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Kansas City

$70+ Cheap flights from Ontario to Kansas City (ONT - MCI)

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 11/10. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MCI
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Ontario to Kansas City are usually found in August or September, booked 45 days in advance, depart on a Friday or Saturday and return on a Wednesday

Cheap flight deals from Ontario to Kansas City

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Kansas City (MCI). 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 septiembre 11, 2025.

Round-trip from

$131
(Kiwi.com)

One-way from

$70
(Trip.com)

Popular in

May

Cheapest in

August

Average price

$297
From Ontario to Kansas City
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One-way flight from Ontario to Kansas City
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Highest demand for flights based on searches. 12% potential increase in price ($55 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Ontario to Kansas City

Cheapest flights from Ontario to Kansas City
Explore the most affordable flight options available from Ontario to Kansas City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 11, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/86:53 amONT - MCI
1 stop9h 02mFrontier
mié. 10/157:02 pmMCI - ONT
1 stop6h 48mFrontier
Deal found 9/10$131
This Frontier deal was found by Cheapflights users on 9/11. 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.
mié. 10/226:53 amONT - MCI
1 stop9h 02mFrontier
sáb. 10/257:02 pmMCI - ONT
1 stop6h 48mFrontier
Deal found 9/11$153
This Booking.com deal was found by Cheapflights users on 9/11. 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.
vie. 11/74:05 pmONT - MCI
1 stop25h 28mFrontier
lun. 11/108:28 pmMCI - ONT
1 stop5h 22mFrontier
Deal found 9/11$175
This Frontier deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/1312:05 pmONT - MCI
1 stop5h 28mFrontier
lun. 11/178:28 pmMCI - ONT
1 stop5h 22mFrontier
Deal found 9/9$180
This Frontier deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/16:53 amONT - MCI
1 stop10h 45mFrontier
lun. 11/38:28 pmMCI - ONT
1 stop5h 22mFrontier
Deal found 9/10$184
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/310:40 pmONT - MCI
2 stops14h 30mMultiple Airlines
lun. 10/63:01 pmMCI - ONT
1 stop9h 12mMultiple Airlines
Deal found 9/10$187
This Priceline deal was found by Cheapflights users on 9/11. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/117:04 amONT - MCI
1 stop8h 51mFrontier
sáb. 10/187:02 pmMCI - ONT
1 stop6h 48mFrontier
Deal found 9/11$191
This Booking.com deal was found by Cheapflights users on 9/11. 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.
dom. 10/58:59 pmONT - MCI
1 stop14h 49mFrontier
jue. 10/98:38 pmMCI - ONT
1 stop5h 12mFrontier
Deal found 9/11$202
This Gotogate deal was found by Cheapflights users on 9/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/96:53 amONT - MCI
1 stop11h 00mFrontier
sáb. 10/117:02 pmMCI - ONT
1 stop6h 48mFrontier
Deal found 9/11$204
This Booking.com deal was found by Cheapflights users on 9/11. 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.
dom. 11/25:53 amONT - MCI
1 stop10h 40mFrontier
sáb. 11/158:28 pmMCI - ONT
1 stop5h 22mFrontier
Deal found 9/11$205

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Kansas City 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 septiembre 11, 2025.
Use the filters below to find and compare flights from Ontario to Kansas City that are best for you.

Fly from

Ontario

Fly to

Kansas City

Route

Depart

Return

Price

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

jue. 11/13

12:05 pm-7:33 pm

1 stop5h 28m

Kansas City

dom. 11/16

8:28 pm-11:50 pm

1 stop5h 22m

$209

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

jue. 10/9

10:40 pm-7:53 pm

2 stops19h 13m

Kansas City

jue. 10/16

8:38 pm-11:50 pm

1 stop5h 12m

$217

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

mié. 10/8

6:53 am-5:55 pm

1 stop9h 02m

Kansas City

dom. 10/12

8:38 pm-11:50 pm

1 stop5h 12m

$226

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

jue. 11/13

12:05 pm-7:33 pm

1 stop5h 28m

Kansas City

vie. 11/14

11:12 am-11:50 pm

2 stops14h 38m

$226

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

jue. 11/13

7:20 am-3:54 pm

1 stop6h 34m

Kansas City

mié. 11/19

7:00 am-3:17 pm

1 stop10h 17m

$256

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

jue. 11/13

7:20 am-3:54 pm

1 stop6h 34m

Kansas City

mar. 11/18

7:00 am-3:17 pm

1 stop10h 17m

$256

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

mié. 10/22

4:35 pm-12:18 am

1 stop5h 43m

Kansas City

mié. 10/29

6:15 pm-9:20 pm

1 stop5h 05m

$257

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

vie. 10/24

4:35 pm-12:18 am

1 stop5h 43m

Kansas City

lun. 10/27

5:45 am-9:05 am

1 stop5h 20m

$272

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

jue. 10/9

6:53 am-7:53 pm

1 stop11h 00m

Kansas City

dom. 10/12

8:38 pm-11:50 pm

1 stop5h 12m

$272

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

vie. 10/24

8:20 am-7:05 pm

2 stops8h 45m

Kansas City

mié. 10/29

3:25 pm-8:40 pm

2 stops7h 15m

$286

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 23 results
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Best time to book a flight from Ontario to Kansas City

Have a flexible travel schedule? Discover the best time to fly to Kansas City from Ontario with our price prediction graph.
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 Ontario to Kansas City

How far ahead should I book a flight from Ontario to Kansas City?

Use this chart to determine the optimal time to book a round-trip flight from Ontario to Kansas City. Price data was last updated on August 29, 2025.

Booking 45 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ontario to Kansas City. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Ontario to Kansas City?

Currently, January is the cheapest month in which you can book a flight from Ontario to Kansas City (average of $298). Flying from Ontario to Kansas City in June is currently the most expensive (average of $352). 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.

What is the cheapest time of day to fly from ONT to MCI?

Find hourly flight availability from Ontario to Kansas City. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 11, 2025.

It’s optimal to fly from Ontario to Kansas City in the evening. By choosing this option you can save up to 40% on the cost of your flight, compared to a flight in the morning.

What is the cheapest day to fly from Ontario to Kansas City?

Use this chart to determine the cheapest time to fly round-trip from Ontario to Kansas City. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Ontario to Kansas City flight should consider departing on Wednesday evenings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Kansas City

Get insights into the airlines that provide service to Kansas City. 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 Kansas City. Reviews last updated septiembre 11, 2025.
See what other customers who have flown with Southwest, Delta, and United Airlines from Ontario to Kansas City have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
8.0
Very good
7,960 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,937 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,177 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Food

7.0

Overall

8.0

Comfort

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Kansas City. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Ontario to Kansas City?

    There are many flights that can get you from Ontario to Kansas City in 5h 28m. Fly via Frontier or Alaska Airlines to get the fastest option. There are 1314 mi between Ontario and Kansas City. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Ontario to Kansas City round-trip?

    Our cheapest airline available from Ontario to Kansas City is Frontier. Our recent data shows that you can find tickets from as low as $116 on this airline. Additional options worth looking into are Delta and Southwest, starting at $192 and $247 round-trip. Frontier is priced at 69% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Ontario to Kansas City that include hotel bookings?

    Yes. In addition to deals on Ontario to Kansas City flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Kansas City?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Kansas City.

  • Can I find deals for business class flights from Ontario to Kansas City?

    Yes. Cheapflights offers flight deals from Ontario to Kansas City by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Kansas City?

    Currently, January is the cheapest month in which you can book a flight from Ontario to Kansas City (average of $298). Flying from Ontario to Kansas City in June is currently the most expensive (average of $352). 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.

See more FAQs

Traveling to a place near Kansas City?

Book flights to Kansas City if you plan to visit one of these locations
Shawnee
Lee's Summit
Liberty
Belton
Warrensburg
North Kansas City
Kansas City
Overland Park
Lenexa
Lansing
Lawrence
Olathe

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Ontario to Kansas City

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Ontario to Kansas City

Discover the top 5 airlines that operate flights from Ontario to Kansas City. 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 septiembre 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$116Average$242FlexibilityNo cancel feeOn-time62%
DeltaCheapest$192Average$376FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$247Average$426FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$278Average$506FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$318Average$406FlexibilityNo cancel feeOn-time71%

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