$60+ 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 5/2. Fares are subject to change and may not be available on all flights or dates of travel.
MCI — ONT
Mar 28 — Apr 41
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
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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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 February 26, 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 February 26, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/22. 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.
Sat 4/252:51 pm
MCI
- ONT
1 stop11h 04m
Frontier
Sun 4/2612:59 am
ONT
- MCI
1 stop10h 31m
Frontier
Deal found 2/22![Frontier logo]()
$167
This Frontier deal was found by Cheapflights users on 2/23. 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 4/302:15 pm
MCI
- ONT
1 stop11h 40m
Frontier
Sun 5/312:59 am
ONT
- MCI
1 stop10h 31m
Frontier
Deal found 2/23![Frontier logo]()
$190
This Booking.com deal was found by Cheapflights users on 2/24. 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.
Mon 4/202:15 pm
MCI
- ONT
1 stop11h 40m
Frontier
Thu 4/235:33 pm
ONT
- MCI
1 stop17h 57m
Frontier
Deal found 2/24![Frontier logo]()
$203
This Frontier deal was found by Cheapflights users on 2/25. 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 4/98:46 pm
MCI
- ONT
1 stop5h 10m
Frontier
Mon 4/136:20 am
ONT
- MCI
1 stop11h 38m
Frontier
Deal found 2/25![Frontier logo]()
$211
This Booking.com deal was found by Cheapflights users on 2/24. 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.
Mon 4/202:15 pm
MCI
- ONT
1 stop11h 40m
Frontier
Sat 4/2512:59 am
ONT
- MCI
1 stop10h 31m
Frontier
Deal found 2/24![Frontier logo]()
$224
This Frontier deal was found by Cheapflights users on 2/24. 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.
Fri 4/108:43 pm
MCI
- ONT
1 stop5h 13m
Frontier
Mon 4/136:20 am
ONT
- MCI
1 stop11h 38m
Frontier
Deal found 2/24![Frontier logo]()
$232
This Kiwi.com deal was found by Cheapflights users on 2/22. 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 3/256:04 pm
MCI
- ONT
1 stop15h 08m
Multiple Airlines
Mon 3/309:49 pm
ONT
- MCI
1 stop17h 20m
Multiple Airlines
Deal found 2/22![Multiple Airlines logo]()
$238
This Expedia deal was found by Cheapflights users on 2/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/48:43 pm
MCI
- ONT
1 stop5h 13m
Frontier
Tue 4/76:20 am
ONT
- MCI
1 stop11h 38m
Frontier
Deal found 2/25![Frontier logo]()
$240
This Kiwi.com deal was found by Cheapflights users on 2/25. 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.
Thu 4/162:15 pm
MCI
- ONT
1 stop19h 16m
Frontier
Sun 4/198:21 am
ONT
- MCI
2 stops27h 09m
Frontier
Deal found 2/25![Frontier logo]()
$241
This Kiwi.com deal was found by Cheapflights users on 2/24. 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 4/146:04 pm
MCI
- ONT
1 stop18h 40m
Multiple Airlines
Sun 4/2612:59 am
ONT
- MCI
1 stop10h 31m
Multiple Airlines
Deal found 2/24![Multiple Airlines logo]()
$243
This Frontier deal was found by Cheapflights users on 2/25. 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.
Fri 3/278:40 pm
MCI
- ONT
1 stop5h 19m
Frontier
Fri 4/36:20 am
ONT
- MCI
1 stop11h 38m
Frontier
Deal found 2/25![Frontier logo]()
$250
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 February 26, 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 February 26, 2026.
This Alaska Airlines deal was found by Cheapflights users on 2/25. 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 4/16:15 am
MCI
- ONT
1 stop19h 44m
Alaska Airlines
Wed 4/156:00 am
ONT
- MCI
1 stop15h 59m
Alaska Airlines
Deal found 2/25![Alaska Airlines logo]()
$285
This Delta deal was found by Cheapflights users on 2/22. 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.
Wed 3/188:11 pm
MCI
- ONT
1 stop5h 40m
Delta
Thu 3/265:09 pm
ONT
- MCI
1 stop5h 37m
Delta
Deal found 2/22![Delta logo]()
$323
This United Airlines deal was found by Cheapflights users on 2/25. 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.
Wed 4/811:30 am
MCI
- ONT
2 stops11h 06m
United Airlines
Sat 4/1810:49 am
ONT
- MCI
2 stops10h 43m
United Airlines
Deal found 2/25![United Airlines logo]()
$347
This United Airlines deal was found by Cheapflights users on 2/23. 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.
Tue 4/79:00 am
MCI
- ONT
2 stops11h 02m
United Airlines
Wed 4/156:05 am
ONT
- MCI
1 stop6h 14m
United Airlines
Deal found 2/23![United Airlines logo]()
$390
This Delta deal was found by Cheapflights users on 2/22. 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 3/108:11 pm
MCI
- ONT
1 stop5h 40m
Delta
Tue 3/175:09 pm
ONT
- MCI
1 stop5h 37m
Delta
Deal found 2/22![Delta logo]()
$420
This Alaska Airlines deal was found by Cheapflights users on 2/24. 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.
Sat 5/165:52 pm
MCI
- ONT
1 stop8h 04m
Alaska Airlines
Sat 8/1512:02 pm
ONT
- MCI
1 stop9h 57m
Alaska Airlines
Deal found 2/24![Alaska Airlines logo]()
$420
This United Airlines deal was found by Cheapflights users on 2/21. 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.
Tue 3/245:21 pm
MCI
- ONT
1 stop5h 29m
United Airlines
Thu 3/261:50 pm
ONT
- MCI
1 stop7h 25m
United Airlines
Deal found 2/21![United Airlines logo]()
$403
This Delta deal was found by Cheapflights users on 2/22. 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 5/267:40 pm
MCI
- ONT
1 stop5h 54m
Delta
Wed 5/279:50 am
ONT
- MCI
1 stop5h 43m
Delta
Deal found 2/22![Delta logo]()
$427
This United Airlines deal was found by Cheapflights users on 2/22. 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.
Sat 3/215:30 pm
MCI
- ONT
1 stop7h 27m
United Airlines
Thu 3/261:50 pm
ONT
- MCI
1 stop7h 25m
United Airlines
Deal found 2/22![United Airlines logo]()
$403
This Delta deal was found by Cheapflights users on 2/22. 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 5/246:40 am
MCI
- ONT
1 stop7h 39m
Delta
Thu 5/284:57 pm
ONT
- MCI
1 stop5h 28m
Delta
Deal found 2/22![Delta logo]()
$427
This United Airlines deal was found by Cheapflights users on 2/25. 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.
Wed 5/2011:29 am
MCI
- ONT
2 stops8h 23m
United Airlines
Mon 5/256:30 am
ONT
- MCI
1 stop9h 06m
United Airlines
Deal found 2/25![United Airlines logo]()
$407
Last-minute flights from Kansas City to OntarioDiscover last-minute flight deals from Kansas City to Ontario. Data last updated February 26, 2026 and is based on user searches.
Discover last-minute flight deals from Kansas City to Ontario. Data last updated February 26, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 2/23. 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.
Mon 3/28:33 pm
MCI
- ONT
1 stop5h 26m
Frontier
Sat 3/76:15 am
ONT
- MCI
1 stop11h 40m
Frontier
Deal found 2/23![Frontier logo]()
$276
This Frontier deal was found by Cheapflights users on 2/22. 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 3/78:40 pm
MCI
- ONT
1 stop5h 19m
Frontier
Mon 3/166:15 am
ONT
- MCI
1 stop11h 38m
Frontier
Deal found 2/22![Frontier logo]()
$279
This Frontier deal was found by Cheapflights users on 2/22. 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.
Mon 3/98:38 pm
MCI
- ONT
1 stop5h 21m
Frontier
Mon 3/166:15 am
ONT
- MCI
1 stop11h 38m
Frontier
Deal found 2/22![Frontier logo]()
$254
This Frontier deal was found by Cheapflights users on 2/22. 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.
Mon 3/98:38 pm
MCI
- ONT
1 stop5h 21m
Frontier
Thu 3/126:15 am
ONT
- MCI
1 stop11h 40m
Frontier
Deal found 2/22![Frontier logo]()
$271
This Kiwi.com deal was found by Cheapflights users on 2/25. 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.
Fri 3/206:04 pm
MCI
- ONT
1 stop21h 24m
Multiple Airlines
Tue 3/242:23 pm
ONT
- MCI
1 stop24h 46m
Multiple Airlines
Deal found 2/25![Multiple Airlines logo]()
$261
This Kiwi.com deal was found by Cheapflights users on 2/25. 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.
Sun 3/226:04 pm
MCI
- ONT
1 stop16h 02m
Multiple Airlines
Tue 3/242:23 pm
ONT
- MCI
1 stop24h 46m
Multiple Airlines
Deal found 2/25![Multiple Airlines logo]()
$262
This Frontier deal was found by Cheapflights users on 2/25. 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.
Sun 3/228:40 pm
MCI
- ONT
1 stop5h 19m
Frontier
Sat 4/46:20 am
ONT
- MCI
1 stop11h 38m
Frontier
Deal found 2/25![Frontier logo]()
$270
This Kiwi.com deal was found by Cheapflights users on 2/22. 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 3/256:04 pm
MCI
- ONT
1 stop15h 08m
Multiple Airlines
Mon 3/309:49 pm
ONT
- MCI
1 stop17h 20m
Multiple Airlines
Deal found 2/22![Multiple Airlines logo]()
$238
This Frontier deal was found by Cheapflights users on 2/25. 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.
Fri 3/278:40 pm
MCI
- ONT
1 stop5h 19m
Frontier
Fri 4/36:20 am
ONT
- MCI
1 stop11h 38m
Frontier
Deal found 2/25![Frontier logo]()
$250
This Booking.com deal was found by Cheapflights users on 2/25. 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 3/288:40 pm
MCI
- ONT
1 stop5h 19m
Frontier
Sat 4/46:20 am
ONT
- MCI
1 stop11h 38m
Frontier
Deal found 2/25![Frontier logo]()
$278
This Kiwi.com deal was found by Cheapflights users on 2/25. 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.
Sat 3/288:40 pm
MCI
- ONT
2 stops37h 26m
Multiple Airlines
Thu 4/210:27 pm
ONT
- MCI
1 stop16h 42m
Multiple Airlines
Deal found 2/25![Multiple Airlines logo]()
$282
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 February 26, 2026.
Search for one-way flight options from Kansas City to Ontario. Find affordable one-way fares based on user searches. Data last updated February 26, 2026.
This Trip.com deal was found by Cheapflights users on 2/25. 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.
Sat 5/22:51 pm
MCI
- ONT
1 stop11h 04m
Frontier
Deal found 2/25![Frontier logo]()
$60
This Trip.com deal was found by Cheapflights users on 2/23. 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.
Sat 4/252:51 pm
MCI
- ONT
1 stop11h 04m
Frontier
Deal found 2/23![Frontier logo]()
$61
This Trip.com deal was found by Cheapflights users on 2/25. 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.
Thu 4/302:15 pm
MCI
- ONT
1 stop11h 40m
Frontier
Deal found 2/25![Frontier logo]()
$87
This Frontier deal was found by Cheapflights users on 2/25. 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 4/78:43 pm
MCI
- ONT
1 stop5h 13m
Frontier
Deal found 2/25![Frontier logo]()
$95
This Trip.com deal was found by Cheapflights users on 2/25. 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.
Thu 4/232:15 pm
MCI
- ONT
1 stop11h 40m
Frontier
Deal found 2/25![Frontier logo]()
$97
This Trip.com deal was found by Cheapflights users on 2/25. 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.
Sat 4/182:51 pm
MCI
- ONT
1 stop11h 04m
Frontier
Deal found 2/25![Frontier logo]()
$98
This Trip.com deal was found by Cheapflights users on 2/23. 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.
Thu 4/162:15 pm
MCI
- ONT
1 stop11h 40m
Frontier
Deal found 2/23![Frontier logo]()
$99
This Frontier deal was found by Cheapflights users on 2/25. 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.
Mon 4/272:15 pm
MCI
- ONT
1 stop11h 40m
Frontier
Deal found 2/25![Frontier logo]()
$101
This CheapOair deal was found by Cheapflights users on 2/23. 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.
Sun 4/192:15 pm
MCI
- ONT
1 stop19h 16m
Frontier
Deal found 2/23![Frontier logo]()
$107
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 February 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $167 (Kiwi.com) |
One-way from | $60 (Trip.com) |
Popular in | December |
Cheapest in | October |
Average price | $406 |
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 February 26, 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
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Wed 4/1
6:15 am-11:59 pm
1 stop19h 44m
Ontario
Wed 4/15
6:00 am-11:59 pm
1 stop15h 59m
$285
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Wed 3/18
8:11 pm-11:51 pm
1 stop5h 40m
Ontario
Thu 3/26
5:09 pm-12:46 am
1 stop5h 37m
$323
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Wed 4/8
11:30 am-8:36 pm
2 stops11h 06m
Ontario
Sat 4/18
10:49 am-11:32 pm
2 stops10h 43m
$347
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Tue 4/7
9:00 am-6:02 pm
2 stops11h 02m
Ontario
Wed 4/15
6:05 am-2:19 pm
1 stop6h 14m
$390
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Tue 3/24
5:21 pm-8:50 pm
1 stop5h 29m
Ontario
Thu 3/26
1:50 pm-11:15 pm
1 stop7h 25m
$403
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Sat 3/21
5:30 pm-10:57 pm
1 stop7h 27m
Ontario
Thu 3/26
1:50 pm-11:15 pm
1 stop7h 25m
$403
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Wed 5/20
11:29 am-5:52 pm
2 stops8h 23m
Ontario
Mon 5/25
6:30 am-5:36 pm
1 stop9h 06m
$407
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Tue 3/10
8:11 pm-11:51 pm
1 stop5h 40m
Ontario
Tue 3/17
5:09 pm-12:46 am
1 stop5h 37m
$420
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Sat 5/16
5:52 pm-11:56 pm
1 stop8h 04m
Ontario
Sat 8/15
12:02 pm-11:59 pm
1 stop9h 57m
$420
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Tue 5/26
7:40 pm-11:34 pm
1 stop5h 54m
Ontario
Wed 5/27
9:50 am-5:33 pm
1 stop5h 43m
$427
Showing 1-10 of 23 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 February.
| 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
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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 February 26, 2026.
Peruse reviews from past customers who have flown with Southwest, United Airlines, and American 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.
Crew
8.6
Entertainment
7.5
Comfort
8.0
Overall
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Crew
8.6
Entertainment
7.5
Comfort
8.0
Overall
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Crew
8.6
Entertainment
7.5
Comfort
8.0
Overall
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Crew
8.6
Entertainment
7.5
Comfort
8.0
Overall
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Crew
8.6
Entertainment
7.5
Comfort
8.0
Overall
8.0
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
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 February 26, 2026.
Kansas City and Ontario flights
Browse other Kansas City and Ontario flight options. Last updated on February 26, 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 February 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$142 | Average$240 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$253 | Average$410 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$284 | Average$406 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$289 | Average$389 | FlexibilityNo cancel fee | On-time63% |