HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Kansas City

$107+ 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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MCI
May 3 — May 101
Sat 5/3
Sat 5/10
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Kansas City 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.

Cheapflights Tip: The best prices from Ontario to Kansas City are usually found in April or September, booked 75 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 April 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$241
(CheapOair)

One-way from

$107
(CheapOair)

Popular in

February

Cheapest in

April

Average price

$297
Provider with most accurate pricing for Ontario-Kansas City flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Kansas City flights.
Search Deals
From Ontario to Kansas City
Search Deals
One-way flight from Ontario to Kansas City
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($21 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

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 April 28, 2025.

This CheapOair deal was found by Cheapflights users on 4/28. 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.
Sun 5/412:59 amONT - MCI
1 stop16h 52mFrontier
Thu 5/88:51 pmMCI - ONT
1 stop16h 24mFrontier
Deal found 4/28$221
This Expedia deal was found by Cheapflights users on 4/26. 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 6/46:00 amONT - MCI
1 stop10h 07mMultiple Airlines
Mon 6/97:51 pmMCI - ONT
1 stop5h 59mMultiple Airlines
Deal found 4/26$283
This Delta deal was found by Cheapflights users on 4/27. 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.
Tue 7/11:15 pmONT - MCI
1 stop5h 56mDelta
Sat 7/56:40 amMCI - ONT
1 stop7h 37mDelta
Deal found 4/27$299
This Alaska Airlines deal was found by Cheapflights users on 4/27. 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 8/213:04 pmONT - MCI
1 stop6h 55mAlaska Airlines
Tue 8/264:55 pmMCI - ONT
1 stop8h 58mAlaska Airlines
Deal found 4/27$316
This Hawaiian Airlines deal was found by Cheapflights users on 4/28. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/253:00 pmONT - MCI
1 stop6h 59mHawaiian Airlines
Sat 9/274:55 pmMCI - ONT
1 stop8h 58mHawaiian Airlines
Deal found 4/28$334
This American Airlines deal was found by Cheapflights users on 4/28. 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.
Fri 6/1312:59 amONT - MCI
1 stop6h 57mAmerican Airlines
Sat 6/215:49 pmMCI - ONT
1 stop7h 13mAmerican Airlines
Deal found 4/28$336
This United Airlines deal was found by Cheapflights users on 4/28. 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 9/275:10 amONT - MCI
2 stops8h 46mUnited Airlines
Mon 9/296:00 amMCI - ONT
2 stops8h 13mUnited Airlines
Deal found 4/28$345
This Southwest deal was found by Cheapflights users on 4/27. 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.
Mon 7/144:10 pmONT - MCI
1 stop5h 35mSouthwest
Wed 7/165:05 pmMCI - ONT
2 stops7h 35mSouthwest
Deal found 4/27$349

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 April 28, 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

Thu 5/29

12:59 am-7:04 pm

1 stop16h 05m

Kansas City

Fri 6/6

7:51 pm-11:50 pm

1 stop5h 59m

$241

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

Wed 6/4

6:00 am-6:07 pm

1 stop10h 07m

Kansas City

Mon 6/9

7:51 pm-11:50 pm

1 stop5h 59m

$283

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

Tue 7/1

1:15 pm-9:11 pm

1 stop5h 56m

Kansas City

Sat 7/5

6:40 am-12:17 pm

1 stop7h 37m

$299

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

Thu 8/21

3:04 pm-11:59 pm

1 stop6h 55m

Kansas City

Tue 8/26

4:55 pm-11:53 pm

1 stop8h 58m

$316

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

Thu 9/25

3:00 pm-11:59 pm

1 stop6h 59m

Kansas City

Sat 9/27

4:55 pm-11:53 pm

1 stop8h 58m

$334

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

Fri 6/13

12:59 am-9:56 am

1 stop6h 57m

Kansas City

Sat 6/21

5:49 pm-11:02 pm

1 stop7h 13m

$336

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

Sat 9/27

5:10 am-3:56 pm

2 stops8h 46m

Kansas City

Mon 9/29

6:00 am-12:13 pm

2 stops8h 13m

$345

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

Mon 7/14

4:10 pm-11:45 pm

1 stop5h 35m

Kansas City

Wed 7/16

5:05 pm-10:40 pm

2 stops7h 35m

$349

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

Tue 6/3

6:42 pm-7:11 pm

1 stop22h 29m

$107

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

Tue 9/9

7:10 am-4:01 pm

1 stop6h 51m

$149

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Showing 1-10 of 14 results
1
2

Compare providers for flights from Ontario to Kansas City

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 Ontario to Kansas City in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Kansas City flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Kansas City flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Kansas City flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Kansas City flights, Cheapflights users trust eDreams the most. eDreams 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 Ontario-Kansas City 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 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 April 25, 2025.

Booking 75 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 April 28, 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.

Rainfall in Kansas City by month

Plan your trip to Kansas City by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Kansas City ranges from 1.1 - 5.2 inches per month. May is typically the wettest month, when rainfall can reach 5.2 in. January is typically the driest time to visit Kansas City when rainfall is around 1.1 in.

Temperature in Kansas City by month

Plan your trip to Kansas City by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Kansas City, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 28.4 F).

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 April 28, 2025.
To help decide which airline to fly from Ontario to Kansas City, see what other customers have to say about Alaska Airlines, Southwest and Delta. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,949 reviews

Entertainment

7.1

Comfort

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,949 reviews
Alaska Airlines
8.0
Very good
9,949 reviews

Entertainment

7.1

Comfort

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,292 reviews
Alaska Airlines
8.0
Very good
9,949 reviews

Entertainment

7.1

Comfort

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,927 reviews
Alaska Airlines
8.0
Very good
9,949 reviews

Entertainment

7.1

Comfort

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,401 reviews
Alaska Airlines
8.0
Very good
9,949 reviews

Entertainment

7.1

Comfort

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,694 reviews
Alaska Airlines
8.0
Very good
9,949 reviews

Entertainment

7.1

Comfort

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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.

  • 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 $241 on this airline. Additional options worth looking into are Delta and Alaska Airlines, starting at $299 and $316 round-trip. Frontier is priced at 36% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Ontario to Kansas City one-way?

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $107. Hawaiian Airlines flights start at $149 while deals on Delta start at $150 one-way.

  • 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 Ontario?

Book flights to Ontario if you plan to visit one of these locations
Shawnee
Olathe
Liberty
Overland Park
Lenexa
Kansas City
North Kansas City
Lawrence
Belton

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 for Ontario to Kansas City

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Kansas City flights
San Francisco to St. Louis flights
Los Angeles to St. Louis flights
Ontario to St. Louis flights
San Francisco to Kansas City flights
Las Vegas to St. Louis flights
San Diego to Kansas City flights
San Diego to St. Louis flights
Las Vegas to Kansas City flights
Sacramento to Kansas City flights
Santa Ana to St. Louis flights
Oakland to Kansas City flights
Santa Ana to Kansas City flights
Burbank to Kansas City flights
San Jose to St. Louis flights
Burbank to St. Louis flights
Sacramento to St. Louis flights
San Jose to Kansas City flights
Long Beach to Kansas City flights
Oakland to St. Louis flights
Los Angeles to Springfield flights
Fresno to Kansas City flights
San Diego to Springfield flights
Sacramento to Springfield flights
Ontario to Springfield flights
San Francisco to Springfield flights
Santa Ana to Springfield flights
Palm Springs to Kansas City flights
Long Beach to St. Louis flights
Fresno to St. Louis flights
Medford to St. Louis flights
Fresno to Springfield flights
Palm Springs to St. Louis flights
Los Angeles to Joplin flights
Burbank to Springfield flights
Reno to St. Louis flights
Ontario to Joplin flights
Arcata to Branson flights
San Jose to Springfield flights
Monterey to St. Louis flights
Reno to Kansas City flights
Palm Springs to Springfield flights
Santa Ana to Joplin flights
Santa Barbara to St. Louis flights
Medford to Kansas City flights
Las Vegas to Springfield flights
Santa Barbara to Kansas City flights
Monterey to Kansas City flights
Reno to Springfield flights

Top 6 airlines flying from Ontario to Kansas City

Discover the top 6 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 April 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$97Average$176FlexibilityNo cancel feeOn-time65%
FrontierCheapest$128Average$263FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$266Average$421FlexibilityNo cancel feeOn-time69%
DeltaCheapest$296Average$351FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$317Average$413FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$318Average$421FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2025 Cheapflights