Cheap flights from Kansas City to Ontario (MCI - ONT) from $56

This is the cheapest one-way flight price, found on 9/25. Prices may vary by date and flight preferences.
MCI — ONT
Oct 1 — Oct 81

The best prices from Kansas City to Ontario are usually found in September or February, booked 58 days in advance, depart on a Tuesday or Monday and return on a Friday

How to find the cheapest flight from Kansas City (MCI) to Ontario (ONT)

All the information you need to plan the best MCI to ONT flight in 2023: compare Kansas City to Ontario flight prices with the expected peak season, weather and rainfall in Ontario.

Popular in

June

Cheapest in

September

Round-trip from

$217

One-way from

$193
High demand for flights, 36% potential price rise
Best time to find cheap flights, 51% potential price drop
From Kansas City to Ontario
One-way flight from Kansas City to Ontario

MCI - LAX

Price

$217 - $495

LAX

Temperature

57.2 - 73.4 °F

LAX

Rainfall

0 - 3.4 inches

What is the cheapest day to fly round-trip from Kansas City to Ontario?

Leaving on a Thursday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 43% on the overall cost on flights from Kansas City to Ontario.

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

February can be a great time to fly to Ontario from Kansas City with a flight ticket averaging about $291. Cheapflights users have found deals in the month of February for as cheap as $81. The most expensive prices can be found in the month of April.

When is the cheapest time to fly from Kansas City to Ontario (MCI - ONT)?

A simple way to save on the total cost of your ticket is to fly from Kansas City to Ontario at noon. If you’re flexible enough to do this you can expect to save up to 63% on your trip compared to booking a flight in the morning.

Cheap Alaska Airlines flights from Kansas City to Ontario

Take a peek at the cheapest Alaska Airlines flights we've detected traveling from Kansas City to Ontario. Make sure to double check the flight details before booking.

Cheap Frontier flights from Kansas City to Ontario

Some of the best deals we've found on Frontier flights traveling from Kansas City to Ontario. Ensure the flight price, dates, time, and airline match your criteria before you book.

Cheap Kansas City to Ontario flights in September & October 2023

The best prices found for MCI to ONT flights for September, October
The lowest fares we've come across on flights traveling from Kansas City to Ontario in September and October 2023. Check back in a little while for more flight options.

Kansas City to Ontario 2023 flight deals

Cheap flights to Ontario from Kansas City found for this year
The lowest fares we've come across on flights traveling from Kansas City to Ontario in September and October 2023. Check back in a little while for more flight options.

Kansas City to Ontario flights leaving soon

Late deals on return flights to Ontario from Kansas City, departing today and this week
Consider one of these great deals we found on last-minute flights from Kansas City to Ontario. It's wise to confirm all flight details are correct before booking.

One-way flights to Ontario from Kansas City

The cheapest one-way flights from Kansas City to Ontario
Take a look at some of the best available options we've come across on one-way flights from Kansas City to Ontario. Users can also find round-trip Kansas City to Ontario flights by using the search form above.

Find flights from Kansas City to Ontario within your budget

Use the slider to find flights from Kansas City to Ontario that fit your budget.

Fly from

Any airport

Fly to

Any airport

Budget

$104 - $407

Route

Depart

Return

Price

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Tue 10/24

1 stop7h 27m

Ontario

Wed 10/25

1 stop7h 20m

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Tue 10/24

2 stops18h 00m

Ontario

Wed 10/25

1 stop8h 32m

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Mon 11/13

1 stop22h 11m

Ontario

Mon 11/20

1 stop18h 22m

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Mon 10/16

1 stop22h 34m

Ontario

Wed 10/18

1 stop11h 59m

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Mon 10/9

1 stop22h 34m

Ontario

Fri 10/13

1 stop21h 41m

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Thu 11/2

2 stops19h 33m

Ontario

Tue 11/7

1 stop8h 29m

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Wed 10/25

1 stop14h 00m

Ontario

Mon 10/30

1 stop14h 04m

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Wed 10/25

1 stop7h 16m

Ontario

Sun 10/29

1 stop5h 14m

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Mon 11/20

1 stop5h 31m

Ontario

Thu 11/23

1 stop5h 29m

Flights are sorted by cheapest first

Deals found on 9/24

Reviews of airlines servicing Ontario

Peruse reviews from past customers who have flown with Alaska Airlines, Frontier and United Airlines from Kansas City to Ontario to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.1
Very good
1,393 reviews

Food

7.2

Crew

8.6

Comfort

8.0

Boarding

8.3

Overall

8.1

Entertainment

7.2

Reviews

1 / 10

Overhead space to put my carry on that wasn’t taken by someone in a different seat. Dislike: Deplaning outside on the runway vs enclosed airport. Why are we having to do that?!

Alaska Airlines
8.1
Very good
1,393 reviews
Alaska Airlines
8.1
Very good
1,393 reviews

Food

7.2

Crew

8.6

Comfort

8.0

Boarding

8.3

Overall

8.1

Entertainment

7.2

Reviews

1 / 10

Overhead space to put my carry on that wasn’t taken by someone in a different seat. Dislike: Deplaning outside on the runway vs enclosed airport. Why are we having to do that?!

Delta
7.9
Good
3,021 reviews
Alaska Airlines
8.1
Very good
1,393 reviews

Food

7.2

Crew

8.6

Comfort

8.0

Boarding

8.3

Overall

8.1

Entertainment

7.2

Reviews

1 / 10

Overhead space to put my carry on that wasn’t taken by someone in a different seat. Dislike: Deplaning outside on the runway vs enclosed airport. Why are we having to do that?!

United Airlines
7.4
Good
1,890 reviews
Alaska Airlines
8.1
Very good
1,393 reviews

Food

7.2

Crew

8.6

Comfort

8.0

Boarding

8.3

Overall

8.1

Entertainment

7.2

Reviews

1 / 10

Overhead space to put my carry on that wasn’t taken by someone in a different seat. Dislike: Deplaning outside on the runway vs enclosed airport. Why are we having to do that?!

American Airlines
7.2
Good
2,635 reviews
Alaska Airlines
8.1
Very good
1,393 reviews

Food

7.2

Crew

8.6

Comfort

8.0

Boarding

8.3

Overall

8.1

Entertainment

7.2

Reviews

1 / 10

Overhead space to put my carry on that wasn’t taken by someone in a different seat. Dislike: Deplaning outside on the runway vs enclosed airport. Why are we having to do that?!

Frontier
5.8
Fair
762 reviews
Alaska Airlines
8.1
Very good
1,393 reviews

Food

7.2

Crew

8.6

Comfort

8.0

Boarding

8.3

Overall

8.1

Entertainment

7.2

Reviews

1 / 10

Overhead space to put my carry on that wasn’t taken by someone in a different seat. Dislike: Deplaning outside on the runway vs enclosed airport. Why are we having to do that?!

Related info for your journey

Useful info, stats and facts about Kansas City to Ontario flights.

Can I find flights from Kansas City to Ontario for under $200 on Cheapflights?

Yes, there are multiple flights from Kansas City to Ontario for under $200. The cheapest flight booked recently is on Multiple Airlines for just $104, but on average you can expect to pay $184.

Are there last-minute flights available from Kansas City to Ontario for under $200?

There are currently 20+ open flights from Kansas City to Ontario within the next 7 days for less than $200.

How popular is this Kansas City to Ontario flight route?

What is the cheapest airline to fly from Kansas City to Ontario round-trip?

Flying on Frontier is currently your cheapest option to Ontario, with prices starting at $138. You may be able to fly from Kansas City to Ontario for 67% less than the average price by searching for this airline.

What are the most popular airlines that fly from Kansas City to Ontario?

What does MCI to ONT mean?

Great question - MCI to ONT just means Kansas City Airport to Ontario Airport. Now you’ll know what these unique codes when you look for flights!

Other flights to Ontario

Alternative routes for Kansas City to Ontario

See prices for flight routes from nearby airports that may be better suited for you.

Top 5 airlines flying from Kansas City to Ontario

The chart below displays the airlines Cheapflights users traveling from Kansas City to Ontario choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$107Average$216FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
FrontierCheapest$159Average$276FlexibilityNo cancel feeOn-time62%
Search Frontier flights
DeltaCheapest$277Average$386FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapest$324Average$484FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest$329Average$565FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Hourly flight availability from Kansas City to Ontario

See what time of day planes typically take off from Kansas City to Ontario
0%of flight departuresEarly morningMidnight to 6 am
0%of flight departuresMorning6 am to noon
0%of flight departuresAfternoonNoon to 6 pm
100%of flight departuresEvening6 pm to midnight
Midnight
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Noon
6 PM
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