$82+ 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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
MCI — ONT
May 4 — May 111
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Kansas City to Ontario
Cheapest
Best
Last-minute
One-way
Cheapest flights from Kansas City to OntarioExplore the most affordable flight options available from Kansas City to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 4, 2026.
Explore the most affordable flight options available from Kansas City to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 4, 2026.
This Frontier deal was found by Cheapflights users on 4/4. 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 4/252:51 pm
MCI
- ONT
1 stop11h 04m
Frontier
Fri 5/112:59 am
ONT
- MCI
1 stop11h 07m
Frontier
Deal found 4/4![Frontier logo]()
$160
This Frontier deal was found by Cheapflights users on 4/4. 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 5/52:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Sat 5/96:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 4/4![Frontier logo]()
$185
This Booking.com deal was found by Cheapflights users on 4/3. 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.
Mon 5/42:15 pm
MCI
- ONT
1 stop21h 50m
Frontier
Mon 5/116:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 4/3![Frontier logo]()
$192
This Booking.com deal was found by Cheapflights users on 4/1. 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.
Mon 4/272:15 pm
MCI
- ONT
1 stop11h 40m
Frontier
Fri 5/15:33 pm
ONT
- MCI
1 stop18h 33m
Frontier
Deal found 4/1![Frontier logo]()
$198
This Frontier deal was found by Cheapflights users on 4/4. 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 4/252:51 pm
MCI
- ONT
1 stop11h 04m
Frontier
Sun 4/2612:59 am
ONT
- MCI
1 stop10h 31m
Frontier
Deal found 4/4![Frontier logo]()
$205
This Frontier deal was found by Cheapflights users on 3/31. 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 5/302:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Wed 6/36:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 3/31![Frontier logo]()
$210
This Booking.com deal was found by Cheapflights users on 4/1. 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.
Fri 5/152:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Tue 5/196:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 4/1![Frontier logo]()
$212
This Kiwi.com deal was found by Cheapflights users on 4/4. 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 Kiwi.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
Sat 5/95:59 pm
ONT
- MCI
2 stops41h 50m
Frontier
Deal found 4/4![Frontier logo]()
$215
This CheapOair deal was found by Cheapflights users on 4/1. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/122:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Sat 5/1610:50 am
ONT
- MCI
1 stop24h 59m
Frontier
Deal found 4/1![Frontier logo]()
$216
This Booking.com deal was found by Cheapflights users on 3/31. 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.
Tue 5/122:34 pm
MCI
- ONT
1 stop21h 31m
Frontier
Fri 5/1510:50 am
ONT
- MCI
1 stop24h 59m
Frontier
Deal found 3/31![Frontier logo]()
$218
This CheapOair deal was found by Cheapflights users on 4/1. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/302:15 pm
MCI
- ONT
1 stop19h 16m
Frontier
Mon 5/45:33 pm
ONT
- MCI
1 stop18h 16m
Frontier
Deal found 4/1![Frontier logo]()
$221
Best flights from Kansas City to OntarioDiscover carefully curated flight deals from Kansas City to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 4, 2026.
Discover carefully curated flight deals from Kansas City to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 4, 2026.
This United Airlines deal was found by Cheapflights users on 4/1. 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.
Wed 4/297:00 am
MCI
- ONT
1 stop7h 20m
United Airlines
Wed 5/61:40 pm
ONT
- MCI
1 stop5h 01m
United Airlines
Deal found 4/1![United Airlines logo]()
$371
This American Airlines deal was found by Cheapflights users on 4/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/289:39 am
MCI
- ONT
2 stops8h 43m
American Airlines
Tue 4/2811:59 pm
ONT
- MCI
1 stop8h 14m
American Airlines
Deal found 4/3![American Airlines logo]()
$376
This Alaska Airlines deal was found by Cheapflights users on 4/2. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/297:00 am
MCI
- ONT
1 stop9h 32m
Alaska Airlines
Mon 5/47:00 am
ONT
- MCI
1 stop7h 17m
Alaska Airlines
Deal found 4/2![Alaska Airlines logo]()
$425
This Delta deal was found by Cheapflights users on 4/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/191:20 pm
MCI
- ONT
1 stop10h 28m
Delta
Tue 7/75:16 pm
ONT
- MCI
1 stop4h 57m
Delta
Deal found 4/4![Delta logo]()
$456
This Alaska Airlines deal was found by Cheapflights users on 4/3. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/255:50 pm
MCI
- ONT
1 stop8h 01m
Alaska Airlines
Sat 7/47:00 am
ONT
- MCI
1 stop7h 53m
Alaska Airlines
Deal found 4/3![Alaska Airlines logo]()
$445
This United Airlines deal was found by Cheapflights users on 4/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/51:50 pm
MCI
- ONT
2 stops11h 09m
United Airlines
Wed 5/66:59 pm
ONT
- MCI
2 stops11h 42m
United Airlines
Deal found 4/2![United Airlines logo]()
$472
This Delta deal was found by Cheapflights users on 3/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1612:25 pm
MCI
- ONT
1 stop8h 08m
Delta
Tue 4/216:00 am
ONT
- MCI
1 stop5h 20m
Delta
Deal found 3/31![Delta logo]()
$479
This United Airlines deal was found by Cheapflights users on 3/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/98:00 am
MCI
- ONT
2 stops14h 36m
United Airlines
Wed 5/136:00 am
ONT
- MCI
1 stop6h 01m
United Airlines
Deal found 3/31![United Airlines logo]()
$479
This Delta deal was found by Cheapflights users on 3/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/173:04 pm
MCI
- ONT
1 stop7h 56m
Delta
Tue 4/212:20 pm
ONT
- MCI
1 stop7h 23m
Delta
Deal found 3/31![Delta logo]()
$479
This Alaska Airlines deal was found by Cheapflights users on 3/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/215:50 pm
MCI
- ONT
1 stop18h 18m
Alaska Airlines
Thu 4/237:00 am
ONT
- MCI
1 stop7h 17m
Alaska Airlines
Deal found 3/30![Alaska Airlines logo]()
$484
This Alaska Airlines deal was found by Cheapflights users on 4/3. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/287:00 am
MCI
- ONT
2 stops9h 19m
Alaska Airlines
Tue 4/283:26 pm
ONT
- MCI
2 stops22h 51m
Alaska Airlines
Deal found 4/3![Alaska Airlines logo]()
$488
Last-minute flights from Kansas City to OntarioDiscover last-minute flight deals from Kansas City to Ontario. Data last updated April 4, 2026 and is based on user searches.
Discover last-minute flight deals from Kansas City to Ontario. Data last updated April 4, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 3/30. 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 Frontier 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
Fri 4/2412:59 am
ONT
- MCI
1 stop11h 07m
Frontier
Deal found 3/30![Frontier logo]()
$205
This Frontier deal was found by Cheapflights users on 3/30. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/242:15 pm
MCI
- ONT
1 stop11h 40m
Frontier
Tue 5/56:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 3/30![Frontier logo]()
$185
This Frontier deal was found by Cheapflights users on 3/30. 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 Frontier 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
Tue 5/56:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 3/30![Frontier logo]()
$160
This Booking.com deal was found by Cheapflights users on 4/1. 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.
Mon 4/272:15 pm
MCI
- ONT
1 stop11h 40m
Frontier
Fri 5/15:33 pm
ONT
- MCI
1 stop18h 33m
Frontier
Deal found 4/1![Frontier logo]()
$198
This Kiwi.com deal was found by Cheapflights users on 4/4. 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 Kiwi.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
Sat 5/95:59 pm
ONT
- MCI
2 stops41h 50m
Frontier
Deal found 4/4![Frontier logo]()
$215
This Booking.com deal was found by Cheapflights users on 4/3. 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.
Mon 5/42:15 pm
MCI
- ONT
1 stop21h 50m
Frontier
Mon 5/116:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 4/3![Frontier logo]()
$192
This CheapOair deal was found by Cheapflights users on 3/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/62:34 pm
MCI
- ONT
1 stop21h 31m
Frontier
Sat 5/96:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 3/30![Frontier logo]()
$196
This CheapOair deal was found by Cheapflights users on 4/1. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/122:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Sat 5/1610:50 am
ONT
- MCI
1 stop24h 59m
Frontier
Deal found 4/1![Frontier logo]()
$216
This Booking.com deal was found by Cheapflights users on 3/31. 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.
Tue 5/122:34 pm
MCI
- ONT
1 stop21h 31m
Frontier
Fri 5/1510:50 am
ONT
- MCI
1 stop24h 59m
Frontier
Deal found 3/31![Frontier logo]()
$218
This Booking.com deal was found by Cheapflights users on 4/1. 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.
Fri 5/152:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Tue 5/196:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 4/1![Frontier logo]()
$212
This Frontier deal was found by Cheapflights users on 3/31. 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 5/302:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Tue 6/96:00 am
ONT
- MCI
1 stop5h 00m
Frontier
Deal found 3/31![Frontier logo]()
$210
One-way flights from Kansas City to OntarioSearch for one-way flight options from Kansas City to Ontario. Find affordable one-way fares based on user searches. Data last updated April 4, 2026.
Search for one-way flight options from Kansas City to Ontario. Find affordable one-way fares based on user searches. Data last updated April 4, 2026.
This Trip.com deal was found by Cheapflights users on 4/3. 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 5/132:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Deal found 4/3![Frontier logo]()
$82
This Super.com deal was found by Cheapflights users on 3/31. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/62:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Deal found 3/31![Frontier logo]()
$85
This Frontier deal was found by Cheapflights users on 4/1. 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.
Fri 4/242:15 pm
MCI
- ONT
1 stop11h 40m
Frontier
Deal found 4/1![Frontier logo]()
$86
This Super.com deal was found by Cheapflights users on 4/1. 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 Super.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
Deal found 4/1![Frontier logo]()
$105
This Frontier deal was found by Cheapflights users on 4/3. 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 Frontier 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 4/3![Frontier logo]()
$106
This Trip.com deal was found by Cheapflights users on 4/4. 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 Trip.com 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 4/4![Frontier logo]()
$108
This Super.com deal was found by Cheapflights users on 4/1. 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 Super.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 4/1![Frontier logo]()
$109
This Frontier deal was found by Cheapflights users on 3/31. 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 4/118:43 pm
MCI
- ONT
1 stop5h 13m
Frontier
Deal found 3/31![Frontier logo]()
$125
This iWofly deal was found by Cheapflights users on 4/3. 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/272:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Deal found 4/3![Frontier logo]()
$127
This Super.com deal was found by Cheapflights users on 4/2. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/142:34 pm
MCI
- ONT
1 stop21h 31m
Frontier
Deal found 4/2![Frontier logo]()
$129
Find flight deals from Kansas City to Ontario
Discover tips and strategies to find the most affordable flight options for your journey from Kansas City (MCI) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $160 (Expedia) |
One-way from | $82 (Trip.com) |
Popular in | December |
Cheapest in | October |
Average price | $360 |
Cheapflights Fare Finder
Customize your flight search to find flights from Kansas City to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 4, 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
Quickest round-trip
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Wed 4/29
7:00 am-12:20 pm
1 stop7h 20m
Ontario
Wed 5/6
1:40 pm-8:41 pm
1 stop5h 01m
$371
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Tue 4/28
9:39 am-4:22 pm
2 stops8h 43m
Ontario
Tue 4/28
11:59 pm-10:13 am
1 stop8h 14m
$376
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Wed 4/29
7:00 am-2:32 pm
1 stop9h 32m
Ontario
Mon 5/4
7:00 am-4:17 pm
1 stop7h 17m
$425
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Thu 6/25
5:50 pm-11:51 pm
1 stop8h 01m
Ontario
Sat 7/4
7:00 am-4:53 pm
1 stop7h 53m
$445
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Fri 6/19
1:20 pm-9:48 pm
1 stop10h 28m
Ontario
Tue 7/7
5:16 pm-12:13 am
1 stop4h 57m
$456
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Tue 5/5
1:50 pm-10:59 pm
2 stops11h 09m
Ontario
Wed 5/6
6:59 pm-8:41 am
2 stops11h 42m
$472
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Thu 4/16
12:25 pm-6:33 pm
1 stop8h 08m
Ontario
Tue 4/21
6:00 am-1:20 pm
1 stop5h 20m
$479
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Sat 5/9
8:00 am-8:36 pm
2 stops14h 36m
Ontario
Wed 5/13
6:00 am-2:01 pm
1 stop6h 01m
$479
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Fri 4/17
3:04 pm-9:00 pm
1 stop7h 56m
Ontario
Tue 4/21
2:20 pm-11:43 pm
1 stop7h 23m
$479
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Tue 4/21
5:50 pm-10:08 am
1 stop18h 18m
Ontario
Thu 4/23
7:00 am-4:17 pm
1 stop7h 17m
$484
Showing 1-10 of 20 resultsSorted by cheapest first
Compare providers for flights from Kansas City to Ontario
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Kansas City to Ontario in April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Kansas City-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Kansas City-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Kansas City-Ontario flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Kansas City-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Kansas City-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Kansas City to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Kansas City with our price prediction graph.
MCI-ONT
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Kansas City to Ontario
Prices
More
What is the cheapest month to book a flight from Kansas City to Ontario?
Currently, August is the cheapest month in which you can book a flight from Kansas City to Ontario (average of $79). Flying from Kansas City to Ontario in April is currently the most expensive (average of $173). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Kansas City to Ontario?
What’s the top layover airport for flights from Kansas City to Ontario?
Share of 1-stop round-trip flights from Kansas City to Ontario chosen by Cheapflights users in the past 12 months, using the same layover each way.
Denver (DEN) – chosen by Cheapflights users on 67% of 1-stop itineraries from Kansas City to Ontario on Cheapflights.
What’s the cheapest layover airport for flights from Kansas City to Ontario?
Average round-trip fare for 1-stop flights from Kansas City to Ontario, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Denver (DEN) is the most affordable 1-stop option, with an average round-trip price of $163.
What’s the fastest layover option from Kansas City to Ontario?
Shortest average travel time for 1-stop one-way flights from Kansas City to Ontario, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Phoenix (PHX) have the shortest average one-way travel time for 1-stop routes: 4h 55m.
Which airport typically offers the quickest layover for flights from Kansas City to Ontario?
Average layover duration for 1-stop one-way flights from Kansas City to Ontario, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Phoenix (PHX) offer the fastest connection on this route, with an average layover time of 1h 03m.
Reviews of airlines servicing Ontario
Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated April 4, 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.
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Overall
8.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Overall
8.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Overall
8.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Overall
8.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Crew
8.6
Boarding
8.1
Entertainment
7.5
Overall
8.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from Kansas City to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Ontario flight routes
Other flight options
Popular flights
Alternative routes for Kansas City to Ontario
See prices for flight routes from nearby airports that may be better suited for you.
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 April 4, 2026.
Kansas City and Ontario flights
Browse other Kansas City and Ontario flight options. Last updated on April 4, 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 April 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$142 | Average$280 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$253 | Average$401 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$284 | Average$404 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$289 | Average$394 | FlexibilityNo cancel fee | On-time63% |