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Cheap flights from Ontario to Kansas City from $54

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 11/8. 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
6:53 am - 7:38 pmONT-MCI
10h 45m1 stop
Frontier Logo
8:28 pm - 11:50 pmMCI-ONT
5h 22m1 stop
$108Frontier
Find Deal
Sat, Nov 1 - Sat, Nov 8
Frontier Logo
12:05 pm - 7:38 pmONT-MCI
5h 33m1 stop
Frontier Logo
8:28 pm - 9:27 pmMCI-ONT
26h 59m1 stop
$109Frontier
Find Deal
Sat, Nov 1 - Mon, Nov 3
Frontier Logo
12:05 pm - 7:38 pmONT-MCI
5h 33m1 stop
Frontier Logo
6:49 pm - 9:27 pmMCI-ONT
28h 38m1 stop
$140Frontier
Find Deal
Sat, Nov 1 - Tue, Nov 4
Frontier Logo
8:45 am - 5:19 pmONT-MCI
6h 34m1 stop
Frontier Logo
6:49 pm - 9:29 pmMCI-ONT
28h 40m1 stop
$145Frontier
Find Deal
Tue, Nov 4 - Tue, Nov 11
Multiple Airlines Logo
7:44 pm - 9:58 amONT-MCI
12h 14m1 stop
Multiple Airlines Logo
6:49 pm - 9:27 pmMCI-ONT
28h 38m1 stop
$160Multiple Airlines
Find Deal
Thu, Oct 30 - Tue, Nov 4
Multiple Airlines Logo
12:05 pm - 7:38 pmONT-MCI
5h 33m1 stop
Multiple Airlines Logo
1:23 pm - 8:42 pmMCI-ONT
9h 19m1 stop
$161Multiple Airlines
Find Deal
Sat, Nov 1 - Wed, Nov 5
Multiple Airlines Logo
6:00 am - 10:01 pmONT-MCI
14h 01m1 stop
Multiple Airlines Logo
6:49 pm - 9:29 pmMCI-ONT
28h 40m1 stop
$163Multiple Airlines
Find Deal
Thu, Nov 6 - Tue, Nov 11
Multiple Airlines Logo
12:05 pm - 7:38 pmONT-MCI
5h 33m1 stop
Multiple Airlines Logo
1:23 pm - 8:42 pmMCI-ONT
9h 19m1 stop
$164Multiple Airlines
Find Deal
Sat, Nov 1 - Wed, Nov 12
Multiple Airlines Logo
8:45 am - 5:19 pmONT-MCI
6h 34m1 stop
Multiple Airlines Logo
1:23 pm - 8:42 pmMCI-ONT
9h 19m1 stop
$169Multiple Airlines
Find Deal
Tue, Nov 4 - Wed, Nov 12
Frontier Logo
6:53 am - 7:38 pmONT-MCI
10h 45m1 stop
Frontier Logo
6:49 pm - 9:57 pmMCI-ONT
29h 08m2 stops
$173Frontier
Find Deal
Sat, Nov 1 - Wed, Nov 5

United Airlines flights from Ontario to Kansas City

Our best United Airlines deals on Ontario to Kansas City flight tickets
United Airlines
Oct 22
ONT1:15 pmOntario
8h 15m
1 stop
MCI11:30 pmKansas City
Oct 29
MCI3:25 pmKansas City
9h 06m
1 stop
ONT10:31 pmOntario
$495
Find similar
United Airlines
Oct 21
ONT5:05 amOntario
5h 37m
1 stop
MCI12:42 pmKansas City
Oct 24
MCI7:30 amKansas City
11h 53m
2 stops
ONT5:23 pmOntario
$612
Find similar
United Airlines
Oct 22
ONT9:36 amOntario
9h 33m
2 stops
MCI9:09 pmKansas City
Oct 26
MCI4:50 pmKansas City
7h 41m
1 stop
ONT10:31 pmOntario
$658
Find similar

Frontier flights from Ontario to Kansas City

Our best Frontier deals on Ontario to Kansas City flight tickets
Frontier
Nov 1
ONT6:53 amOntario
10h 45m
1 stop
MCI7:38 pmKansas City
Nov 8
MCI8:28 pmKansas City
5h 22m
1 stop
ONT11:50 pmOntario
$108
Find similar
Frontier
Nov 1
ONT12:05 pmOntario
5h 33m
1 stop
MCI7:38 pmKansas City
Nov 3
MCI8:28 pmKansas City
26h 59m
1 stop
ONT9:27 pmOntario
$109
Find similar
Frontier
Nov 1
ONT12:05 pmOntario
5h 33m
1 stop
MCI7:38 pmKansas City
Nov 4
MCI6:49 pmKansas City
28h 38m
1 stop
ONT9:27 pmOntario
$140
Find similar

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 October 9, 2025.
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

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

Sat 11/1

6:53 am-7:38 pm

1 stop10h 45m

Kansas City

Sat 11/8

8:28 pm-11:50 pm

1 stop5h 22m

$108

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

Sat 11/1

12:05 pm-7:38 pm

1 stop5h 33m

Kansas City

Mon 11/3

8:28 pm-9:27 pm

1 stop26h 59m

$109

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

Sat 11/1

12:05 pm-7:38 pm

1 stop5h 33m

Kansas City

Tue 11/4

6:49 pm-9:27 pm

1 stop28h 38m

$140

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

Tue 11/4

8:45 am-5:19 pm

1 stop6h 34m

Kansas City

Tue 11/11

6:49 pm-9:29 pm

1 stop28h 40m

$145

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

Thu 10/30

7:44 pm-9:58 am

1 stop12h 14m

Kansas City

Tue 11/4

6:49 pm-9:27 pm

1 stop28h 38m

$160

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

Sat 11/1

12:05 pm-7:38 pm

1 stop5h 33m

Kansas City

Wed 11/5

1:23 pm-8:42 pm

1 stop9h 19m

$161

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

Thu 11/6

6:00 am-10:01 pm

1 stop14h 01m

Kansas City

Tue 11/11

6:49 pm-9:29 pm

1 stop28h 40m

$163

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

Sat 11/1

12:05 pm-7:38 pm

1 stop5h 33m

Kansas City

Wed 11/12

1:23 pm-8:42 pm

1 stop9h 19m

$164

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

Tue 11/4

8:45 am-5:19 pm

1 stop6h 34m

Kansas City

Wed 11/12

1:23 pm-8:42 pm

1 stop9h 19m

$169

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

Sat 11/1

6:53 am-7:38 pm

1 stop10h 45m

Kansas City

Wed 11/5

6:49 pm-9:57 pm

2 stops29h 08m

$173

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 typical price of a round-trip flight between Ontario and Kansas City?

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 $276. 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 $354. 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 $180 when looking at flights departing in the evening. Try not to purchase tickets in the morning because they tend to be around $357. 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 $378 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 $324 on momondo.

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

As of October 2025, prices for Ontario to Kansas City flights are approximately 181% 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

Direct flights

None
There are no direct flights from Ontario to Kansas City. There are no popular flight routes from Ontario to Kansas City.
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  • 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 33m.

  • 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
FrontierPriceFrom $121Free CancellationRating
5.8
3,143 reviews
Search Frontier flights
DeltaPriceFrom $134Free CancellationRating
7.9
7,969 reviews
Search Delta flights
SouthwestPriceFrom $247Free CancellationRating
8.0
4,237 reviews
Search Southwest flights
United AirlinesPriceFrom $256Free CancellationRating
7.4
8,968 reviews
Search United Airlines flights
American AirlinesPriceFrom $318Free CancellationRating
7.2
11,043 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 2 flights on this route every week with an average price of $427. 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
Topeka
Overland Park
Kansas City
Lawrence
Independence
Olathe
Liberty
Blue Springs
Lenexa
Lee's Summit
Shawnee
Excelsior Springs
Leavenworth
North Kansas City
Warrensburg
Belton
Gladstone
Cameron
Missouri City
Lansing

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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