$70+ Cheap flights from Kansas City to Ontario (MCI - ONT)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
MCI — ONT
May 17 — May 241
Round-trip
1 adult, Economy
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Find cheap flights from Kansas City to Ontario with Cheapflights
1. Tell us where you want to go
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Cheapest flights from Kansas City to OntarioExplore the most affordable flight options available from Kansas City to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2026.
Explore the most affordable flight options available from Kansas City to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/62:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Tue 5/126:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 4/12![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/52:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Sat 5/96:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 4/12![Frontier logo]()
$156
This Frontier deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/52:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Tue 5/196:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 4/14![Frontier logo]()
$160
This Booking.com deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/232:34 pm
MCI
- ONT
1 stop21h 31m
Frontier
Tue 5/266:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 4/12![Frontier logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/52:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Mon 5/1111:36 am
ONT
- MCI
2 stops24h 13m
Frontier
Deal found 4/12![Frontier logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/62:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Mon 5/1111:36 am
ONT
- MCI
2 stops24h 13m
Frontier
Deal found 4/12![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/132:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Wed 5/2010:50 am
ONT
- MCI
1 stop24h 59m
Frontier
Deal found 4/15![Frontier logo]()
$173
This Frontier deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/22:51 pm
MCI
- ONT
1 stop11h 04m
Frontier
Sun 5/312:59 am
ONT
- MCI
1 stop10h 31m
Frontier
Deal found 4/12![Frontier logo]()
$180
This Frontier deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/92:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Tue 5/126:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 4/12![Frontier logo]()
$185
This Frontier deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/72:34 pm
MCI
- ONT
1 stop21h 31m
Frontier
Wed 5/136:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 4/14![Frontier logo]()
$186
This CheapOair deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/122:34 pm
MCI
- ONT
1 stop21h 31m
Frontier
Sat 5/1610:50 am
ONT
- MCI
1 stop24h 59m
Frontier
Deal found 4/14![Frontier logo]()
$196
This Booking.com deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/232:34 pm
MCI
- ONT
1 stop21h 31m
Frontier
Mon 5/2510:50 am
ONT
- MCI
1 stop24h 59m
Frontier
Deal found 4/13![Frontier logo]()
$198
Best flights from Kansas City to OntarioDiscover carefully curated flight deals from Kansas City to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 17, 2026.
Discover carefully curated flight deals from Kansas City to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 17, 2026.
This Delta deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/187:02 am
MCI
- ONT
1 stop7h 08m
Delta
Wed 6/245:24 pm
ONT
- MCI
1 stop4h 54m
Delta
Deal found 4/12![Delta logo]()
$419
This Southwest deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/136:55 am
MCI
- ONT
2 stops6h 25m
Southwest
Mon 7/2712:45 pm
ONT
- MCI
2 stops8h 35m
Southwest
Deal found 4/13![Southwest logo]()
$476
This Alaska Airlines deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/295:11 pm
MCI
- ONT
1 stop8h 37m
Alaska Airlines
Tue 5/57:00 am
ONT
- MCI
1 stop7h 17m
Alaska Airlines
Deal found 4/12![Alaska Airlines logo]()
$479
This United Airlines deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/46:00 am
MCI
- ONT
2 stops8h 22m
United Airlines
Sat 5/96:00 am
ONT
- MCI
2 stops8h 15m
United Airlines
Deal found 4/15![United Airlines logo]()
$502
This Delta deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/35:40 am
MCI
- ONT
1 stop7h 56m
Delta
Mon 5/45:05 pm
ONT
- MCI
1 stop5h 33m
Delta
Deal found 4/12![Delta logo]()
$446
This United Airlines deal was found by Cheapflights users on 4/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/86:17 am
MCI
- ONT
2 stops13h 35m
United Airlines
Mon 5/115:00 am
ONT
- MCI
1 stop5h 43m
United Airlines
Deal found 4/11![United Airlines logo]()
$511
This Delta deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/266:40 am
MCI
- ONT
1 stop7h 39m
Delta
Tue 5/264:57 pm
ONT
- MCI
1 stop5h 28m
Delta
Deal found 4/16![Delta logo]()
$465
This Delta deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/187:02 am
MCI
- ONT
1 stop7h 08m
Delta
Thu 6/185:24 pm
ONT
- MCI
1 stop4h 54m
Delta
Deal found 4/12![Delta logo]()
$467
This Delta deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/187:38 pm
MCI
- ONT
1 stop6h 07m
Delta
Fri 6/265:24 pm
ONT
- MCI
1 stop4h 54m
Delta
Deal found 4/14![Delta logo]()
$467
This Delta deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/223:06 pm
MCI
- ONT
1 stop8h 42m
Delta
Fri 5/291:35 pm
ONT
- MCI
1 stop7h 35m
Delta
Deal found 4/16![Delta logo]()
$502
Last-minute flights from Kansas City to OntarioDiscover last-minute flight deals from Kansas City to Ontario. Data last updated April 17, 2026 and is based on user searches.
Discover last-minute flight deals from Kansas City to Ontario. Data last updated April 17, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/22:51 pm
MCI
- ONT
1 stop11h 04m
Frontier
Tue 5/56:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 4/12![Frontier logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/52:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Sat 5/96:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 4/12![Frontier logo]()
$156
This Frontier deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/52:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Tue 5/196:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 4/14![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/52:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Mon 5/1111:36 am
ONT
- MCI
2 stops24h 13m
Frontier
Deal found 4/12![Frontier logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/62:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Tue 5/126:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 4/12![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/62:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Mon 5/1111:36 am
ONT
- MCI
2 stops24h 13m
Frontier
Deal found 4/12![Frontier logo]()
$171
This Frontier deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/72:34 pm
MCI
- ONT
1 stop21h 31m
Frontier
Wed 5/136:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 4/14![Frontier logo]()
$186
This Frontier deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/92:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Tue 5/126:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 4/12![Frontier logo]()
$185
This CheapOair deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/122:34 pm
MCI
- ONT
1 stop21h 31m
Frontier
Sat 5/1610:50 am
ONT
- MCI
1 stop24h 59m
Frontier
Deal found 4/14![Frontier logo]()
$196
This Kiwi.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/132:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Wed 5/2010:50 am
ONT
- MCI
1 stop24h 59m
Frontier
Deal found 4/15![Frontier logo]()
$173
This Booking.com deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/232:34 pm
MCI
- ONT
1 stop21h 31m
Frontier
Tue 5/266:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 4/12![Frontier logo]()
$162
This Booking.com deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/232:34 pm
MCI
- ONT
1 stop21h 31m
Frontier
Mon 5/2510:50 am
ONT
- MCI
1 stop24h 59m
Frontier
Deal found 4/13![Frontier logo]()
$198
One-way flights from Kansas City to OntarioSearch for one-way flight options from Kansas City to Ontario. Find affordable one-way fares based on user searches. Data last updated April 17, 2026.
Search for one-way flight options from Kansas City to Ontario. Find affordable one-way fares based on user searches. Data last updated April 17, 2026.
This Trip.com deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/62:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Deal found 4/12![Frontier logo]()
$70
This Super.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/72:34 pm
MCI
- ONT
1 stop21h 31m
Frontier
Deal found 4/15![Frontier logo]()
$85
This Trip.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/132:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Deal found 4/15![Frontier logo]()
$89
This Super.com deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/22:51 pm
MCI
- ONT
1 stop11h 04m
Frontier
Deal found 4/14![Frontier logo]()
$105
This Super.com deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/112:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Deal found 4/16![Frontier logo]()
$110
This Trip.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/91:45 pm
MCI
- ONT
1 stop12h 04m
Frontier
Deal found 4/15![Frontier logo]()
$117
This Trip.com deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/192:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Deal found 4/12![Frontier logo]()
$127
This Super.com deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/52:34 pm
MCI
- ONT
1 stop21h 31m
Frontier
Deal found 4/13![Frontier logo]()
$128
Find flight deals from Kansas City to Ontario
Discover tips and strategies to find the most affordable flight options for your journey from Kansas City (MCI) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $140 (Kiwi.com) |
One-way from | $70 (Trip.com) |
Popular in | December |
Cheapest in | October |
Average price | $360 |
Cheapflights Fare Finder
Customize your flight search to find flights from Kansas City to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 17, 2026.
Use the filters below to find and compare flights from Kansas City to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Thu 6/18
7:02 am-12:10 pm
1 stop7h 08m
Ontario
Wed 6/24
5:24 pm-12:18 am
1 stop4h 54m
$419
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Sun 5/3
5:40 am-11:36 am
1 stop7h 56m
Ontario
Mon 5/4
5:05 pm-12:38 am
1 stop5h 33m
$446
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Tue 5/26
6:40 am-12:19 pm
1 stop7h 39m
Ontario
Tue 5/26
4:57 pm-12:25 am
1 stop5h 28m
$465
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Thu 6/18
7:02 am-12:10 pm
1 stop7h 08m
Ontario
Thu 6/18
5:24 pm-12:18 am
1 stop4h 54m
$467
Quickest round-trip
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Thu 6/18
7:38 pm-11:45 pm
1 stop6h 07m
Ontario
Fri 6/26
5:24 pm-12:18 am
1 stop4h 54m
$467
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Mon 7/13
6:55 am-11:20 am
2 stops6h 25m
Ontario
Mon 7/27
12:45 pm-11:20 pm
2 stops8h 35m
$476
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Wed 4/29
5:11 pm-11:48 pm
1 stop8h 37m
Ontario
Tue 5/5
7:00 am-4:17 pm
1 stop7h 17m
$479
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Mon 5/4
6:00 am-12:22 pm
2 stops8h 22m
Ontario
Sat 5/9
6:00 am-4:15 pm
2 stops8h 15m
$502
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Fri 5/22
3:06 pm-9:48 pm
1 stop8h 42m
Ontario
Fri 5/29
1:35 pm-11:10 pm
1 stop7h 35m
$502
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Fri 5/8
6:17 am-5:52 pm
2 stops13h 35m
Ontario
Mon 5/11
5:00 am-12:43 pm
1 stop5h 43m
$511
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from Kansas City to Ontario
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Kansas City to Ontario in April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Kansas City-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Kansas City-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Kansas City-Ontario flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Kansas City-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Kansas City-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Kansas City to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Kansas City with our price prediction graph.
MCI-ONT
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Kansas City to Ontario
Prices
More
What is the cheapest month to book a flight from Kansas City to Ontario?
Currently, October is the cheapest month in which you can book a flight from Kansas City to Ontario (average of $306). Flying from Kansas City to Ontario in December is currently the most expensive (average of $439). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Kansas City to Ontario?
What’s the top layover airport for flights from Kansas City to Ontario?
Share of 1-stop round-trip flights from Kansas City to Ontario chosen by Cheapflights users in the past 12 months, using the same layover each way.
Denver (DEN) – chosen by Cheapflights users on 67% of 1-stop itineraries from Kansas City to Ontario on Cheapflights.
What’s the cheapest layover airport for flights from Kansas City to Ontario?
Average round-trip fare for 1-stop flights from Kansas City to Ontario, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Denver (DEN) is the most affordable 1-stop option, with an average round-trip price of $163.
What’s the fastest layover option from Kansas City to Ontario?
Shortest average travel time for 1-stop one-way flights from Kansas City to Ontario, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Phoenix (PHX) have the shortest average one-way travel time for 1-stop routes: 4h 55m.
Which airport typically offers the quickest layover for flights from Kansas City to Ontario?
Average layover duration for 1-stop one-way flights from Kansas City to Ontario, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Phoenix (PHX) offer the fastest connection on this route, with an average layover time of 1h 03m.
Reviews of airlines servicing Ontario
Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated April 17, 2026.
Peruse reviews from past customers who have flown with Southwest,United Airlines, andAmerican Airlines from Kansas City to Ontario to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Crew
8.6
Overall
8.0
Entertainment
7.5
Food
7.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Crew
8.6
Overall
8.0
Entertainment
7.5
Food
7.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Crew
8.6
Overall
8.0
Entertainment
7.5
Food
7.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Crew
8.6
Overall
8.0
Entertainment
7.5
Food
7.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Crew
8.6
Overall
8.0
Entertainment
7.5
Food
7.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from Kansas City to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on April 17, 2026.
Kansas City and Ontario flights
Browse other Kansas City and Ontario flight options. Last updated on April 17, 2026.
Popular flight searches
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Top 4 airlines flying from Kansas City to Ontario
Discover the top 4 airlines that operate flights from Kansas City to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$142 | Average$268 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$284 | Average$401 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$284 | Average$402 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$289 | Average$393 | FlexibilityNo cancel fee | On-time63% |