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MCI - ONT

$68 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 8/13. 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
Wed 7/10
Wed 7/17

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 42,898,604 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
7:45 pm - 11:39 pmMCI-ONT
5h 54m1 stop
12:49 am - 8:40 amONT-MCI
5h 51m1 stop
$140Frontier
Find Deal
Tue, Aug 13 - Tue, Aug 20
7:45 pm - 11:44 pmMCI-ONT
5h 59m1 stop
12:49 am - 8:40 amONT-MCI
5h 51m1 stop
$143Frontier
Find Deal
Sat, Aug 31 - Mon, Sep 2
5:50 am - 12:17 pmMCI-ONT
8h 27m1 stop
5:35 am - 1:26 pmONT-MCI
5h 51m1 stop
$287Delta
Find Deal
Tue, Jun 25 - Tue, Jul 2
6:21 pm - 11:59 pmMCI-ONT
7h 38m1 stop
6:00 am - 1:26 pmONT-MCI
5h 26m1 stop
$296Delta
Find Deal
Wed, Jul 17 - Wed, Jul 24
12:29 pm - 10:09 pmMCI-ONT
11h 40m1 stop
9:41 am - 9:05 pmONT-MCI
9h 24m2 stops
$301American Airlines
Find Deal
Wed, Sep 4 - Wed, Sep 11
8:02 pm - 11:58 pmMCI-ONT
5h 56m1 stop
6:40 am - 4:11 pmONT-MCI
7h 31m2 stops
$321American Airlines
Find Deal
Mon, Aug 12 - Sat, Aug 17
6:00 am - 11:03 amMCI-ONT
7h 03m1 stop
1:35 pm - 11:35 pmONT-MCI
8h 00m1 stop
$372United Airlines
Find Deal
Thu, Jun 27 - Tue, Jul 2
4:17 pm - 10:56 pmMCI-ONT
8h 39m1 stop
5:45 am - 12:52 pmONT-MCI
5h 07m1 stop
$381United Airlines
Find Deal
Tue, Oct 15 - Tue, Jan 28
4:16 pm - 11:59 pmMCI-ONT
9h 43m2 stops
12:49 am - 8:40 amONT-MCI
5h 51m1 stop
Mon, Aug 12 - Fri, Aug 16
2:44 pm - 11:59 pmMCI-ONT
11h 15m1 stop
12:40 am - 7:41 amONT-MCI
5h 01m1 stop
Sat, Jun 29 - Fri, Jul 5

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 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 $68. KAYAK users also found Kansas City to Ontario round-trip flights on Frontier from $140 and on Delta from $287.

Good to know

Low season

February

High season

June

Cheapest flight

$68
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly with an average 12% increase in price.
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 $68 for a one-way ticket and $140 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?

    SkyTeam, oneworld, 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 $342 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 $539 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 10295 reviews
8.6Crew
7.4Food
8.2Boarding
8.0Entertainment
7.9Comfort
Airline reviews

It was good until there was a 3 hour delay because there was not any pilots to fly the plane.

2.0 MediocreFelipe, Jun 2024DTW - SAN
Read more about Delta reviews

It was good until there was a 3 hour delay because there was not any pilots to fly the plane.

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

Your crew could maybe answer the call bell at least one of the times I pressed it. I pressed it first time with 2.5 hours left in our flight bc my partner was hungry and wanted a sandwich. We finally got the sandwich with 40 mins left in the flight.

The Flight crew didn’t serve us until about 1.5 hours into the flight because of turbulence but after it ended it was fine to move around. They served us water only and snacks and then NEVER, NOT ONE TIME came through to collect trash until right before landing about 1.5 hours later. There was absolutely no need for that. They crew was just standing around talking and visiting with each other and really never tried to see if we might want something besides water or even try to come pick up trash. This is VERY unusual for a Delta flight but it was not what I would have expected for a 4 hour flight.

A regional sized plane was used for a cross country flight with no overhead bin space. I had to "pink check" my laptop and my medications. I was NOT pleased!!!!

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.

Crew was very cooperative and professional. Passenger's first checked in bag should be free.

Flight was delayed due to the late arrival of the catering truck, which is quite unacceptable. There was a beverage service, but no pretzel, or cookie, or nuts were served in coach.

Flighty delayed on boarding - then group 1 had to check their carry on bags but groups 3 and beyond could carry bags on - very inconvenient for weekend business trip with no checked baggage. Then delayed on the runway - before take off. No communication from pilot on why or how long. Wifi/Entertainment didn't work for 4+ flight. Upon arrival, attendants announced wrong carousel for baggage claim - everyone was waiting at the wrong place for their checked bags. This was a mess united!

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

Check in etc was very good. As for on the plane, it was like flying in a freezer. It was so cold, i have flown for years and never been so cold on a plane. Staff on board said its always cold when flying which is a load of rubbish. They wouldnt put any heating on and now i have the flu because of this .

I’ve had a couple flights this week on United that were delayed by an hour or more

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

Our original business class flight was cancelled so we not only downgraded but we were also spread out across the plane not sitting together in separate middle seats. My poor kids were scared and couldn’t see me on the flight and the crew wasn’t sensitive to the situation and what the airlines did to us. Very dissatisfied with United airlines.

My husband and I pre-ordered our food, but they did not have my husband’s order, and my cheese plate was very average. I asked for a blanket and was told they don’t carry blankets on domestic routs. The flight was on time and smooth!

There were delays on both ends. It made it less than excellent. This plane was great though

Everything was great except for the wifi was junk. Crew was super friendly and helpful

Attendants were rude. Scowling. Seats were miserable and we paid extra.

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.

Terrible leg room, seats don’t recline, delayed flight, and even water isn’t free onboard

Flight was good and clean but delayed over an hour on the return flight.

It was nice! There was a very unhappy child in front of us and the flight attendant did a great job calming the child. I was impressed.

They stuck us with multiple extra fees. I will never fly spirit again

The guy with severe body odor sat next to me. For the whole duration of the flight it was a torture. The airline should have better policy on limiting people with bad body odor to board the flight. Passengers should not be the ones to endure bad odor for the whole duration of the flight. The airline should be e the one to ensure decent air quality for ever passenger.

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.

I strongly dislike Frontier. I find them barebones, the seats not particularly comfortable, the nickel and diming is maddening, the app is TERRIBLE - super confusing to navigate, and the last 4 frontier flights I have flown have been on AVERAGE 2 hours late, one ruining a fancy night out in Vegas with reservations made well in advance, which was nodded to with a measly 5000 miles, which translates to almost nothing. At least credit a free checked bag or something.

8 hr delay. had to buy another ticket with another airline

Four and a half hour delay in total. What frustrates me most is the poor communication and disorganization.

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

FRONTIER SUCKS! The agent downstairs tricked me into booking, just to get to the gate. At the gate, they told me they couldn't help. I then called Customer Service. They and the gate attendants kept blaming each other. Neither side was willing to help the customer.

The agent at check-in was strident, unwelcoming, and condescending to customers ahead of me.

Flight was delay 9hrs and nothing was provided at airport, had to go and get a room to sleep in, paid for Uber back and fort with no offers until we landed back home a 1hr later for a $75 voucher for a future flight.

Didn't like anything..entire crew was very rude to everyone on the flight. Plane old and the trays fall down on you the while time you're flying. Charged more for a carry on bag than for the plane ticket itself. Did make it from point a to point b, but worth the extra money to fly with another airline

9 hours of delay!! Was not able to check my luggage that I paid for!!!

It was delayed 9 hours for operational reasons, despite the plane arriving to the airport on time.

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.
8/13Tue
1 stopFrontier
5h 54mMCI-ONT
$68
6/18Tue
1 stopFrontier
6h 15mMCI-ONT
$69
7/10Wed
1 stopDelta
8h 25mMCI-ONT
$148
8/13Tue
2 stopsAmerican Airlines
7h 46mMCI-ONT
$153
7/18Thu
1 stopDelta
7h 38mMCI-ONT
$168
6/28Fri
1 stopAmerican Airlines
4h 48mMCI-ONT
$198
11/8Fri
1 stopUnited Airlines
24h 53mMCI-ONT
$221
7/9Tue
2 stopsAlaska Airlines
18h 40mMCI-ONT
$263
8/16Fri
2 stopsAlaska Airlines
9h 43mMCI-ONT
$266
6/30Sun
2 stopsUnited Airlines
21h 02mMCI-ONT
$289

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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.
6/14Fri
multi-stopFrontier
6h 00mMCI-ONT
6/22Sat
multi-stopFrontier
5h 16mONT-MCI
$177
6/11Tue
multi-stopFrontier
13h 18mMCI-ONT
6/17Mon
multi-stopFrontier
5h 16mONT-MCI
$179
6/14Fri
multi-stopFrontier
6h 00mMCI-ONT
6/17Mon
multi-stopFrontier
8h 39mONT-MCI
$188
6/14Fri
multi-stopFrontier
6h 00mMCI-ONT
6/15Sat
multi-stopFrontier
5h 26mONT-MCI
$258
6/14Fri
multi-stopFrontier
6h 00mMCI-ONT
6/15Sat
multi-stopFrontier
5h 26mONT-MCI
$268
6/15Sat
multi-stopFrontier
7h 17mMCI-ONT
6/17Mon
multi-stopFrontier
8h 39mONT-MCI
$288
6/15Sat
multi-stopDelta
8h 22mMCI-ONT
6/16Sun
multi-stopDelta
5h 49mONT-MCI
$790
6/14Fri
multi-stopAlaska Airlines
8h 24mMCI-ONT
6/23Sun
multi-stopAlaska Airlines
14h 59mONT-MCI
$969
6/11Tue
multi-stopAlaska Airlines
10h 49mMCI-ONT
6/18Tue
multi-stopAlaska Airlines
7h 04mONT-MCI
$983
6/11Tue
multi-stopAlaska Airlines
9h 23mMCI-ONT
6/18Tue
multi-stopAlaska Airlines
7h 04mONT-MCI
$988

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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: