$85+ 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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
MCI — ONT
May 22 — May 291
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 22, 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 22, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/122:34 pm
MCI
- ONT
1 stop21h 31m
Frontier
Tue 6/210:50 am
ONT
- MCI
1 stop24h 59m
Frontier
Deal found 4/17![Frontier logo]()
$164
This Frontier deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/52:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Tue 5/126:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 4/17![Frontier logo]()
$180
This Frontier deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier 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
Tue 5/196:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 4/21![Frontier logo]()
$185
This Frontier deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier 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
Sun 5/106:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 4/21![Frontier logo]()
$200
This Booking.com deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/72:34 pm
MCI
- ONT
1 stop21h 31m
Frontier
Sun 5/106:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 4/21![Frontier logo]()
$202
This Expedia deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/82:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Tue 5/126:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 4/21![Frontier logo]()
$206
This Booking.com deal was found by Cheapflights users on 4/20. 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 5/202:34 pm
MCI
- ONT
1 stop21h 31m
Frontier
Wed 5/276:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 4/20![Frontier logo]()
$217
This Booking.com deal was found by Cheapflights users on 4/20. 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 5/112:34 pm
MCI
- ONT
1 stop21h 31m
Frontier
Sat 5/2310:50 am
ONT
- MCI
1 stop24h 59m
Frontier
Deal found 4/20![Frontier logo]()
$218
This Expedia deal was found by Cheapflights users on 4/20. 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.
Mon 4/272:15 pm
MCI
- ONT
1 stop11h 40m
Frontier
Mon 5/45:33 pm
ONT
- MCI
1 stop18h 16m
Frontier
Deal found 4/20![Frontier logo]()
$225
This Frontier deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/22:51 pm
MCI
- ONT
1 stop11h 04m
Frontier
Thu 5/76:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 4/17![Frontier logo]()
$226
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 22, 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 22, 2026.
This Frontier deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/72:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Mon 5/116:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 4/21![Frontier logo]()
$281
This Alaska Airlines deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/305:50 pm
MCI
- ONT
1 stop8h 02m
Alaska Airlines
Tue 8/182:05 pm
ONT
- MCI
1 stop7h 54m
Alaska Airlines
Deal found 4/21![Alaska Airlines logo]()
$451
This Delta deal was found by Cheapflights users on 4/17. 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 7/297:05 am
MCI
- ONT
1 stop7h 03m
Delta
Fri 8/710:00 pm
ONT
- MCI
1 stop10h 12m
Delta
Deal found 4/17![Delta logo]()
$456
This United Airlines deal was found by Cheapflights users on 4/17. 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 5/99:45 am
MCI
- ONT
2 stops12h 51m
United Airlines
Mon 5/116:59 pm
ONT
- MCI
2 stops11h 57m
United Airlines
Deal found 4/17![United Airlines logo]()
$501
This Booking.com deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/111:45 pm
MCI
- ONT
1 stop22h 20m
Frontier
Tue 6/1610:50 am
ONT
- MCI
1 stop24h 10m
Frontier
Deal found 4/21![Frontier logo]()
$349
This Delta deal was found by Cheapflights users on 4/17. 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 7/307:05 am
MCI
- ONT
1 stop7h 03m
Delta
Fri 8/711:48 am
ONT
- MCI
1 stop10h 09m
Delta
Deal found 4/17![Delta logo]()
$456
This United Airlines deal was found by Cheapflights users on 4/20. 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 5/77:00 am
MCI
- ONT
1 stop7h 22m
United Airlines
Mon 5/116:59 pm
ONT
- MCI
2 stops13h 34m
United Airlines
Deal found 4/20![United Airlines logo]()
$506
This Alaska Airlines deal was found by Cheapflights users on 4/17. 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 9/117:00 am
MCI
- ONT
1 stop9h 15m
Alaska Airlines
Mon 9/1412:10 pm
ONT
- MCI
1 stop9h 49m
Alaska Airlines
Deal found 4/17![Alaska Airlines logo]()
$512
This United Airlines deal was found by Cheapflights users on 4/20. 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 5/147:00 am
MCI
- ONT
1 stop7h 22m
United Airlines
Sat 5/1610:43 am
ONT
- MCI
2 stops11h 09m
United Airlines
Deal found 4/20![United Airlines logo]()
$507
This Delta deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/187:38 pm
MCI
- ONT
1 stop6h 07m
Delta
Fri 6/265:24 pm
ONT
- MCI
1 stop4h 54m
Delta
Deal found 4/20![Delta logo]()
$513
This United Airlines deal was found by Cheapflights users on 4/18. 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 7/234:56 pm
MCI
- ONT
1 stop7h 55m
United Airlines
Thu 7/305:00 am
ONT
- MCI
1 stop5h 43m
United Airlines
Deal found 4/18![United Airlines logo]()
$517
Last-minute flights from Kansas City to OntarioDiscover last-minute flight deals from Kansas City to Ontario. Data last updated April 22, 2026 and is based on user searches.
Discover last-minute flight deals from Kansas City to Ontario. Data last updated April 22, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 4/20. 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.
Mon 4/272:15 pm
MCI
- ONT
1 stop11h 40m
Frontier
Mon 5/45:33 pm
ONT
- MCI
1 stop18h 16m
Frontier
Deal found 4/20![Frontier logo]()
$225
This Frontier deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/22:51 pm
MCI
- ONT
1 stop11h 04m
Frontier
Thu 5/76:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 4/17![Frontier logo]()
$226
This Frontier deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/52:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Tue 5/126:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 4/17![Frontier logo]()
$180
This Frontier deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier 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
Sun 5/106:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 4/21![Frontier logo]()
$200
This Booking.com deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/72:34 pm
MCI
- ONT
1 stop21h 31m
Frontier
Sun 5/106:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 4/21![Frontier logo]()
$202
This Expedia deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/82:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Tue 5/126:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 4/21![Frontier logo]()
$206
This Booking.com deal was found by Cheapflights users on 4/20. 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 5/112:34 pm
MCI
- ONT
1 stop21h 31m
Frontier
Sat 5/2310:50 am
ONT
- MCI
1 stop24h 59m
Frontier
Deal found 4/20![Frontier logo]()
$218
This Kiwi.com deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/122:34 pm
MCI
- ONT
1 stop21h 31m
Frontier
Tue 6/210:50 am
ONT
- MCI
1 stop24h 59m
Frontier
Deal found 4/17![Frontier logo]()
$164
This Frontier deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier 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
Tue 5/196:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 4/21![Frontier logo]()
$185
This Booking.com deal was found by Cheapflights users on 4/20. 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 5/202:34 pm
MCI
- ONT
1 stop21h 31m
Frontier
Wed 5/276:00 am
ONT
- MCI
1 stop5h 49m
Frontier
Deal found 4/20![Frontier logo]()
$217
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 22, 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 22, 2026.
This Super.com deal was found by Cheapflights users on 4/17. 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.
Tue 5/122:34 pm
MCI
- ONT
1 stop21h 31m
Frontier
Deal found 4/17![Frontier logo]()
$85
This Trip.com deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/52:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Deal found 4/22![Frontier logo]()
$89
This Super.com deal was found by Cheapflights users on 4/20. 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 4/20![Frontier logo]()
$105
This Mytrip deal was found by Cheapflights users on 4/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/92:34 pm
MCI
- ONT
1 stop11h 15m
Frontier
Deal found 4/20![Frontier logo]()
$106
This Super.com deal was found by Cheapflights users on 4/17. 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 5/202:34 pm
MCI
- ONT
1 stop21h 31m
Frontier
Deal found 4/17![Frontier logo]()
$109
This Super.com deal was found by Cheapflights users on 4/17. 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 5/272:34 pm
MCI
- ONT
1 stop21h 31m
Frontier
Deal found 4/17![Frontier logo]()
$110
This Frontier deal was found by Cheapflights users on 4/19. 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 6/301:45 pm
MCI
- ONT
1 stop12h 04m
Frontier
Deal found 4/19![Frontier logo]()
$111
This Frontier deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/11:45 pm
MCI
- ONT
1 stop12h 04m
Frontier
Deal found 4/21![Frontier logo]()
$125
This Super.com deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/272:15 pm
MCI
- ONT
1 stop11h 40m
Frontier
Deal found 4/20![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 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $164 (Kiwi.com) |
One-way from | $85 (Super.com) |
Popular in | December |
Cheapest in | October |
Average price | $355 |
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 22, 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 5/7
2:34 pm-11:49 pm
1 stop11h 15m
Ontario
Mon 5/11
6:00 am-1:49 pm
1 stop5h 49m
$281
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Thu 6/11
1:45 pm-10:05 am
1 stop22h 20m
Ontario
Tue 6/16
10:50 am-1:00 pm
1 stop24h 10m
$349
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Thu 7/30
5:50 pm-11:52 pm
1 stop8h 02m
Ontario
Tue 8/18
2:05 pm-11:59 pm
1 stop7h 54m
$451
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Wed 7/29
7:05 am-12:08 pm
1 stop7h 03m
Ontario
Fri 8/7
10:00 pm-10:12 am
1 stop10h 12m
$456
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Thu 7/30
7:05 am-12:08 pm
1 stop7h 03m
Ontario
Fri 8/7
11:48 am-11:57 pm
1 stop10h 09m
$456
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Sat 5/9
9:45 am-8:36 pm
2 stops12h 51m
Ontario
Mon 5/11
6:59 pm-8:56 am
2 stops11h 57m
$501
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Thu 5/7
7:00 am-12:22 pm
1 stop7h 22m
Ontario
Mon 5/11
6:59 pm-10:33 am
2 stops13h 34m
$506
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Thu 5/14
7:00 am-12:22 pm
1 stop7h 22m
Ontario
Sat 5/16
10:43 am-11:52 pm
2 stops11h 09m
$507
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Fri 9/11
7:00 am-2:15 pm
1 stop9h 15m
Ontario
Mon 9/14
12:10 pm-11:59 pm
1 stop9h 49m
$512
Quickest round-trip
Kansas CityOntario
MCI - ONT
MCIONT
Kansas City
Thu 6/18
7:38 pm-11:45 pm
1 stop6h 07m
Ontario
Fri 6/26
5:24 pm-12:18 am
1 stop4h 54m
$513
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from Kansas City to Ontario
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Kansas City to Ontario in April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Kansas City-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Kansas City-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Kansas City-Ontario flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Kansas City-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Kansas City-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Kansas City to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Kansas City with our price prediction graph.
MCI-ONT
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Kansas City to Ontario
Prices
More
What is the cheapest month to book a flight from Kansas City to Ontario?
Currently, October is the cheapest month in which you can book a flight from Kansas City to Ontario (average of $306). Flying from Kansas City to Ontario in December is currently the most expensive (average of $439). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Kansas City to Ontario?
What’s the top layover airport for flights from Kansas City to Ontario?
Share of 1-stop round-trip flights from Kansas City to Ontario chosen by Cheapflights users in the past 12 months, using the same layover each way.
Denver (DEN) – chosen by Cheapflights users on 67% of 1-stop itineraries from Kansas City to Ontario on Cheapflights.
What’s the cheapest layover airport for flights from Kansas City to Ontario?
Average round-trip fare for 1-stop flights from Kansas City to Ontario, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Denver (DEN) is the most affordable 1-stop option, with an average round-trip price of $163.
What’s the fastest layover option from Kansas City to Ontario?
Shortest average travel time for 1-stop one-way flights from Kansas City to Ontario, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Phoenix (PHX) have the shortest average one-way travel time for 1-stop routes: 4h 55m.
Which airport typically offers the quickest layover for flights from Kansas City to Ontario?
Average layover duration for 1-stop one-way flights from Kansas City to Ontario, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Phoenix (PHX) offer the fastest connection on this route, with an average layover time of 1h 03m.
Reviews of airlines servicing Ontario
Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated April 22, 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.
Overall
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Overall
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
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 22, 2026.
Kansas City and Ontario flights
Browse other Kansas City and Ontario flight options. Last updated on April 22, 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 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$72 | Average$240 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$284 | Average$401 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$284 | Average$402 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$289 | Average$389 | FlexibilityNo cancel fee | On-time63% |