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Cheap flights from Kansas City to Los Angeles from $98

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 Los Angeles departing on 7/20. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Kansas City to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
2:17 pm - 11:55 pm
MCI
-
ONT
11h 38m
1 stop
Frontier Logo
2:55 pm - 1:22 pm
ONT
-
MCI
20h 27m
1 stop
$220Frontier
Wed, Sep 9 - Tue, Sep 22
Frontier Logo
1:45 pm - 11:50 pm
MCI
-
ONT
12h 05m
1 stop
Frontier Logo
6:00 am - 1:00 pm
ONT
-
MCI
5h 00m
1 stop
$242Frontier
Thu, Aug 6 - Tue, Aug 11
Frontier Logo
1:45 pm - 10:04 am
MCI
-
ONT
22h 19m
1 stop
Frontier Logo
3:40 pm - 3:47 pm
ONT
-
MCI
22h 07m
1 stop
$244Frontier
Sat, Jul 11 - Wed, Jul 15
Frontier Logo
1:45 pm - 11:50 pm
MCI
-
ONT
12h 05m
1 stop
Frontier Logo
6:00 am - 1:00 pm
ONT
-
MCI
5h 00m
1 stop
$245Frontier
Tue, Aug 11 - Wed, Aug 12
Frontier Logo
4:32 pm - 8:03 am
MCI
-
ONT
17h 31m
1 stop
Frontier Logo
10:49 am - 1:00 pm
ONT
-
MCI
24h 11m
1 stop
$246Frontier
Thu, Aug 6 - Mon, Aug 10
Frontier Logo
2:17 pm - 11:55 pm
MCI
-
ONT
11h 38m
1 stop
Frontier Logo
6:15 am - 1:22 pm
ONT
-
MCI
5h 07m
1 stop
$247Frontier
Mon, Oct 26 - Wed, Nov 11
Frontier Logo
1:45 pm - 10:05 am
MCI
-
ONT
22h 20m
1 stop
Frontier Logo
3:34 pm - 12:55 pm
ONT
-
MCI
19h 21m
1 stop
$252Frontier
Tue, Aug 25 - Sat, Aug 29
Frontier Logo
4:32 pm - 3:09 pm
MCI
-
ONT
24h 37m
1 stop
Frontier Logo
6:00 am - 1:00 pm
ONT
-
MCI
5h 00m
1 stop
$254Frontier
Mon, Aug 17 - Sat, Aug 22
Frontier Logo
2:17 pm - 11:55 pm
MCI
-
ONT
11h 38m
1 stop
Frontier Logo
6:00 am - 1:22 pm
ONT
-
MCI
5h 22m
1 stop
$255Frontier
Wed, Sep 9 - Wed, Sep 16
Frontier Logo
1:45 pm - 10:04 am
MCI
-
ONT
22h 19m
1 stop
Frontier Logo
1:38 pm - 3:47 pm
ONT
-
MCI
24h 09m
1 stop
$257Frontier
Tue, Jul 28 - Wed, Aug 5

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Frontier flights from Kansas City to Ontario

Our best Frontier deals on Kansas City to Ontario flight tickets
Frontier
Sep 9
MCI2:17 pmKansas City
11h 38m
1 stop
ONT11:55 pmOntario
Sep 22
ONT2:55 pmOntario
20h 27m
1 stop
MCI1:22 pmKansas City
$220
Frontier
Aug 6
MCI1:45 pmKansas City
12h 05m
1 stop
ONT11:50 pmOntario
Aug 11
ONT6:00 amOntario
5h 00m
1 stop
MCI1:00 pmKansas City
$242
Frontier
Jul 11
MCI1:45 pmKansas City
22h 19m
1 stop
ONT10:04 amOntario
Jul 15
ONT3:40 pmOntario
22h 07m
1 stop
MCI3:47 pmKansas City
$244

American Airlines flights from Kansas City to Ontario

Our best American Airlines deals on Kansas City to Ontario flight tickets
American Airlines
Aug 19
MCI9:50 amKansas City
10h 25m
2 stops
ONT6:15 pmOntario
Aug 27
ONT12:59 pmOntario
9h 36m
2 stops
MCI12:35 amKansas City
$285
American Airlines
Jun 13
MCI5:31 amKansas City
8h 33m
2 stops
ONT12:04 pmOntario
Jul 11
ONT11:59 pmOntario
8h 35m
1 stop
MCI10:34 amKansas City
$471
American Airlines
Jun 24
MCI11:29 amKansas City
8h 52m
2 stops
ONT6:21 pmOntario
Jul 14
ONT1:11 pmOntario
9h 12m
2 stops
MCI12:23 amKansas City
$476

momondo Fare Finder

 
Customize your flight search to find flights from Kansas City to Ontario 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 June 11, 2026.
Use the filters below to find and compare flights from Kansas City to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Wed 9/9

2:17 pm-11:55 pm

1 stop11h 38m

Ontario

Tue 9/22

2:55 pm-1:22 pm

1 stop20h 27m

$220

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Thu 8/6

1:45 pm-11:50 pm

1 stop12h 05m

Ontario

Tue 8/11

6:00 am-1:00 pm

1 stop5h 00m

$242

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Sat 7/11

1:45 pm-10:04 am

1 stop22h 19m

Ontario

Wed 7/15

3:40 pm-3:47 pm

1 stop22h 07m

$244

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Tue 8/11

1:45 pm-11:50 pm

1 stop12h 05m

Ontario

Wed 8/12

6:00 am-1:00 pm

1 stop5h 00m

$245

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Thu 8/6

4:32 pm-8:03 am

1 stop17h 31m

Ontario

Mon 8/10

10:49 am-1:00 pm

1 stop24h 11m

$246
Quickest round-trip

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Mon 10/26

2:17 pm-11:55 pm

1 stop11h 38m

Ontario

Wed 11/11

6:15 am-1:22 pm

1 stop5h 07m

$247

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Tue 8/25

1:45 pm-10:05 am

1 stop22h 20m

Ontario

Sat 8/29

3:34 pm-12:55 pm

1 stop19h 21m

$252

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Mon 8/17

4:32 pm-3:09 pm

1 stop24h 37m

Ontario

Sat 8/22

6:00 am-1:00 pm

1 stop5h 00m

$254

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Wed 9/9

2:17 pm-11:55 pm

1 stop11h 38m

Ontario

Wed 9/16

6:00 am-1:22 pm

1 stop5h 22m

$255

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Tue 7/28

1:45 pm-10:04 am

1 stop22h 19m

Ontario

Wed 8/5

1:38 pm-3:47 pm

1 stop24h 09m

$257

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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, October 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 $306. If you aren’t able to travel during the month of October, then book flights to Ontario from Kansas City during August instead. Flights to Ontario in August, while not as cheap as those in October, still average around $323.

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

As of June 2026, prices for Kansas City to Ontario flights are approximately 43% more expensive 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

Fastest flight time

6h 08m

Direct flights

None
The fastest flight from Kansas City to Ontario takes 6h 08m
There are no direct flights from Kansas City to Ontario. There are no popular flight routes from Kansas City to Ontario.
Search flight deals

Frequently asked questions about flying from Kansas City to Ontario

  • 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 6h 08m.

  • 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
FrontierPriceFrom $94Free CancellationRating
5.6
2,897 reviews
Search Frontier flights
American AirlinesPriceFrom $247Free CancellationRating
7.1
11,639 reviews
Search American Airlines flights
United AirlinesPriceFrom $253Free CancellationRating
7.4
9,805 reviews
Search United Airlines flights
SouthwestPriceFrom $269Free CancellationRating
7.9
4,234 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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