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Uncover the best deals on Kansas City to Ontario flights by comparing fares from hundreds of airlines and agencies.
Good to Know: Cheapest and Fastest MCI - ONT Flights
Useful information for finding best airline tickets from Kansas City International to Ontario International on your next trip.
Cheapest Round Trip Flight
$478
Southwest Airlines
• 1 stop
• 14h 15m
Dec 28 – Jan 01
The cheapest round trip flight from Kansas City to Ontario (MCI-ONT-MCI) is currently $478
Cheapest Direct Flight
$455
Delta Airlines
• nonstop
•
Jun 28
The cheapest nonstop flight from Kansas City to Ontario (MCI-ONT) is currently $455
Fastest Flight
5h 25m
The fastest nonstop flight from Kansas City to Ontario (MCI-ONT) takes 5h 25m
Top Airlines Flying from Kansas City to Ontario
Latest Flight Deals from Kansas City (MCI) to Ontario (ONT)
Compare and book low fare round-trip air tickets from Kansas City to Ontario. Ideal for travelers with confirmed return itineraries.
Dec 28 - Jan 01, Economy
Kansas City → Ontario
14h 15m
10:55 AM - 5:50 PM • 1 stop
Kansas City → Ontario
5h 5m
7:45 AM - 12:50 PM • nonstop
Southwest Airlines
Dec 28 - Jan 01, Economy
Kansas City → Ontario
10h 25m
11:50 AM - 4:15 PM • 1 stop
Kansas City → Ontario
5h 10m
1:20 PM - 6:30 PM • nonstop
Southwest Airlines
Jul 24 - Jul 26, Economy
Kansas City → Ontario
12h 28m
6:00 PM - 11:48 PM • 1 stop
Kansas City → Ontario
5h 16m
6:25 PM - 11:41 PM • nonstop
Delta Airlines
Jul 24 - Jul 26, Economy
Kansas City → Ontario
11h 45m
7:05 AM - 12:10 PM • 1 stop
Kansas City → Ontario
5h 15m
9:35 AM - 2:50 PM • nonstop
Delta Airlines
Dec 29 - Jan 02, Economy
Kansas City → Ontario
13h 34m
12:04 PM - 6:18 PM • 1 stop
Kansas City → Ontario
5h 17m
9:30 AM - 2:47 PM • nonstop
Delta Airlines
Flying to Ontario soon? We've surfaced some of the most affordable last-minute flights from Kansas City to Ontario, ideal for urgent plans or spontaneous trips.
Jun 28 - Jul 04, Economy
Kansas City → Ontario
20h 4m
1:45 PM - 11:49 PM • 1 stop
Kansas City → Ontario
42h 29m
11:58 AM - 3:47 PM • 1 stop
Frontier Airlines
Jun 28 - Jul 04, Economy
Kansas City → Ontario
37h
1:45 PM - 10:05 AM • 1 stop
Kansas City → Ontario
36h 53m
3:34 PM - 3:47 PM • 1 stop
Frontier Airlines
Jun 28 - Jul 04, Economy
Kansas City → Ontario
9h 15m
7:45 PM - 11:40 PM • 1 stop
Kansas City → Ontario
8h 55m
12:55 PM - 8:30 PM • 1 stop
Southwest Airlines
Jun 28 - Jul 04, Economy
Kansas City → Ontario
9h 15m
10:40 AM - 2:35 PM • 1 stop
Kansas City → Ontario
8h 55m
12:55 PM - 8:30 PM • 1 stop
Southwest Airlines
Jun 28 - Jul 04, Economy
Kansas City → Ontario
10h 45m
5:45 PM - 10:30 PM • 1 stop
Kansas City → Ontario
7h 30m
12:45 PM - 7:35 PM • 1 stop
Southwest Airlines
Looking for the fastest way to Ontario? These direct flight options from MCI to ONT offer both convenience and value—no layovers, just straight to your destination.
Jun 28 - Jul 04, Economy
Kansas City → Ontario
- • nonstop
Kansas City → Ontario
- • nonstop
Delta Airlines
Jun 28 - Jul 04, Economy
Kansas City → Ontario
- • nonstop
Kansas City → Ontario
- • nonstop
United Airlines
Jul 03 - Jul 05, Economy
Kansas City → Ontario
5h 34m
7:26 AM - 9:00 AM • nonstop
Kansas City → Ontario
5h 19m
6:30 PM - 11:49 PM • nonstop
Delta Airlines
Jul 03 - Jul 05, Economy
Kansas City → Ontario
5h 30m
3:40 PM - 5:10 PM • nonstop
Kansas City → Ontario
12h 5m
9:50 AM - 7:15 PM • nonstop
Southwest Airlines
Jul 03 - Jul 05, Economy
Kansas City → Ontario
5h 25m
10:55 PM - 12:20 AM • nonstop
Kansas City → Ontario
12h 5m
9:50 AM - 7:15 PM • nonstop
Southwest Airlines
FAQs on Kansas City to Ontario Flights
What are the airports in Kansas City?
MCI
What’s the most popular airline flying from MCI to ONT?
The most popular airline flying from Kansas City to Ontario are
Can I fly from MCI to ONT non-stop?
Yes, you can fly MCI to ONT non-stop on
Which airlines fly nonstop between Kansas City and Ontario?
The non-stop flights between Kansas City and Ontario are .
What’s the earliest departure time from MCI to ONT Airport?
The earliest flight leaves MCI at 5:30 am and lands in ONT - Ontario International
What are the airports in Ontario?
ONT
Can I make changes to my Kansas City to Ontario flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from MCI to ONT?
Read the fare rules of the Kansas City to Ontario air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Kansas City and Ontario?
operate flights between Kansas City and Ontario
How long does a flight from Kansas City to Ontario take?
It takes approximately 3 hour to fly non-stop from MCI to ONT, which is 1317.52 miles by air.
Which airlines provide the cheapest flights from Kansas City (MCI) to Ontario (ONT) ?
In the past couple of days, the cheapest tickets to ONT from MCI were found on DL : USD 528
Do I need a passport to fly between MCI and ONT?
No
What’s the latest departure time from MCI to ONT ?
The last flight leaves MCI at 4:3000 pm
Kansas City (MCI) to Ontario (ONT): Airport Information
| Origin Airport | Kansas City International , Kansas City, US |
| Destination Airport | Ontario International , Ontario, US |
| Distance | 1318 miles |
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