was genuinely surprised how pleasant this was.

This was a Lufthansa flight. Disappointing main meal. Very rough over Canada and arrival at FRA. IFE was almost unusable.

Too many fees (but that seems to apply to all airlines nowadays)

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😊

Fight crew was not very attentive and the bastions were gross!

Our flight was great we left Kona earlier and got into LAX almost an 1hour earlier as well. LAX AA is in repair so to get out and found our bus to get pick up was a bit confusing.

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.

They charged me 212.00 for a heavy check in bag at the gate. The pricing and process was so confusing - as if it was designed to purposefully gouge customers who need to board plane. That experience combined with the outrageous price charged will prevent me from ever flying Spirit again. And I’ll be sure to tell the story to anyone who cares to hear.

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…..

I purchased a carry on bag online…was supposed to cost $72 but after a whole slew of bs charges, the total was over $175.00. Because of these hidden charges, I will not even consider flying Frontier ever again. It’s just not worth the hassle. I’m scratching this company off my list forever.

Flight was OK. Seats were good no cell phone charges on the plane no TVs or entertainment.

There were 3 leg for the trip and each leg was delayed by 90 minutes or more. The boarding process takes forever with people waiting on the jetway even though most folks do not have carry-on. The whole process is poorly managed.

Flight cancelled and was told by a rude gate agent that they don’t accommodate on other airlines. Had to wait 5 hours for a connecting flight that had a 7 hour layover. Would not allow bags to be checked early so we couldn’t go through security .Had to rent a car for the afternoon to store bags and get a meal. Also incurred a hotel fee. No apology or reason given for the cancellation- just rudeness.

They cancelled the flight then did nothing to help us rebook. It was awful - I won’t fly with them again

The process of buying the ticket and navigating all the hidden charges that Frontier throws at you was a terrible experience. The actual airport experience and flying was fine.

The truck that was refueling the plane drove away with the hose still connected to the plane and ripped part of the plane off with it

The boarding time. I was in Section 1 the lady in charge just let people in section 3 without see us. Make a line , I have to step out and ask her. We were in the line and she just take my ticket and that’s it, so if I don’t ask her she could leave us at the end! We paid more for that privilege and. She doesn’t care….

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!!!!!

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.
6/4Tue
1 stopFrontier
6h 15mMCI-ONT
$80
5/7Tue
1 stopFrontier
6h 52mMCI-ONT
$89
5/29Wed
1 stopAmerican Airlines
5h 37mMCI-ONT
$129
7/15Mon
1 stopAmerican Airlines
6h 00mMCI-ONT
$178
5/16Thu
1 stopSouthwest
11h 05mMCI-ONT
$183
5/16Thu
1 stopDelta
7h 29mMCI-ONT
$186
5/16Thu
2 stopsSouthwest
13h 05mMCI-ONT
$196
5/8Wed
1 stopUnited Airlines
5h 46mMCI-ONT
$235
5/29Wed
2 stopsUnited Airlines
18h 14mMCI-ONT
$247
5/6Mon
1 stopDelta
9h 53mMCI-ONT
$316

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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.
4/30Tue
multi-stopFrontier
6h 52mMCI-ONT
5/6Mon
multi-stopFrontier
6h 15mONT-MCI
$197
4/30Tue
multi-stopFrontier
6h 52mMCI-ONT
5/6Mon
multi-stopFrontier
6h 15mONT-MCI
$198
4/30Tue
multi-stopUnited Airlines
13h 24mMCI-ONT
5/1Wed
multi-stopUnited Airlines
8h 56mONT-MCI
$606
4/30Tue
multi-stopUnited Airlines
11h 18mMCI-ONT
5/1Wed
multi-stopUnited Airlines
8h 56mONT-MCI
$611
4/30Tue
multi-stopDelta
7h 22mMCI-ONT
4/30Tue
multi-stopDelta
5h 26mONT-MCI
$656
4/27Sat
multi-stopDelta
8h 27mMCI-ONT
4/29Mon
multi-stopDelta
5h 26mONT-MCI
$677
4/28Sun
multi-stopAmerican Airlines
10h 18mMCI-ONT
5/1Wed
multi-stopAmerican Airlines
10h 45mONT-MCI
$680
4/28Sun
multi-stopAmerican Airlines
9h 53mMCI-ONT
5/1Wed
multi-stopAmerican Airlines
10h 45mONT-MCI
$687
4/27Sat
multi-stopAlaska Airlines
8h 46mMCI-ONT
5/2Thu
multi-stopAlaska Airlines
11h 30mONT-MCI
$789
4/30Tue
multi-stopAlaska Airlines
8h 46mMCI-ONT
5/3Fri
multi-stopAlaska Airlines
15h 59mONT-MCI
$939

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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: