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Cheap flights from Kansas City to Ontario from $106

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Kansas City to Ontario departing on 5/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Kansas City to Los Angeles

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from Kansas City to Los Angeles.
Frontier Logo
7:56 pm - 9:12 amMCI-ONT
15h 16m1 stop
Frontier Logo
5:21 pm - 11:35 amONT-MCI
16h 14m1 stop
$201Frontier
Find Deal
Wed, Jun 4 - Sat, Jun 7
Frontier Logo
7:39 pm - 9:15 amMCI-ONT
15h 36m1 stop
Frontier Logo
12:59 am - 7:06 pmONT-MCI
16h 07m1 stop
$218Frontier
Find Deal
Wed, May 28 - Sun, Jun 1
Delta Logo
6:05 pm - 11:42 pmMCI-ONT
7h 37m1 stop
Delta Logo
6:00 am - 1:17 pmONT-MCI
5h 17m1 stop
$299Delta
Find Deal
Tue, May 27 - Tue, Jun 3
American Airlines Logo
5:15 am - 11:50 amMCI-ONT
8h 35m2 stops
American Airlines Logo
11:59 pm - 10:23 amONT-MCI
8h 24m1 stop
$304American Airlines
Find Deal
Wed, May 21 - Wed, May 28
American Airlines Logo
5:15 am - 11:50 amMCI-ONT
8h 35m2 stops
American Airlines Logo
1:14 pm - 10:51 pmONT-MCI
7h 37m2 stops
$309American Airlines
Find Deal
Wed, May 21 - Wed, May 28
Delta Logo
6:05 pm - 11:42 pmMCI-ONT
7h 37m1 stop
Delta Logo
6:00 am - 1:17 pmONT-MCI
5h 17m1 stop
$317Delta
Find Deal
Thu, May 29 - Tue, Jun 3
Southwest Logo
1:30 pm - 5:45 pmMCI-ONT
6h 15m2 stops
Southwest Logo
2:50 pm - 10:10 pmONT-MCI
5h 20m1 stop
$323Southwest
Find Deal
Sat, Jun 28 - Fri, Jul 4
Southwest Logo
11:50 am - 4:30 pmMCI-ONT
6h 40m2 stops
Southwest Logo
1:25 pm - 10:15 pmONT-MCI
6h 50m1 stop
$340Southwest
Find Deal
Thu, Aug 21 - Mon, Aug 25
United Airlines Logo
3:10 pm - 10:00 pmMCI-ONT
8h 50m1 stop
United Airlines Logo
5:05 am - 12:52 pmONT-MCI
5h 47m1 stop
$379United Airlines
Find Deal
Tue, May 20 - Wed, May 21
United Airlines Logo
5:20 pm - 9:04 pmMCI-ONT
5h 44m1 stop
United Airlines Logo
6:00 am - 4:12 pmONT-MCI
8h 12m2 stops
$384United Airlines
Find Deal
Wed, May 28 - Wed, Jun 4

Delta flights from Kansas City to Ontario

Our best Delta deals on Kansas City to Ontario flight tickets
Delta
May 27
MCI6:05 pmKansas City
7h 37m
1 stop
ONT11:42 pmOntario
Jun 3
ONT6:00 amOntario
5h 17m
1 stop
MCI1:17 pmKansas City
Delta
May 29
MCI6:05 pmKansas City
7h 37m
1 stop
ONT11:42 pmOntario
Jun 3
ONT6:00 amOntario
5h 17m
1 stop
MCI1:17 pmKansas City
Delta
May 30
MCI6:05 pmKansas City
7h 37m
1 stop
ONT11:42 pmOntario
Jun 4
ONT4:57 pmOntario
5h 23m
1 stop
MCI12:20 amKansas City

Frontier flights from Kansas City to Ontario

Our best Frontier deals on Kansas City to Ontario flight tickets
Frontier
Jun 4
MCI7:56 pmKansas City
15h 16m
1 stop
ONT9:12 amOntario
Jun 7
ONT5:21 pmOntario
16h 14m
1 stop
MCI11:35 amKansas City
Frontier
May 28
MCI7:39 pmKansas City
15h 36m
1 stop
ONT9:15 amOntario
Jun 1
ONT12:59 amOntario
16h 07m
1 stop
MCI7:06 pmKansas City
Frontier
May 8
MCI8:51 pmKansas City
16h 24m
1 stop
ONT11:15 amOntario
May 11
ONT12:59 amOntario
16h 52m
1 stop
MCI7:51 pmKansas City

See travel insights to Los Angeles from

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

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 Kansas City and Ontario?

What is the cheapest month to fly to Ontario?

In general, September is the cheapest month to fly from Kansas City to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $237. If you aren’t able to travel during the month of September, then book flights to Ontario from Kansas City during May instead. Flights to Ontario in May, while not as cheap as those in September, still average around $326.

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Wednesday when prices can be found for as low as $325. This is often the case because there is less demand to fly during this day of the week. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Kansas City to Ontario for around $401.

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

In the evening is the cheapest time of day to fly from Kansas City to Ontario when you can find flight prices for as low as $185. Flying to Ontario in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $386 on average. Flights to Ontario from Kansas City in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight to Ontario?

You are more likely to see cheaper flights to Ontario from Kansas City when booking 14 weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $370 when searching 14 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from Kansas City for as low as $194 on momondo.

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

As of April 2025, prices for Kansas City to Ontario flights are approximately 17% cheaper when compared to flights at the same time last year.

When to book flights from Kansas City to Ontario

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

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

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

Best Price Found

$106

Fastest flight time

5h 00m

Direct flights

None

Airports in Ontario

1 airport
The best one-way flight to Ontario from Kansas City in the past 72 hours is $106. The best round-trip flight deal from Kansas City to Ontario found on momondo in the last 72 hours is $201.
The fastest flight from Kansas City to Ontario takes 5h 00m
There are no direct flights from Kansas City to Ontario. Popular non-direct route for this connection is Kansas City Airport - Ontario Airport.
There is 1 airport near Ontario: Ontario (ONT)

  • How far is Kansas City to Ontario by plane?

    Kansas City and Ontario are 1321.7 mi apart from one another. In terms of flight time, this usually takes a little over 5h 00m.

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

    Prices for flights from Kansas City Airport to Ontario Airport were last updated today.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Kansas City Airport to Ontario Airport.

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

    The travel and health documents you'll need for your trip to Ontario Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ontario Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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


Best airlines flying from Kansas City to Ontario

Compare and see reviews for airlines that fly from Kansas City to Ontario with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $98Free CancellationRating
6.3
7,956 reviews
Search Spirit Airlines flights
FrontierPriceFrom $114Free CancellationRating
5.9
3,284 reviews
Search Frontier flights
DeltaPriceFrom $248Free CancellationRating
8.0
7,929 reviews
Search Delta flights
American AirlinesPriceFrom $276Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $315Free CancellationRating
7.4
8,694 reviews
Search United Airlines flights
SouthwestPriceFrom $326Free CancellationRating
8.0
4,292 reviews
Search Southwest flights
  • Southwest Flights From Kansas City to Ontario

    Southwest flies from Kansas City to Ontario around 2 times per week, with 4,292 momondo users rating the airline 8.0/10. The cheapest Southwest deal from Kansas City to Ontario in the last 72 hours was $326 (round-trip), much lower than the average airfare cost of $415 for Southwest flights on this route.


Why use momondo?

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

It is quick and easy to find Kansas City to Ontario flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Ontario that suits you.

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

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

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

Once you have performed a search for Kansas City to Ontario flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes. momondo can track prices for Kansas City to Ontario flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.


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