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Cheap flights from Kansas City to Los Angeles from $60

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 3/4. 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

Enter your travel dates to find the best prices.
Frontier Logo
6:13 pm - 11:59 pm
MCI
-
ONT
7h 46m
1 stop
Frontier Logo
7:30 am - 3:44 pm
ONT
-
MCI
6h 14m
1 stop
$138Frontier
Fri, Feb 13 - Wed, Feb 18
Frontier Logo
8:41 pm - 7:59 am
MCI
-
ONT
13h 18m
1 stop
Frontier Logo
6:15 am - 7:55 pm
ONT
-
MCI
11h 40m
1 stop
$139Frontier
Sat, Feb 28 - Sat, Mar 7
Frontier Logo
8:33 pm - 9:34 pm
MCI
-
ONT
27h 01m
1 stop
Frontier Logo
6:15 am - 7:55 pm
ONT
-
MCI
11h 40m
1 stop
$144Frontier
Mon, Mar 2 - Sat, Mar 7
Frontier Logo
6:13 pm - 11:59 pm
MCI
-
ONT
7h 46m
1 stop
Frontier Logo
7:30 am - 3:44 pm
ONT
-
MCI
6h 14m
1 stop
$145Frontier
Fri, Feb 13 - Wed, Feb 18
Frontier Logo
6:13 pm - 11:59 pm
MCI
-
ONT
7h 46m
1 stop
Frontier Logo
7:30 am - 3:44 pm
ONT
-
MCI
6h 14m
1 stop
$146Frontier
Fri, Feb 13 - Wed, Feb 18
Frontier Logo
8:33 pm - 9:34 pm
MCI
-
ONT
27h 01m
1 stop
Frontier Logo
6:15 am - 7:55 pm
ONT
-
MCI
11h 40m
1 stop
$148Frontier
Mon, Mar 2 - Mon, Mar 9
Frontier Logo
8:41 pm - 12:20 am
MCI
-
ONT
5h 39m
1 stop
Frontier Logo
7:30 am - 3:44 pm
ONT
-
MCI
6h 14m
1 stop
$149Frontier
Mon, Feb 9 - Wed, Feb 18
Frontier Logo
8:40 pm - 11:59 pm
MCI
-
ONT
5h 19m
1 stop
Frontier Logo
6:00 am - 7:51 pm
ONT
-
MCI
11h 51m
1 stop
$150Frontier
Sat, Mar 28 - Sat, Apr 4
Frontier Logo
8:33 pm - 9:34 pm
MCI
-
ONT
27h 01m
1 stop
Frontier Logo
6:15 am - 7:55 pm
ONT
-
MCI
11h 40m
1 stop
$151Frontier
Mon, Mar 2 - Fri, Mar 6
Frontier Logo
5:48 pm - 9:34 pm
MCI
-
ONT
5h 46m
1 stop
Frontier Logo
7:30 am - 3:44 pm
ONT
-
MCI
6h 14m
1 stop
$154Frontier
Wed, Feb 11 - Wed, Feb 18

Frontier flights from Kansas City to Ontario

Our best Frontier deals on Kansas City to Ontario flight tickets
Frontier
Feb 13
MCI6:13 pmKansas City
7h 46m
1 stop
ONT11:59 pmOntario
Feb 18
ONT7:30 amOntario
6h 14m
1 stop
MCI3:44 pmKansas City
$138
Frontier
Feb 28
MCI8:41 pmKansas City
13h 18m
1 stop
ONT7:59 amOntario
Mar 7
ONT6:15 amOntario
11h 40m
1 stop
MCI7:55 pmKansas City
$139
Frontier
Mar 2
MCI8:33 pmKansas City
27h 01m
1 stop
ONT9:34 pmOntario
Mar 7
ONT6:15 amOntario
11h 40m
1 stop
MCI7:55 pmKansas City
$144

Delta flights from Kansas City to Ontario

Our best Delta deals on Kansas City to Ontario flight tickets
Delta
Jan 28
MCI6:30 amKansas City
7h 46m
1 stop
ONT12:16 pmOntario
Feb 3
ONT1:11 pmOntario
5h 28m
1 stop
MCI8:39 pmKansas City
$459
Delta
Jan 28
MCI6:30 amKansas City
7h 46m
1 stop
ONT12:16 pmOntario
Feb 5
ONT7:30 amOntario
13h 53m
1 stop
MCI11:23 pmKansas City
$475
Delta
Jan 28
MCI6:30 amKansas City
7h 46m
1 stop
ONT12:16 pmOntario
Feb 2
ONT6:00 amOntario
5h 58m
1 stop
MCI1:58 pmKansas City
$533

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 January 14, 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

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Fri 2/13

6:13 pm-11:59 pm

1 stop7h 46m

Ontario

Wed 2/18

7:30 am-3:44 pm

1 stop6h 14m

$138

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Sat 2/28

8:41 pm-7:59 am

1 stop13h 18m

Ontario

Sat 3/7

6:15 am-7:55 pm

1 stop11h 40m

$139

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Mon 3/2

8:33 pm-9:34 pm

1 stop27h 01m

Ontario

Sat 3/7

6:15 am-7:55 pm

1 stop11h 40m

$144

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Fri 2/13

6:13 pm-11:59 pm

1 stop7h 46m

Ontario

Wed 2/18

7:30 am-3:44 pm

1 stop6h 14m

$145

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Fri 2/13

6:13 pm-11:59 pm

1 stop7h 46m

Ontario

Wed 2/18

7:30 am-3:44 pm

1 stop6h 14m

$146

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Mon 3/2

8:33 pm-9:34 pm

1 stop27h 01m

Ontario

Mon 3/9

6:15 am-7:55 pm

1 stop11h 40m

$148

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Mon 2/9

8:41 pm-12:20 am

1 stop5h 39m

Ontario

Wed 2/18

7:30 am-3:44 pm

1 stop6h 14m

$149

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Sat 3/28

8:40 pm-11:59 pm

1 stop5h 19m

Ontario

Sat 4/4

6:00 am-7:51 pm

1 stop11h 51m

$150

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Mon 3/2

8:33 pm-9:34 pm

1 stop27h 01m

Ontario

Fri 3/6

6:15 am-7:55 pm

1 stop11h 40m

$151

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Wed 2/11

5:48 pm-9:34 pm

1 stop5h 46m

Ontario

Wed 2/18

7:30 am-3:44 pm

1 stop6h 14m

$154

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 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, 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 September instead. Flights to Ontario in September, while not as cheap as those in October, still average around $327.

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

As of January 2026, prices for Kansas City to Ontario flights are approximately 32% 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

5h 13m

Direct flights

None
The fastest flight from Kansas City to Ontario takes 5h 13m
There are no direct flights from Kansas City to Ontario. There are no popular flight routes from Kansas City to Ontario.
Search flight deals

  • 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
FrontierPriceFrom $75Free CancellationRating
5.7
3,056 reviews
Search Frontier flights
United AirlinesPriceFrom $284Free CancellationRating
7.4
9,157 reviews
Search United Airlines flights
American AirlinesPriceFrom $284Free CancellationRating
7.2
11,122 reviews
Search American Airlines flights
SouthwestPriceFrom $289Free CancellationRating
8.0
4,258 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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