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Cheap flights from Ontario to Kansas City from $84

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Kansas City departing on 4/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Ontario to Kansas City

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
10:50 am - 1:49 pm
ONT
-
MCI
24h 59m
1 stop
Frontier Logo
2:34 pm - 11:49 pm
MCI
-
ONT
11h 15m
1 stop
$189Frontier
Mon, May 11 - Wed, May 13
Frontier Logo
6:20 am - 7:58 pm
ONT
-
MCI
11h 38m
1 stop
Frontier Logo
2:51 pm - 11:55 pm
MCI
-
ONT
11h 04m
1 stop
$192Frontier
Sat, Apr 11 - Sat, Apr 18
Frontier Logo
12:59 am - 2:06 pm
ONT
-
MCI
11h 07m
1 stop
Frontier Logo
2:51 pm - 11:55 pm
MCI
-
ONT
11h 04m
1 stop
$210Frontier
Fri, Apr 17 - Sat, Apr 25
Frontier Logo
6:00 am - 1:49 pm
ONT
-
MCI
5h 49m
1 stop
Frontier Logo
2:34 pm - 11:49 pm
MCI
-
ONT
11h 15m
1 stop
$217Frontier
Tue, May 12 - Fri, May 15
Multiple Airlines Logo
6:20 am - 7:58 pm
ONT
-
MCI
11h 38m
1 stop
Multiple Airlines Logo
6:04 pm - 10:44 am
MCI
-
ONT
18h 40m
1 stop
$218Multiple Airlines
Tue, Apr 7 - Tue, Apr 14
Frontier Logo
5:33 pm - 2:06 pm
ONT
-
MCI
18h 33m
1 stop
Frontier Logo
2:34 pm - 10:05 am
MCI
-
ONT
21h 31m
1 stop
$221Frontier
Fri, May 1 - Mon, May 11
Frontier Logo
11:36 am - 1:49 pm
ONT
-
MCI
24h 13m
2 stops
Frontier Logo
2:34 pm - 11:49 pm
MCI
-
ONT
11h 15m
1 stop
$223Frontier
Mon, May 11 - Wed, May 13
Frontier Logo
6:00 am - 1:49 pm
ONT
-
MCI
5h 49m
1 stop
Frontier Logo
2:34 pm - 11:49 pm
MCI
-
ONT
11h 15m
1 stop
$227Frontier
Thu, May 7 - Wed, May 13
Frontier Logo
12:59 am - 1:30 pm
ONT
-
MCI
10h 31m
1 stop
Frontier Logo
2:15 pm - 11:55 pm
MCI
-
ONT
11h 40m
1 stop
$231Frontier
Sun, May 10 - Fri, May 15
Frontier Logo
6:20 am - 7:58 pm
ONT
-
MCI
11h 38m
1 stop
Frontier Logo
8:43 pm - 11:56 pm
MCI
-
ONT
5h 13m
1 stop
$240Frontier
Fri, Apr 3 - Tue, Apr 7

Delta flights from Ontario to Kansas City

Our best Delta deals on Ontario to Kansas City flight tickets
Delta
Apr 22
ONT7:00 amOntario
14h 43m
1 stop
MCI11:43 pmKansas City
Apr 26
MCI7:42 amKansas City
29h 31m
1 stop
ONT11:13 amOntario
$287
Delta
Mar 28
ONT1:20 pmOntario
5h 40m
1 stop
MCI9:00 pmKansas City
Apr 8
MCI8:11 pmKansas City
5h 40m
1 stop
ONT11:51 pmOntario
$472
Delta
Mar 25
ONT5:09 pmOntario
5h 37m
1 stop
MCI12:46 amKansas City
Mar 28
MCI6:40 amKansas City
7h 43m
1 stop
ONT12:23 pmOntario
$587

United Airlines flights from Ontario to Kansas City

Our best United Airlines deals on Ontario to Kansas City flight tickets
United Airlines
Mar 31
ONT1:34 pmOntario
5h 00m
1 stop
MCI8:34 pmKansas City
Apr 4
MCI7:00 amKansas City
7h 20m
1 stop
ONT12:20 pmOntario
$317
United Airlines
Mar 31
ONT11:05 amOntario
10h 27m
2 stops
MCI11:32 pmKansas City
Apr 4
MCI7:00 amKansas City
7h 20m
1 stop
ONT12:20 pmOntario
$322
United Airlines
Mar 28
ONT5:15 amOntario
5h 29m
1 stop
MCI12:44 pmKansas City
Apr 8
MCI5:18 pmKansas City
5h 18m
1 stop
ONT8:36 pmOntario
$532

momondo 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, momondo users made 832,500 searches. Data last updated March 15, 2026.
Use the filters below to find and compare flights from Ontario to Kansas City that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

Mon 5/11

10:50 am-1:49 pm

1 stop24h 59m

Kansas City

Wed 5/13

2:34 pm-11:49 pm

1 stop11h 15m

$189

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

Sat 4/11

6:20 am-7:58 pm

1 stop11h 38m

Kansas City

Sat 4/18

2:51 pm-11:55 pm

1 stop11h 04m

$192

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

Fri 4/17

12:59 am-2:06 pm

1 stop11h 07m

Kansas City

Sat 4/25

2:51 pm-11:55 pm

1 stop11h 04m

$210

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

Tue 5/12

6:00 am-1:49 pm

1 stop5h 49m

Kansas City

Fri 5/15

2:34 pm-11:49 pm

1 stop11h 15m

$217

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

Tue 4/7

6:20 am-7:58 pm

1 stop11h 38m

Kansas City

Tue 4/14

6:04 pm-10:44 am

1 stop18h 40m

$218

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

Fri 5/1

5:33 pm-2:06 pm

1 stop18h 33m

Kansas City

Mon 5/11

2:34 pm-10:05 am

1 stop21h 31m

$221

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

Mon 5/11

11:36 am-1:49 pm

2 stops24h 13m

Kansas City

Wed 5/13

2:34 pm-11:49 pm

1 stop11h 15m

$223

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

Thu 5/7

6:00 am-1:49 pm

1 stop5h 49m

Kansas City

Wed 5/13

2:34 pm-11:49 pm

1 stop11h 15m

$227

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

Sun 5/10

12:59 am-1:30 pm

1 stop10h 31m

Kansas City

Fri 5/15

2:15 pm-11:55 pm

1 stop11h 40m

$231
Quickest round-trip

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

Fri 4/3

6:20 am-7:58 pm

1 stop11h 38m

Kansas City

Tue 4/7

8:43 pm-11:56 pm

1 stop5h 13m

$240

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Kansas City from

How to get the cheapest flight ticket from Ontario to Kansas City

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Kansas City?

In general, August is the cheapest month to fly from Ontario to Kansas City. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $247. If you’re not able to fly to Kansas City in August, then September is your next best option. Flight prices from Ontario to Kansas City during September average around $266.

What is the cheapest day to depart on your flight to Kansas City?

The cheapest day to depart on your flight to Kansas City is on a Thursday when prices can be found for as low as $291. This is often the case because there is less demand to fly during this day of the week. Flights from Ontario to Kansas City on a Saturday will generally be more expensive and average around $376. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Kansas City?

Flying to Kansas City from Ontario in the evening is the least expensive time of day to depart. momondo users have found prices as low as $165 when looking at flights departing in the evening. Try not to purchase tickets at noon because they tend to be around $470. Of course, these prices can vary depending on the time of year and what airport you fly to.

How far in advance should I book a flight to Kansas City?

You are more likely to see cheaper flights to Kansas City from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Kansas City for around $380 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Kansas City from Ontario for as low as $115 on momondo.

How have Ontario to Kansas City flight prices changed over time?

As of March 2026, prices for Ontario to Kansas City flights are approximately 68% more expensive when compared to flights at the same time last year.

When to book flights from Ontario to Kansas City

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Kansas City according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Kansas City (ONT to MCI) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Kansas City

Fastest flight time

5h 10m

Direct flights

None
The fastest flight from Ontario to Kansas City takes 5h 10m
There are no direct flights from Ontario to Kansas City. There are no popular flight routes from Ontario to Kansas City.
Search flight deals

  • How far is Ontario to Kansas City by plane?

    The straight-line distance from Ontario to Kansas City is 1321.7 mi. A reasonable flight in good conditions will take 5h 10m.

  • When did momondo last update prices for flights from Ontario Airport to Kansas City Airport?

    Prices for flights from Ontario Airport to Kansas City Airport are updated daily.

  • How many operators does momondo search for flights from Ontario Airport to Kansas City Airport?

  • How old do you have to be to fly from Ontario Airport to Kansas City Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Kansas City Airport.

  • What documentation or ID do you need to fly to Kansas City Airport?

    The travel and health documents required for your trip to Kansas City Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Kansas City Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Ontario to Kansas City?

Best airlines flying from Ontario to Kansas City

Compare and see reviews for airlines that fly from Ontario to Kansas City with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $98Free CancellationRating
7.9
8,293 reviews
Search Delta flights
FrontierPriceFrom $115Free CancellationRating
5.7
3,032 reviews
Search Frontier flights
United AirlinesPriceFrom $236Free CancellationRating
7.4
9,427 reviews
Search United Airlines flights
SouthwestPriceFrom $247Free CancellationRating
8.0
4,318 reviews
Search Southwest flights
American AirlinesPriceFrom $274Free CancellationRating
7.1
11,472 reviews
Search American Airlines flights

  • Southwest Flights From Ontario to Kansas City

    The lowest priced Southwest flight from Ontario to Kansas City from the last 72 hours was $247. Generally, Southwest has 1 flight on this route every week with an average price of $429. Southwest is rated 8.0/10 by our users.

Traveling to a place near Kansas City?

Book flights to Kansas City if you plan to visit one of these locations
Overland Park
Topeka
Kansas City
Independence
Lawrence
Olathe
Liberty
Lenexa
Blue Springs
North Kansas City
Lee's Summit
Belton
Warrensburg
Gladstone
Leavenworth
Shawnee
Excelsior Springs
Cameron
Lansing
Missouri City

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Kansas City?

Finding the right flight to Kansas City from Ontario is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Kansas City quick and easy, saving you time and money.

Can I find flights from Ontario to Kansas City with flexible booking policies on momondo?

Yes. All flights to Kansas City from Ontario on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Ontario to Kansas City?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Kansas City from Ontario.

I’m not ready to book a flight from Ontario to Kansas City right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Ontario to Kansas City flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Kansas City trip

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