$78+ 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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
MCI — ONT
Jul 5 — Jul 121
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 5, 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 5, 2026.
This Frontier deal was found by Cheapflights users on 6/2. 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 10/132:17 pm
MCI
- ONT
1 stop11h 38m
Frontier
Tue 10/206:00 am
ONT
- MCI
1 stop5h 22m
Frontier
Deal found 6/2![Frontier logo]()
$252
This Booking.com deal was found by Cheapflights users on 6/1. 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 7/81:38 pm
ONT
- MCI
1 stop24h 09m
Frontier
Deal found 6/1![Frontier logo]()
$254
This Kiwi.com deal was found by Cheapflights users on 5/31. 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 8/201:45 pm
MCI
- ONT
1 stop12h 04m
Frontier
Tue 8/2510:50 am
ONT
- MCI
1 stop24h 10m
Frontier
Deal found 5/31![Frontier logo]()
$256
This Trip.com deal was found by Cheapflights users on 6/3. 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 8/51:45 pm
MCI
- ONT
1 stop12h 05m
Frontier
Sun 8/911:52 am
ONT
- MCI
1 stop25h 55m
Frontier
Deal found 6/3![Frontier logo]()
$260
This Frontier deal was found by Cheapflights users on 6/4. 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 8/51:45 pm
MCI
- ONT
1 stop12h 05m
Frontier
Tue 8/116:00 am
ONT
- MCI
1 stop5h 00m
Frontier
Deal found 6/4![Frontier logo]()
$261
This Booking.com deal was found by Cheapflights users on 6/3. 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 7/151:45 pm
MCI
- ONT
1 stop22h 19m
Frontier
Wed 7/223:40 pm
ONT
- MCI
1 stop22h 07m
Frontier
Deal found 6/3![Frontier logo]()
$262
This Frontier deal was found by Cheapflights users on 5/31. 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 10/32:17 pm
MCI
- ONT
1 stop11h 38m
Frontier
Wed 10/76:00 am
ONT
- MCI
1 stop5h 22m
Frontier
Deal found 5/31![Frontier logo]()
$265
This Frontier deal was found by Cheapflights users on 6/4. 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 8/61:45 pm
MCI
- ONT
1 stop12h 05m
Frontier
Tue 8/116:00 am
ONT
- MCI
1 stop5h 00m
Frontier
Deal found 6/4![Frontier logo]()
$268
This Expedia deal was found by Cheapflights users on 6/3. 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 7/221:45 pm
MCI
- ONT
1 stop22h 19m
Frontier
Tue 7/2810:49 am
ONT
- MCI
1 stop24h 11m
Frontier
Deal found 6/3![Frontier logo]()
$270
This Booking.com deal was found by Cheapflights users on 6/1. 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 7/151:38 pm
ONT
- MCI
1 stop24h 09m
Frontier
Deal found 6/1![Frontier logo]()
$272
This Frontier deal was found by Cheapflights users on 6/4. 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 7/181:45 pm
MCI
- ONT
1 stop12h 05m
Frontier
Tue 7/216:00 am
ONT
- MCI
1 stop5h 00m
Frontier
Deal found 6/4![Frontier logo]()
$275
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 5, 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 5, 2026.
This Frontier deal was found by Cheapflights users on 6/2. 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 7/301:45 pm
MCI
- ONT
1 stop12h 05m
Frontier
Tue 8/46:00 am
ONT
- MCI
1 stop5h 00m
Frontier
Deal found 6/2![Frontier logo]()
$280
This Southwest deal was found by Cheapflights users on 6/4. 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 7/41:35 pm
MCI
- ONT
2 stops7h 30m
Southwest
Sat 7/1110:30 am
ONT
- MCI
1 stop5h 20m
Southwest
Deal found 6/4![Southwest logo]()
$434
This United Airlines deal was found by Cheapflights users on 5/30. 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 8/159:14 am
MCI
- ONT
2 stops12h 47m
United Airlines
Wed 8/199:01 am
ONT
- MCI
2 stops12h 29m
United Airlines
Deal found 5/30![United Airlines logo]()
$445
This Alaska Airlines deal was found by Cheapflights users on 6/4. 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.
Fri 6/195:50 pm
MCI
- ONT
1 stop8h 01m
Alaska Airlines
Sat 6/207:00 am
ONT
- MCI
1 stop7h 53m
Alaska Airlines
Deal found 6/4![Alaska Airlines logo]()
$510
This Delta deal was found by Cheapflights users on 6/2. 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 7/317:05 am
MCI
- ONT
1 stop7h 05m
Delta
Fri 7/315:10 pm
ONT
- MCI
1 stop5h 03m
Delta
Deal found 6/2![Delta logo]()
$521
This Kiwi.com deal was found by Cheapflights users on 5/31. 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 8/201:45 pm
MCI
- ONT
1 stop12h 04m
Frontier
Tue 8/253:34 pm
ONT
- MCI
2 stops23h 50m
Frontier
Deal found 5/31![Frontier logo]()
$298
This Booking.com deal was found by Cheapflights users on 6/2. 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 6/271:45 pm
MCI
- ONT
1 stop22h 20m
Frontier
Sun 7/511:52 am
ONT
- MCI
1 stop25h 55m
Frontier
Deal found 6/2![Frontier logo]()
$316
This United Airlines deal was found by Cheapflights users on 6/4. 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 7/11:40 pm
MCI
- ONT
2 stops10h 57m
United Airlines
Wed 7/85:00 am
ONT
- MCI
1 stop5h 38m
United Airlines
Deal found 6/4![United Airlines logo]()
$486
This Southwest deal was found by Cheapflights users on 5/31. 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.
Thu 7/236:55 am
MCI
- ONT
2 stops6h 25m
Southwest
Mon 7/2712:45 pm
ONT
- MCI
2 stops8h 40m
Southwest
Deal found 5/31![Southwest logo]()
$497
This Frontier deal was found by Cheapflights users on 6/4. 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 6/4![Frontier logo]()
$419
This United Airlines deal was found by Cheapflights users on 6/1. 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 7/26:00 am
MCI
- ONT
2 stops8h 12m
United Airlines
Wed 7/85:00 am
ONT
- MCI
1 stop5h 38m
United Airlines
Deal found 6/1![United Airlines logo]()
$524
Last-minute flights from Kansas City to OntarioDiscover last-minute flight deals from Kansas City to Ontario. Data last updated June 5, 2026 and is based on user searches.
Discover last-minute flight deals from Kansas City to Ontario. Data last updated June 5, 2026 and is based on user searches.
This Booking.com deal was found by Cheapflights users on 6/1. 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 7/81:38 pm
ONT
- MCI
1 stop24h 09m
Frontier
Deal found 6/1![Frontier logo]()
$254
This Booking.com deal was found by Cheapflights users on 6/1. 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 7/151:38 pm
ONT
- MCI
1 stop24h 09m
Frontier
Deal found 6/1![Frontier logo]()
$272
This Booking.com deal was found by Cheapflights users on 6/2. 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
Sun 7/510:49 am
ONT
- MCI
1 stop24h 11m
Frontier
Deal found 6/2![Frontier logo]()
$282
This Booking.com deal was found by Cheapflights users on 6/1. 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 7/71:45 pm
MCI
- ONT
1 stop22h 19m
Frontier
Sat 7/116:00 am
ONT
- MCI
1 stop5h 00m
Frontier
Deal found 6/1![Frontier logo]()
$283
This Frontier deal was found by Cheapflights users on 6/1. 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
Mon 7/276:00 am
ONT
- MCI
1 stop5h 00m
Frontier
Deal found 6/1![Frontier logo]()
$280
This Booking.com deal was found by Cheapflights users on 6/3. 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 7/151:45 pm
MCI
- ONT
1 stop22h 19m
Frontier
Wed 7/223:40 pm
ONT
- MCI
1 stop22h 07m
Frontier
Deal found 6/3![Frontier logo]()
$262
This Booking.com deal was found by Cheapflights users on 5/31. 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 7/151:45 pm
MCI
- ONT
1 stop22h 19m
Frontier
Thu 7/303:40 pm
ONT
- MCI
1 stop22h 07m
Frontier
Deal found 5/31![Frontier logo]()
$278
This Frontier deal was found by Cheapflights users on 6/4. 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 7/181:45 pm
MCI
- ONT
1 stop12h 05m
Frontier
Tue 7/216:00 am
ONT
- MCI
1 stop5h 00m
Frontier
Deal found 6/4![Frontier logo]()
$275
This Frontier deal was found by Cheapflights users on 6/4. 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 7/211:45 pm
MCI
- ONT
1 stop12h 05m
Frontier
Sat 7/256:00 am
ONT
- MCI
1 stop5h 00m
Frontier
Deal found 6/4![Frontier logo]()
$284
This Expedia deal was found by Cheapflights users on 6/3. 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 7/221:45 pm
MCI
- ONT
1 stop22h 19m
Frontier
Tue 7/2810:49 am
ONT
- MCI
1 stop24h 11m
Frontier
Deal found 6/3![Frontier logo]()
$270
This Frontier deal was found by Cheapflights users on 6/2. 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 7/291:45 pm
MCI
- ONT
1 stop12h 05m
Frontier
Thu 8/66:00 am
ONT
- MCI
1 stop5h 00m
Frontier
Deal found 6/2![Frontier logo]()
$277
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 5, 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 5, 2026.
This Trip.com deal was found by Cheapflights users on 6/2. 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 8/41:45 pm
MCI
- ONT
1 stop12h 05m
Frontier
Deal found 6/2![Frontier logo]()
$78
This Trip.com deal was found by Cheapflights users on 6/3. 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 8/291:45 pm
MCI
- ONT
1 stop12h 04m
Frontier
Deal found 6/3![Frontier logo]()
$81
This Trip.com deal was found by Cheapflights users on 6/3. 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 8/51:45 pm
MCI
- ONT
1 stop12h 05m
Frontier
Deal found 6/3![Frontier logo]()
$93
This Kiwi.com deal was found by Cheapflights users on 6/3. 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.
Mon 8/106:07 pm
MCI
- ONT
2 stops41h 57m
Frontier
Deal found 6/3![Frontier logo]()
$99
This Trip.com deal was found by Cheapflights users on 6/3. 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 9/21:45 pm
MCI
- ONT
1 stop12h 04m
Frontier
Deal found 6/3![Frontier logo]()
$108
This Trip.com deal was found by Cheapflights users on 6/2. 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 8/121:45 pm
MCI
- ONT
1 stop12h 05m
Frontier
Deal found 6/2![Frontier logo]()
$109
This Trip.com deal was found by Cheapflights users on 6/3. 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 6/3![Frontier logo]()
$115
This Trip.com deal was found by Cheapflights users on 5/30. 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 5/30![Frontier logo]()
$119
This Trip.com deal was found by Cheapflights users on 6/3. 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 6/3![Frontier logo]()
$120
This Trip.com deal was found by Cheapflights users on 6/2. 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 8/311:45 pm
MCI
- ONT
1 stop12h 04m
Frontier
Deal found 6/2![Frontier logo]()
$121
This Trip.com deal was found by Cheapflights users on 6/3. 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 8/221:45 pm
MCI
- ONT
1 stop12h 04m
Frontier
Deal found 6/3![Frontier logo]()
$123
This Trip.com deal was found by Cheapflights users on 6/3. 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 8/151:45 pm
MCI
- ONT
1 stop12h 05m
Frontier
Deal found 6/3![Frontier logo]()
$124
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 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $254 (Booking.com) |
One-way from | $78 (Trip.com) |
Popular in | May |
Cheapest in | October |
Average price | $410 |
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 5, 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 7/30
1:45 pm-11:50 pm
1 stop12h 05m
Ontario
Tue 8/4
6:00 am-1:00 pm
1 stop5h 00m
$280
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Thu 8/20
1:45 pm-11:49 pm
1 stop12h 04m
Ontario
Tue 8/25
3:34 pm-5:24 pm
2 stops23h 50m
$298
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Sat 6/27
1:45 pm-10:05 am
1 stop22h 20m
Ontario
Sun 7/5
11:52 am-3:47 pm
1 stop25h 55m
$316
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
$419
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Sat 7/4
1:35 pm-7:05 pm
2 stops7h 30m
Ontario
Sat 7/11
10:30 am-5:50 pm
1 stop5h 20m
$434
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Sat 8/15
9:14 am-8:01 pm
2 stops12h 47m
Ontario
Wed 8/19
9:01 am-11:30 pm
2 stops12h 29m
$445
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Wed 7/1
1:40 pm-10:37 pm
2 stops10h 57m
Ontario
Wed 7/8
5:00 am-12:38 pm
1 stop5h 38m
$486
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Thu 7/23
6:55 am-11:20 am
2 stops6h 25m
Ontario
Mon 7/27
12:45 pm-11:25 pm
2 stops8h 40m
$497
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Fri 6/19
5:50 pm-11:51 pm
1 stop8h 01m
Ontario
Sat 6/20
7:00 am-4:53 pm
1 stop7h 53m
$510
Quickest round-trip
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Fri 7/31
7:05 am-12:10 pm
1 stop7h 05m
Ontario
Fri 7/31
5:10 pm-12:13 am
1 stop5h 03m
$521
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 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 $446). 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 5, 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.
Comfort
8.0
Overall
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Overall
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Overall
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Overall
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Overall
8.0
Food
7.0
Entertainment
7.5
Boarding
8.1
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
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
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 5, 2026.
Kansas City and Ontario flights
Browse other Kansas City and Ontario flight options. Last updated on June 5, 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 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$94 | Average$280 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$247 | Average$404 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$253 | Average$360 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$269 | Average$416 | FlexibilityNo cancel fee | On-time63% |