MCI - ONT

$62 Find Cheap Flights from Kansas City to Ontario - Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Everything you should know

Cheapest round-trip
$180
Typical prices: $321-$481
Frontier
Sat 10/27Sat 11/17
MCI - ONT • 1 stop
Cheapest one-way
$62
Typical prices: $170-$360
Frontier
Wed 11/14
MCI - ONT • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Kansas City and Ontario. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
October
Cheapest • 25% price drop
November
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Salt Lake City (SLC)
Cheapest • Avg $311 (round-trip)
Phoenix Sky Harbor Intl (PHX)
Shortest trip • 5h 21m (one-way)
Insights
Insights
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Ontario!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Kansas City to Ontario (MCI-ONT)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Kansas City to Ontario

Tue, Oct 27 - Tue, Nov 17
Frontier Logo
2:17 pm - 1:40 pmMCI  Kansas City-ONT Ontario
25h 23m1 stop Denver Intl
Frontier Logo
2:35 pm - 1:22 pmONT  Ontario-MCI Kansas City
20h 47m1 stop Denver Intl
$180Frontier
Thu, Sep 24 - Tue, Sep 29
Frontier Logo
10:30 pm - 10:30 amMCI  Kansas City-ONT Ontario
38h 00m2 stops Las Vegas Harry Reid Intl Denver Intl
Frontier Logo
6:15 am - 7:37 pmONT  Ontario-MCI Kansas City
11h 22m1 stop Denver Intl
$189Frontier
Wed, Nov 4 - Mon, Nov 9
Multiple Airlines Logo
2:17 pm - 11:55 pmMCI  Kansas City-ONT Ontario
11h 38m1 stop Denver Intl
Multiple Airlines Logo
7:15 am - 5:13 pmONT  Ontario-MCI Kansas City
7h 58m1 stop Portland
$317Multiple Airlines
Wed, Sep 2 - Wed, Sep 9
Multiple Airlines Logo
7:00 am - 2:09 pmMCI  Kansas City-ONT Ontario
9h 09m1 stop Seattle/Tacoma Intl
Multiple Airlines Logo
11:45 am - 7:37 pmONT  Ontario-MCI Kansas City
5h 52m1 stop Denver Intl
$317Multiple Airlines
Wed, Jan 6 - Sat, Jan 9
American Airlines Logo
8:00 am - 4:07 pmMCI  Kansas City-ONT Ontario
10h 07m1 stop Phoenix Sky Harbor Intl
American Airlines Logo
12:57 pm - 11:59 pmONT  Ontario-MCI Kansas City
9h 02m1 stop Phoenix Sky Harbor Intl
$363American Airlines
Thu, Nov 12 - Mon, Nov 16
American Airlines Logo
5:20 am - 9:40 amMCI  Kansas City-ONT Ontario
6h 20m1 stop Dallas/Fort Worth
American Airlines Logo
11:59 pm - 10:09 amONT  Ontario-MCI Kansas City
8h 10m1 stop Dallas/Fort Worth
$371American Airlines
Wed, Nov 4 - Mon, Nov 9
United Airlines Logo
1:09 pm - 8:51 pmMCI  Kansas City-ONT Ontario
9h 42m2 stops Chicago O'Hare Intl Denver Intl
United Airlines Logo
5:00 am - 12:28 pmONT  Ontario-MCI Kansas City
5h 28m1 stop Denver Intl
$376United Airlines
Mon, Oct 26 - Sat, Oct 31
Southwest Logo
3:40 pm - 9:20 pmMCI  Kansas City-ONT Ontario
7h 40m2 stops Denver Intl Phoenix Sky Harbor Intl
Southwest Logo
5:40 am - 2:55 pmONT  Ontario-MCI Kansas City
7h 15m2 stops Las Vegas Harry Reid Intl Dallas Love Field
$381Southwest
Wed, Jan 6 - Sat, Jan 9
Southwest Logo
2:05 pm - 7:45 pmMCI  Kansas City-ONT Ontario
7h 40m2 stops Denver Intl Phoenix Sky Harbor Intl
Southwest Logo
9:40 am - 6:40 pmONT  Ontario-MCI Kansas City
7h 00m2 stops Las Vegas Harry Reid Intl Phoenix Sky Harbor Intl
$407Southwest
Wed, Sep 9 - Fri, Sep 11
United Airlines Logo
1:44 pm - 8:01 pmMCI  Kansas City-ONT Ontario
8h 17m2 stops Denver Intl San Francisco
United Airlines Logo
6:08 am - 4:12 pmONT  Ontario-MCI Kansas City
8h 04m2 stops San Francisco Denver Intl
$427United Airlines
Booking Insights

Price, demand and travel trends for Kansas City to Ontario flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Kansas City to Ontario with more confidence.

How much is a round-trip flight from Kansas City to Ontario?

Round-trip flights from Kansas City to Ontario start at $180. Prices are below average for this route right now, with typical round-trip fares ranging from $321 to $481. The lowest price found in the past 5 days was $180 on Frontier.

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

Wednesday is the cheapest day of the week to fly from Kansas City to Ontario, it is 13% cheaper than the average day. Sunday is the most expensive day with flight prices 43% higher than average. Based on deals found by KAYAK users in the last 12 months.

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

  • October is the cheapest month to fly from Kansas City to Ontario at $293 round-trip.
  • July ($540) and May ($497) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 84% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

Find deals

Key details for Kansas City to Ontario flights

Low season

February

Cheapest flight

$62
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly and prices are also 2% 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

Your Kansas City to Ontario flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from Kansas City to Ontario?

    Flights from Kansas City to Ontario usually depart from Kansas City (MCI) and arrive at Ontario (ONT).

  • What cabin classes can I book on flights from Kansas City to Ontario?

    Only Economy Class is available on flights from Kansas City to Ontario.

  • Which airports do connecting flights from Kansas City to Ontario pass through?

    One-stop flights from Kansas City to Ontario most commonly connect through:

    • Denver Intl (DEN) - 57% of one-stop connections
    • Phoenix Sky Harbor Intl (PHX) - 32% of one-stop connections
    • Dallas/Fort Worth (DFW) - 6% of one-stop connections
    • Salt Lake City (SLC) - 3% of one-stop connections

    Denver Intl (DEN) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Kansas City to Ontario?

    Yes. Being flexible with your travel dates can save you up to 39% on the Kansas City to Ontario route. Wednesday is the cheapest departure day at $343 round-trip on average, while Sunday is the most expensive at $562, a difference of $219. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Ontario?

    Some of the most popular sights in Ontario are Ontario Convention Center, Ontario Mills and Cucamonga-Guasti Regional Park. These are among the most viewed places in Ontario on KAYAK.

  • How long is a flight from Kansas City to Ontario?

    A nonstop flight from Kansas City to Ontario takes 0h 00m, covering 1,314 miles.

  • What are the earliest and latest flights from Kansas City to Ontario?

    These are the earliest and latest flight times available from Kansas City to Ontario:

    • Earliest: departs at 12:00 am and lands at 12:00 am
    • Latest: departs at 12:00 am and lands at 12:00 am.

    The flight takes about 0h 00m.

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

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

  • How are flight prices from Kansas City to Ontario looking right now?

    One-way fares from Kansas City to Ontario are currently lower than usual. Average one-way flight prices are about $190, which is 21% below the typical average for this route.

  • How much time can I save by choosing a different layover airport from Kansas City to Ontario?

    Flying via Phoenix Sky Harbor Intl (PHX) gives the shortest average 1-stop total travel time at 5h 21m, compared with 5h 32m via Salt Lake City (SLC) and 6h 29m via Dallas/Fort Worth (DFW).

  • What is the time difference between Kansas City and Ontario?

    Ontario is 2 hours behind Kansas City (Pacific Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Ontario Airport (ONT)?

    Ontario Airport (ONT) hosts 5 major car rental companies, with daily rates starting from around $18 for economy cars. Top options include:
    · Fox
    · Thrifty
    · Europcar
    · Dollar
    · Alamo

  • How much should I expect to pay for a Kansas City to Ontario flight?

    Round-trip flights from Kansas City to Ontario range from $321 to $481, with an average of $392 over the past 12 months. Anything below $321 counts as a good deal.

Your guide to booking Kansas City to Ontario flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Wednesday departure instead of Sunday. On this route, Wednesday flights average $343 - about $219 less than Sunday (39% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Kansas City to Ontario trip for October. Fares historically average $293 round-trip in that month - typically $247 less than the most expensive month, which is July (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Ontario Airport.
    - Azure Hotel & Suites, Trademark Collection by Wyndham
    - La Quinta Inn & Suites by Wyndham Ontario Airport
    - Holiday Inn Ontario Airport By IHG

Everything you need to know for your flight from Kansas City to Ontario

Information on your arrival and departure airports

Kansas City (MCI)
Ontario (ONT)