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Cheap flights from Kansas City to Los Angeles from $65

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 5/9. 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

Enter your travel dates to find the best prices.
Frontier Logo
2:34 pm - 11:49 pm
MCI
-
ONT
11h 15m
1 stop
Frontier Logo
6:00 am - 1:49 pm
ONT
-
MCI
5h 49m
1 stop
$140Frontier
Wed, May 6 - Tue, May 12
Frontier Logo
2:34 pm - 11:49 pm
MCI
-
ONT
11h 15m
1 stop
Frontier Logo
6:00 am - 1:49 pm
ONT
-
MCI
5h 49m
1 stop
$156Frontier
Tue, May 5 - Sat, May 9
Frontier Logo
2:34 pm - 11:49 pm
MCI
-
ONT
11h 15m
1 stop
Frontier Logo
6:00 am - 1:49 pm
ONT
-
MCI
5h 49m
1 stop
$160Frontier
Tue, May 5 - Tue, May 12
Frontier Logo
2:34 pm - 10:05 am
MCI
-
ONT
21h 31m
1 stop
Frontier Logo
6:00 am - 1:49 pm
ONT
-
MCI
5h 49m
1 stop
$162Frontier
Sat, May 23 - Tue, May 26
Frontier Logo
2:34 pm - 11:49 pm
MCI
-
ONT
11h 15m
1 stop
Frontier Logo
11:36 am - 1:49 pm
ONT
-
MCI
24h 13m
2 stops
$167Frontier
Tue, May 5 - Mon, May 11
Frontier Logo
2:34 pm - 11:49 pm
MCI
-
ONT
11h 15m
1 stop
Frontier Logo
11:36 am - 1:49 pm
ONT
-
MCI
24h 13m
2 stops
$171Frontier
Wed, May 6 - Mon, May 11
Frontier Logo
2:51 pm - 11:55 pm
MCI
-
ONT
11h 04m
1 stop
Frontier Logo
12:59 am - 1:30 pm
ONT
-
MCI
10h 31m
1 stop
$180Frontier
Sat, May 2 - Sun, May 3
Frontier Logo
2:51 pm - 11:55 pm
MCI
-
ONT
11h 04m
1 stop
Frontier Logo
6:00 am - 1:49 pm
ONT
-
MCI
5h 49m
1 stop
$184Frontier
Sat, May 2 - Tue, May 5
Frontier Logo
2:51 pm - 11:55 pm
MCI
-
ONT
11h 04m
1 stop
Frontier Logo
6:00 am - 1:49 pm
ONT
-
MCI
5h 49m
1 stop
$185Frontier
Sat, May 2 - Sat, May 9
Frontier Logo
2:34 pm - 10:05 am
MCI
-
ONT
21h 31m
1 stop
Frontier Logo
10:50 am - 1:49 pm
ONT
-
MCI
24h 59m
1 stop
$186Frontier
Tue, May 5 - Fri, May 8

Frontier flights from Kansas City to Ontario

Our best Frontier deals on Kansas City to Ontario flight tickets
Frontier
May 6
MCI2:34 pmKansas City
11h 15m
1 stop
ONT11:49 pmOntario
May 12
ONT6:00 amOntario
5h 49m
1 stop
MCI1:49 pmKansas City
$140
Frontier
May 5
MCI2:34 pmKansas City
11h 15m
1 stop
ONT11:49 pmOntario
May 9
ONT6:00 amOntario
5h 49m
1 stop
MCI1:49 pmKansas City
$156
Frontier
May 5
MCI2:34 pmKansas City
11h 15m
1 stop
ONT11:49 pmOntario
May 12
ONT6:00 amOntario
5h 49m
1 stop
MCI1:49 pmKansas City
$160

United Airlines flights from Kansas City to Ontario

Our best United Airlines deals on Kansas City to Ontario flight tickets
United Airlines
Apr 26
MCI7:00 amKansas City
7h 20m
1 stop
ONT12:20 pmOntario
May 8
ONT10:37 amOntario
11h 14m
2 stops
MCI11:51 pmKansas City
$547
United Airlines
Apr 25
MCI7:00 amKansas City
7h 20m
1 stop
ONT12:20 pmOntario
Apr 28
ONT5:10 amOntario
5h 42m
1 stop
MCI12:52 pmKansas City
$567
United Airlines
Apr 24
MCI7:00 amKansas City
7h 20m
1 stop
ONT12:20 pmOntario
May 2
ONT10:43 amOntario
11h 09m
2 stops
MCI11:52 pmKansas City
$572

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 April 13, 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 5/6

2:34 pm-11:49 pm

1 stop11h 15m

Ontario

Tue 5/12

6:00 am-1:49 pm

1 stop5h 49m

$140

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Tue 5/5

2:34 pm-11:49 pm

1 stop11h 15m

Ontario

Sat 5/9

6:00 am-1:49 pm

1 stop5h 49m

$156

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Tue 5/5

2:34 pm-11:49 pm

1 stop11h 15m

Ontario

Tue 5/12

6:00 am-1:49 pm

1 stop5h 49m

$160

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Sat 5/23

2:34 pm-10:05 am

1 stop21h 31m

Ontario

Tue 5/26

6:00 am-1:49 pm

1 stop5h 49m

$162

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Tue 5/5

2:34 pm-11:49 pm

1 stop11h 15m

Ontario

Mon 5/11

11:36 am-1:49 pm

2 stops24h 13m

$167

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Wed 5/6

2:34 pm-11:49 pm

1 stop11h 15m

Ontario

Mon 5/11

11:36 am-1:49 pm

2 stops24h 13m

$171

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Sat 5/2

2:51 pm-11:55 pm

1 stop11h 04m

Ontario

Sun 5/3

12:59 am-1:30 pm

1 stop10h 31m

$180
Quickest round-trip

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Sat 5/2

2:51 pm-11:55 pm

1 stop11h 04m

Ontario

Tue 5/5

6:00 am-1:49 pm

1 stop5h 49m

$184

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Sat 5/2

2:51 pm-11:55 pm

1 stop11h 04m

Ontario

Sat 5/9

6:00 am-1:49 pm

1 stop5h 49m

$185

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Tue 5/5

2:34 pm-10:05 am

1 stop21h 31m

Ontario

Fri 5/8

10:50 am-1:49 pm

1 stop24h 59m

$186

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 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 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 April 2026, prices for Kansas City to Ontario flights are approximately 137% 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 54m

Direct flights

None
The fastest flight from Kansas City to Ontario takes 5h 54m
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 5h 54m.

  • 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 $142Free CancellationRating
5.7
2,993 reviews
Search Frontier flights
United AirlinesPriceFrom $284Free CancellationRating
7.4
9,579 reviews
Search United Airlines flights
American AirlinesPriceFrom $284Free CancellationRating
7.1
11,565 reviews
Search American Airlines flights
SouthwestPriceFrom $289Free CancellationRating
8.0
4,328 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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