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Cheap flights from Kansas City to Ontario from $119

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 5/2. 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 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
8:51 pm - 11:26 amMCI-ONT
16h 35m1 stop
Frontier Logo
12:16 pm - 7:51 pmONT-MCI
5h 35m1 stop
$240Frontier
Find Deal
Sun, May 4 - Sun, May 11
Frontier Logo
8:51 pm - 11:15 amMCI-ONT
16h 24m1 stop
Frontier Logo
12:59 am - 7:51 pmONT-MCI
16h 52m1 stop
$248Frontier
Find Deal
Thu, May 8 - Sun, May 11
United Airlines Logo
5:20 pm - 8:53 pmMCI-ONT
5h 33m1 stop
United Airlines Logo
4:15 pm - 11:44 pmONT-MCI
5h 29m1 stop
$255United Airlines
Find Deal
Tue, May 13 - Wed, May 14
United Airlines Logo
11:40 am - 8:34 pmMCI-ONT
10h 54m2 stops
United Airlines Logo
1:45 pm - 11:44 pmONT-MCI
7h 59m2 stops
$265United Airlines
Find Deal
Tue, May 13 - Wed, May 14
American Airlines Logo
5:12 pm - 11:43 pmMCI-ONT
8h 31m1 stop
American Airlines Logo
12:59 am - 9:56 amONT-MCI
6h 57m1 stop
$288American Airlines
Find Deal
Tue, Jun 3 - Mon, Jun 16
American Airlines Logo
11:13 am - 6:23 pmMCI-ONT
9h 10m2 stops
American Airlines Logo
12:59 am - 9:56 amONT-MCI
6h 57m1 stop
$293American Airlines
Find Deal
Tue, Jun 3 - Mon, Jun 16
Delta Logo
6:45 am - 12:15 pmMCI-ONT
7h 30m1 stop
Delta Logo
6:00 am - 1:15 pmONT-MCI
5h 15m1 stop
$297Delta
Find Deal
Wed, May 21 - Sun, May 25
Southwest Logo
3:55 pm - 8:15 pmMCI-ONT
6h 20m1 stop
Southwest Logo
1:45 pm - 11:20 pmONT-MCI
7h 35m1 stop
$317Southwest
Find Deal
Fri, Jul 4 - Tue, Jul 8
Southwest Logo
2:15 pm - 7:55 pmMCI-ONT
7h 40m2 stops
Southwest Logo
1:45 pm - 11:20 pmONT-MCI
7h 35m1 stop
$322Southwest
Find Deal
Fri, Jul 4 - Tue, Jul 8
Delta Logo
6:40 am - 12:23 pmMCI-ONT
7h 43m1 stop
Delta Logo
5:05 pm - 12:20 amONT-MCI
5h 15m1 stop
$335Delta
Find Deal
Thu, Aug 7 - Tue, Aug 19

American Airlines flights from Kansas City to Ontario

Our best American Airlines deals on Kansas City to Ontario flight tickets
American Airlines
Jun 3
MCI5:12 pmKansas City
8h 31m
1 stop
ONT11:43 pmOntario
Jun 16
ONT12:59 amOntario
6h 57m
1 stop
MCI9:56 amKansas City
American Airlines
Jun 3
MCI11:13 amKansas City
9h 10m
2 stops
ONT6:23 pmOntario
Jun 16
ONT12:59 amOntario
6h 57m
1 stop
MCI9:56 amKansas City
American Airlines
May 3
MCI7:18 amKansas City
8h 31m
1 stop
ONT1:49 pmOntario
May 6
ONT11:59 pmOntario
8h 24m
1 stop
MCI10:23 amKansas City

United Airlines flights from Kansas City to Ontario

Our best United Airlines deals on Kansas City to Ontario flight tickets
United Airlines
May 13
MCI5:20 pmKansas City
5h 33m
1 stop
ONT8:53 pmOntario
May 14
ONT4:15 pmOntario
5h 29m
1 stop
MCI11:44 pmKansas City
United Airlines
May 13
MCI11:40 amKansas City
10h 54m
2 stops
ONT8:34 pmOntario
May 14
ONT1:45 pmOntario
7h 59m
2 stops
MCI11:44 pmKansas City
United Airlines
May 8
MCI3:10 pmKansas City
8h 50m
1 stop
ONT10:00 pmOntario
May 12
ONT1:45 pmOntario
7h 59m
2 stops
MCI11:44 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 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 $368 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 9% 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

$119

Fastest flight time

5h 13m

Direct flights

None

Airports in Ontario

1 airport
The best one-way flight to Ontario from Kansas City in the past 72 hours is $119. The best round-trip flight deal from Kansas City to Ontario found on momondo in the last 72 hours is $240.
The fastest flight from Kansas City to Ontario takes 5h 13m
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 13m.

  • 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
7,899 reviews
Search Spirit Airlines flights
FrontierPriceFrom $114Free CancellationRating
5.9
3,278 reviews
Search Frontier flights
DeltaPriceFrom $248Free CancellationRating
8.0
7,901 reviews
Search Delta flights
American AirlinesPriceFrom $276Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $315Free CancellationRating
7.4
8,629 reviews
Search United Airlines flights
SouthwestPriceFrom $326Free CancellationRating
8.0
4,278 reviews
Search Southwest flights

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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