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MCI - ONT

$77 Find Cheap Flights from Kansas City to Ontario - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$168
Typical prices: $344-$487
Frontier
Tue 11/6Sat 11/10
MCI - ONT • 1 stop
Cheapest one-way
$77
Typical prices: $172-$349
Frontier
Fri 10/26
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 • 36% 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
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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

Fri, Nov 6 - Tue, Nov 10
Frontier Logo
8:43 pm - 10:42 amMCI  Kansas City-ONT Ontario
15h 59m1 stop Denver Intl
Frontier Logo
6:25 am - 7:47 pmONT  Ontario-MCI Kansas City
11h 22m1 stop Denver Intl
$168Frontier
Tue, Nov 10 - Sat, Nov 14
Frontier Logo
8:43 pm - 11:51 pmMCI  Kansas City-ONT Ontario
5h 08m1 stop Denver Intl
Frontier Logo
11:52 am - 7:47 pmONT  Ontario-MCI Kansas City
5h 55m1 stop Denver Intl
$170Frontier
Fri, Nov 6 - Tue, Nov 10
Southwest Logo
6:30 pm - 10:15 pmMCI  Kansas City-ONT Ontario
5h 45m1 stop Dallas Love Field
Southwest Logo
12:50 pm - 9:25 pmONT  Ontario-MCI Kansas City
6h 35m2 stops Phoenix Sky Harbor Intl Denver Intl
$329Southwest
Wed, Nov 18 - Sat, Nov 21
Multiple Airlines Logo
7:00 am - 3:13 pmMCI  Kansas City-ONT Ontario
10h 13m1 stop Seattle/Tacoma Intl
Multiple Airlines Logo
10:47 pm - 12:34 pmONT  Ontario-MCI Kansas City
11h 47m1 stop Las Vegas Harry Reid Intl
$349Multiple Airlines
Mon, Nov 2 - Thu, Nov 12
Multiple Airlines Logo
12:53 pm - 4:21 pmMCI  Kansas City-ONT Ontario
5h 28m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
12:02 pm - 11:59 pmONT  Ontario-MCI Kansas City
9h 57m1 stop Seattle/Tacoma Intl
$354Multiple Airlines
Sat, Nov 21 - Tue, Dec 1
Southwest Logo
7:20 pm - 11:45 pmMCI  Kansas City-ONT Ontario
6h 25m2 stops Denver Intl Las Vegas Harry Reid Intl
Southwest Logo
12:50 pm - 9:25 pmONT  Ontario-MCI Kansas City
6h 35m2 stops Phoenix Sky Harbor Intl Denver Intl
$381Southwest
Wed, Nov 18 - Sat, Nov 21
American Airlines Logo
5:20 am - 9:40 amMCI  Kansas City-ONT Ontario
6h 20m1 stop Dallas/Fort Worth
American Airlines Logo
2:09 pm - 12:24 amONT  Ontario-MCI Kansas City
8h 15m1 stop Dallas/Fort Worth
$403American Airlines
Wed, Nov 11 - Sat, Nov 14
American Airlines Logo
5:20 am - 12:38 pmMCI  Kansas City-ONT Ontario
9h 18m2 stops Dallas/Fort Worth Phoenix Sky Harbor Intl
American Airlines Logo
1:23 pm - 12:24 amONT  Ontario-MCI Kansas City
9h 01m2 stops Phoenix Sky Harbor Intl Chicago O'Hare Intl
$403American Airlines
Tue, Nov 10 - Tue, Nov 17
United Airlines Logo
6:00 am - 12:33 pmMCI  Kansas City-ONT Ontario
8h 33m2 stops Chicago O'Hare Intl Denver Intl
United Airlines Logo
6:00 am - 4:11 pmONT  Ontario-MCI Kansas City
8h 11m2 stops San Francisco Denver Intl
$403United Airlines
Wed, Nov 4 - Tue, Nov 10
United Airlines Logo
11:31 am - 6:01 pmMCI  Kansas City-ONT Ontario
8h 30m2 stops Denver Intl San Francisco
United Airlines Logo
6:00 am - 4:11 pmONT  Ontario-MCI Kansas City
8h 11m2 stops San Francisco Denver Intl
$403United 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 with more confidence.

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

Round-trip flights from Kansas City to Ontario typically range from $344 to $487. The lowest price found in the past 5 days was $168, on Frontier.

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

Based on deals KAYAK users found in the last 12 months, Wednesday is the cheapest day of the week to fly from Kansas City to Ontario. It’s 8% cheaper than the average day, while Sunday is the most expensive, with prices 32% higher.

What’s the cheapest month to fly from Kansas City to Ontario?

•October is the cheapest month to fly from Kansas City to Ontario at $256 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 110% 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

$77
Beat the crowds with an average 35% drop in travelers.
The most popular month to fly with an average 16% increase in travelers.
One-way 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 answers about this route, including flight times, airports, airlines and booking tips.

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

    Three cabin classes are available on flights from Kansas City to Ontario:

    • Economy Class
    • Premium Economy Class
    • First Class

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

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

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

    Round-trip flights from Kansas City to Ontario range from $344 to $487, with an average of $398 over the past 12 months. Anything below $344 counts as a good deal.

  • 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 $161, which is 33% below the typical average for this route.

  • 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

  • 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).

  • 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) - 59% of one-stop connections
    • Phoenix Sky Harbor Intl (PHX) - 29% of one-stop connections
    • Dallas/Fort Worth (DFW) - 5% of one-stop connections
    • Las Vegas Harry Reid Intl (LAS) - 3% of one-stop connections

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

    Yes. Flexible dates can save you up to 30% on flights from Kansas City to Ontario. Wednesday is the cheapest departure day at $370 round-trip on average, while Sunday is the most expensive at $526, a difference of $156.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • 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 popular places can I visit in Ontario?

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

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 are flexible, aim for a Wednesday departure and avoid flying on Sunday. On this route, Wednesday flights average $370, about $156 less than Sunday fares (30% 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 $256 round-trip in that month - typically $284 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
    • Ontario Airport Inn

More options for your flight from Kansas City to Ontario

Complete your trip to Ontario with a hotel stay or car rental

Car rentals in Ontario
Hotels in Ontario
Vacations in Ontario