$109+ 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 8/19. Fares are subject to change and may not be available on all flights or dates of travel.
MCI — ONT
Jul 10 — Jul 171
Round-trip
1 adult, Economy
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Find cheap flights from Kansas City to Ontario with Cheapflights
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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 June 10, 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 June 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/6. 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 9/92:17 pm
MCI
- ONT
1 stop11h 38m
Frontier
Tue 9/222:55 pm
ONT
- MCI
1 stop20h 27m
Frontier
Deal found 6/6![Frontier logo]()
$220
This Frontier deal was found by Cheapflights users on 6/8. 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 8/241:50 pm
MCI
- ONT
1 stop7h 58m
Frontier
Wed 8/266:00 am
ONT
- MCI
1 stop5h 00m
Frontier
Deal found 6/8![Frontier logo]()
$242
This Expedia deal was found by Cheapflights users on 6/10. 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 7/111:45 pm
MCI
- ONT
1 stop22h 19m
Frontier
Wed 7/153:40 pm
ONT
- MCI
1 stop22h 07m
Frontier
Deal found 6/10![Frontier logo]()
$244
This Frontier deal was found by Cheapflights users on 6/10. 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 10/262:17 pm
MCI
- ONT
1 stop11h 38m
Frontier
Wed 11/116:15 am
ONT
- MCI
1 stop5h 07m
Frontier
Deal found 6/10![Frontier logo]()
$247
This CheapOair deal was found by Cheapflights users on 6/9. 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.
Mon 8/174:32 pm
MCI
- ONT
1 stop24h 37m
Frontier
Sat 8/226:00 am
ONT
- MCI
1 stop5h 00m
Frontier
Deal found 6/9![Frontier logo]()
$254
This Frontier deal was found by Cheapflights users on 6/9. 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.
Wed 9/92:17 pm
MCI
- ONT
1 stop11h 38m
Frontier
Wed 9/166:00 am
ONT
- MCI
1 stop5h 22m
Frontier
Deal found 6/9![Frontier logo]()
$255
This Booking.com deal was found by Cheapflights users on 6/6. 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 8/151:45 pm
MCI
- ONT
1 stop22h 19m
Frontier
Sat 8/226:00 am
ONT
- MCI
1 stop5h 00m
Frontier
Deal found 6/6![Frontier logo]()
$256
This Frontier deal was found by Cheapflights users on 6/7. 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 7/141:45 pm
MCI
- ONT
1 stop12h 05m
Frontier
Tue 7/216:00 am
ONT
- MCI
1 stop5h 00m
Frontier
Deal found 6/7![Frontier logo]()
$257
This Booking.com deal was found by Cheapflights users on 6/8. 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.
Wed 7/11:45 pm
MCI
- ONT
1 stop22h 20m
Frontier
Wed 7/83:40 pm
ONT
- MCI
1 stop22h 07m
Frontier
Deal found 6/8![Frontier logo]()
$259
This Frontier deal was found by Cheapflights users on 6/10. 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 10/272:17 pm
MCI
- ONT
1 stop11h 38m
Frontier
Thu 11/126:15 am
ONT
- MCI
1 stop5h 07m
Frontier
Deal found 6/10![Frontier logo]()
$260
This Expedia deal was found by Cheapflights users on 6/9. 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.
Wed 7/81:45 pm
MCI
- ONT
1 stop22h 19m
Frontier
Tue 7/146:00 am
ONT
- MCI
1 stop5h 00m
Frontier
Deal found 6/9![Frontier logo]()
$261
This Frontier deal was found by Cheapflights users on 6/10. 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 10/222:17 pm
MCI
- ONT
1 stop11h 38m
Frontier
Mon 10/266:00 am
ONT
- MCI
1 stop5h 22m
Frontier
Deal found 6/10![Frontier logo]()
$262
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 June 10, 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 June 10, 2026.
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Thu 11/263:22 pm
MCI
- ONT
1 stop9h 04m
United Airlines
Sat 12/56:02 am
ONT
- MCI
1 stop8h 33m
United Airlines
Deal found 6/10![United Airlines logo]()
$389
This Frontier deal was found by Cheapflights users on 6/5. 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 6/261:45 pm
MCI
- ONT
1 stop12h 04m
Frontier
Wed 7/16:00 am
ONT
- MCI
1 stop5h 00m
Frontier
Deal found 6/5![Frontier logo]()
$417
This Alaska Airlines deal was found by Cheapflights users on 6/6. 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 10/146:13 am
MCI
- ONT
1 stop9h 06m
Alaska Airlines
Wed 10/145:30 pm
ONT
- MCI
1 stop21h 48m
Alaska Airlines
Deal found 6/6![Alaska Airlines logo]()
$427
This Southwest deal was found by Cheapflights users on 6/7. 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.
Fri 9/46:20 am
MCI
- ONT
1 stop5h 00m
Southwest
Tue 9/88:35 am
ONT
- MCI
2 stops6h 50m
Southwest
Deal found 6/7![Southwest logo]()
$452
This Delta deal was found by Cheapflights users on 6/7. 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 11/257:40 pm
MCI
- ONT
1 stop6h 08m
Delta
Sat 11/285:05 pm
ONT
- MCI
1 stop5h 16m
Delta
Deal found 6/7![Delta logo]()
$479
This United Airlines deal was found by Cheapflights users on 6/9. 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 8/116:00 am
MCI
- ONT
2 stops8h 12m
United Airlines
Wed 8/125:00 am
ONT
- MCI
1 stop5h 37m
United Airlines
Deal found 6/9![United Airlines logo]()
$394
This United Airlines deal was found by Cheapflights users on 6/6. 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 7/46:00 am
MCI
- ONT
2 stops8h 12m
United Airlines
Sat 7/111:50 pm
ONT
- MCI
1 stop6h 41m
United Airlines
Deal found 6/6![United Airlines logo]()
$397
This Southwest deal was found by Cheapflights users on 6/7. 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.
Fri 9/43:55 pm
MCI
- ONT
1 stop5h 30m
Southwest
Mon 9/75:15 am
ONT
- MCI
2 stops8h 20m
Southwest
Deal found 6/7![Southwest logo]()
$472
This United Airlines deal was found by Cheapflights users on 6/8. 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 8/241:02 pm
MCI
- ONT
2 stops11h 57m
United Airlines
Wed 8/265:00 am
ONT
- MCI
1 stop5h 37m
United Airlines
Deal found 6/8![United Airlines logo]()
$426
This Southwest deal was found by Cheapflights users on 6/10. 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.
Sat 6/206:25 pm
MCI
- ONT
1 stop6h 05m
Southwest
Fri 7/312:45 pm
ONT
- MCI
2 stops8h 35m
Southwest
Deal found 6/10![Southwest logo]()
$493
This United Airlines deal was found by Cheapflights users on 6/6. 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 8/155:13 pm
MCI
- ONT
1 stop5h 40m
United Airlines
Sat 8/2211:00 am
ONT
- MCI
2 stops10h 30m
United Airlines
Deal found 6/6![United Airlines logo]()
$478
Last-minute flights from Kansas City to OntarioDiscover last-minute flight deals from Kansas City to Ontario. Data last updated June 10, 2026 and is based on user searches.
Discover last-minute flight deals from Kansas City to Ontario. Data last updated June 10, 2026 and is based on user searches.
This Booking.com deal was found by Cheapflights users on 6/8. 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.
Wed 7/11:45 pm
MCI
- ONT
1 stop22h 20m
Frontier
Wed 7/83:40 pm
ONT
- MCI
1 stop22h 07m
Frontier
Deal found 6/8![Frontier logo]()
$259
This Booking.com deal was found by Cheapflights users on 6/9. 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.
Thu 7/21:45 pm
MCI
- ONT
1 stop22h 20m
Frontier
Wed 7/81:38 pm
ONT
- MCI
1 stop24h 09m
Frontier
Deal found 6/9![Frontier logo]()
$281
This Expedia deal was found by Cheapflights users on 6/6. 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.
Fri 7/31:45 pm
MCI
- ONT
1 stop22h 20m
Frontier
Wed 7/83:40 pm
ONT
- MCI
1 stop22h 07m
Frontier
Deal found 6/6![Frontier logo]()
$277
This Expedia deal was found by Cheapflights users on 6/9. 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.
Wed 7/81:45 pm
MCI
- ONT
1 stop22h 19m
Frontier
Tue 7/146:00 am
ONT
- MCI
1 stop5h 00m
Frontier
Deal found 6/9![Frontier logo]()
$261
This Booking.com deal was found by Cheapflights users on 6/10. 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.
Fri 7/101:45 pm
MCI
- ONT
1 stop22h 19m
Frontier
Wed 7/153:40 pm
ONT
- MCI
1 stop22h 07m
Frontier
Deal found 6/10![Frontier logo]()
$278
This Expedia deal was found by Cheapflights users on 6/10. 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 7/111:45 pm
MCI
- ONT
1 stop22h 19m
Frontier
Wed 7/153:40 pm
ONT
- MCI
1 stop22h 07m
Frontier
Deal found 6/10![Frontier logo]()
$244
This CheapOair deal was found by Cheapflights users on 6/9. 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.
Sat 7/111:45 pm
MCI
- ONT
1 stop22h 19m
Frontier
Tue 7/146:00 am
ONT
- MCI
1 stop5h 00m
Frontier
Deal found 6/9![Frontier logo]()
$267
This Travelocity deal was found by Cheapflights users on 6/6. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/131:45 pm
MCI
- ONT
1 stop12h 05m
Frontier
Tue 7/216:00 am
ONT
- MCI
1 stop5h 00m
Frontier
Deal found 6/6![Frontier logo]()
$276
This Frontier deal was found by Cheapflights users on 6/7. 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 7/141:45 pm
MCI
- ONT
1 stop12h 05m
Frontier
Tue 7/216:00 am
ONT
- MCI
1 stop5h 00m
Frontier
Deal found 6/7![Frontier logo]()
$257
This Booking.com deal was found by Cheapflights users on 6/8. 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.
Tue 7/141:45 pm
MCI
- ONT
1 stop22h 19m
Frontier
Thu 7/1611:52 am
ONT
- MCI
1 stop25h 55m
Frontier
Deal found 6/8![Frontier logo]()
$279
This Booking.com deal was found by Cheapflights users on 6/8. 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.
Wed 7/221:45 pm
MCI
- ONT
1 stop22h 19m
Frontier
Tue 7/286:00 am
ONT
- MCI
1 stop5h 00m
Frontier
Deal found 6/8![Frontier logo]()
$272
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 June 10, 2026.
Search for one-way flight options from Kansas City to Ontario. Find affordable one-way fares based on user searches. Data last updated June 10, 2026.
This Trip.com deal was found by Cheapflights users on 6/5. 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 8/191:45 pm
MCI
- ONT
1 stop12h 04m
Frontier
Deal found 6/5![Frontier logo]()
$109
This Trip.com deal was found by Cheapflights users on 6/5. 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 9/302:17 pm
MCI
- ONT
1 stop11h 38m
Frontier
Deal found 6/5![Frontier logo]()
$116
This Trip.com deal was found by Cheapflights users on 6/9. 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 7/141:45 pm
MCI
- ONT
1 stop12h 05m
Frontier
Deal found 6/9![Frontier logo]()
$117
This Trip.com deal was found by Cheapflights users on 6/7. 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.
Mon 8/31:45 pm
MCI
- ONT
1 stop12h 05m
Frontier
Deal found 6/7![Frontier logo]()
$119
This Trip.com deal was found by Cheapflights users on 6/7. 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 8/61:45 pm
MCI
- ONT
1 stop12h 05m
Frontier
Deal found 6/7![Frontier logo]()
$120
This Super.com deal was found by Cheapflights users on 6/9. 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 8/201:50 pm
MCI
- ONT
1 stop7h 58m
Frontier
Deal found 6/9![Frontier logo]()
$121
This Frontier deal was found by Cheapflights users on 6/9. 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 8/241:50 pm
MCI
- ONT
1 stop7h 58m
Frontier
Deal found 6/9![Frontier logo]()
$122
This Trip.com deal was found by Cheapflights users on 6/5. 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.
Mon 7/134:32 pm
MCI
- ONT
1 stop17h 31m
Frontier
Deal found 6/5![Frontier logo]()
$124
This Southwest deal was found by Cheapflights users on 6/9. 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.
Tue 8/48:15 am
MCI
- ONT
1 stop5h 35m
Southwest
Deal found 6/9![Southwest logo]()
$125
This Frontier deal was found by Cheapflights users on 6/10. 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 10/62:17 pm
MCI
- ONT
1 stop11h 38m
Frontier
Deal found 6/10![Frontier logo]()
$126
This Frontier deal was found by Cheapflights users on 6/9. 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 8/81:45 pm
MCI
- ONT
1 stop12h 05m
Frontier
Deal found 6/9![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 June 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $220 (Kiwi.com) |
One-way from | $109 (Trip.com) |
Popular in | May |
Cheapest in | October |
Average price | $452 |
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 June 10, 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 11/26
3:22 pm-10:26 pm
1 stop9h 04m
Ontario
Sat 12/5
6:02 am-4:35 pm
1 stop8h 33m
$389
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Tue 8/11
6:00 am-12:12 pm
2 stops8h 12m
Ontario
Wed 8/12
5:00 am-12:37 pm
1 stop5h 37m
$394
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Sat 7/4
6:00 am-12:12 pm
2 stops8h 12m
Ontario
Sat 7/11
1:50 pm-10:31 pm
1 stop6h 41m
$397
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Fri 6/26
1:45 pm-11:49 pm
1 stop12h 04m
Ontario
Wed 7/1
6:00 am-1:00 pm
1 stop5h 00m
$417
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Mon 8/24
1:02 pm-10:59 pm
2 stops11h 57m
Ontario
Wed 8/26
5:00 am-12:37 pm
1 stop5h 37m
$426
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Wed 10/14
6:13 am-1:19 pm
1 stop9h 06m
Ontario
Wed 10/14
5:30 pm-5:18 pm
1 stop21h 48m
$427
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Fri 9/4
6:20 am-9:20 am
1 stop5h 00m
Ontario
Tue 9/8
8:35 am-5:25 pm
2 stops6h 50m
$452
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Fri 9/4
3:55 pm-7:25 pm
1 stop5h 30m
Ontario
Mon 9/7
5:15 am-3:35 pm
2 stops8h 20m
$472
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Sat 8/15
5:13 pm-8:53 pm
1 stop5h 40m
Ontario
Sat 8/22
11:00 am-11:30 pm
2 stops10h 30m
$478
Quickest round-trip
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Wed 11/25
7:40 pm-11:48 pm
1 stop6h 08m
Ontario
Sat 11/28
5:05 pm-12:21 am
1 stop5h 16m
$479
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 June.
| 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 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
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 May is currently the most expensive (average of $472). 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?
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 June 10, 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
Entertainment
7.5
Food
7.0
Comfort
8.0
Overall
7.9
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Overall
7.9
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Overall
7.9
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Overall
7.9
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Boarding
8.1
Entertainment
7.5
Food
7.0
Comfort
8.0
Overall
7.9
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
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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Alternative routes for Kansas City to Ontario
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Complete your trip
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Search flights from Kansas City to Ontario by cabin class
Find flights from Kansas City to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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 June 10, 2026.
Kansas City and Ontario flights
Browse other Kansas City and Ontario flight options. Last updated on June 10, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 June 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$94 | Average$290 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$247 | Average$406 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$253 | Average$360 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$269 | Average$421 | FlexibilityNo cancel fee | On-time63% |