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Cheap flights from Kansas City to Los Angeles from $62

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 2/25. 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
8:41 pm - 11:24 pm
MCI
-
ONT
28h 43m1 stop
Frontier Logo
6:20 am - 7:51 pm
ONT
-
MCI
11h 31m1 stop
$151Frontier
Fri, Jan 30 - Fri, Feb 6
Frontier Logo
8:41 pm - 12:20 am
MCI
-
ONT
5h 39m1 stop
Frontier Logo
8:10 am - 3:44 pm
ONT
-
MCI
5h 34m1 stop
$155Frontier
Mon, Feb 9 - Wed, Feb 11
Frontier Logo
8:43 pm - 12:20 am
MCI
-
ONT
5h 37m1 stop
Frontier Logo
8:10 am - 3:44 pm
ONT
-
MCI
5h 34m1 stop
$156Frontier
Thu, Feb 5 - Wed, Feb 11
Frontier Logo
8:36 pm - 7:59 am
MCI
-
ONT
13h 23m1 stop
Frontier Logo
6:10 am - 7:48 pm
ONT
-
MCI
11h 38m1 stop
$157Frontier
Sat, Feb 21 - Mon, Feb 23
Frontier Logo
4:39 pm - 9:34 am
MCI
-
ONT
18h 55m1 stop
Frontier Logo
8:40 am - 3:44 pm
ONT
-
MCI
5h 04m1 stop
$162Frontier
Wed, Feb 18 - Wed, Feb 25
Frontier Logo
8:36 pm - 7:59 am
MCI
-
ONT
13h 23m1 stop
Frontier Logo
6:10 am - 7:48 pm
ONT
-
MCI
11h 38m1 stop
$167Frontier
Sat, Feb 21 - Mon, Mar 2
Multiple Airlines Logo
8:36 pm - 7:59 am
MCI
-
ONT
13h 23m1 stop
Multiple Airlines Logo
3:22 pm - 11:33 pm
ONT
-
MCI
6h 11m1 stop
$174Multiple Airlines
Sat, Feb 21 - Tue, Feb 24
Frontier Logo
4:39 pm - 9:34 pm
MCI
-
ONT
6h 55m1 stop
Frontier Logo
6:00 am - 7:46 pm
ONT
-
MCI
11h 46m1 stop
$175Frontier
Wed, Feb 25 - Sat, Feb 28
Frontier Logo
8:36 pm - 7:59 am
MCI
-
ONT
13h 23m1 stop
Frontier Logo
3:22 pm - 3:44 pm
ONT
-
MCI
22h 22m2 stops
$179Frontier
Sat, Feb 21 - Tue, Feb 24
Frontier Logo
8:41 pm - 12:20 am
MCI
-
ONT
5h 39m1 stop
Frontier Logo
6:20 am - 7:51 pm
ONT
-
MCI
11h 31m1 stop
$180Frontier
Mon, Feb 2 - Mon, Feb 9

Frontier flights from Kansas City to Ontario

Our best Frontier deals on Kansas City to Ontario flight tickets
Frontier
Jan 30
MCI8:41 pmKansas City
28h 43m
1 stop
ONT11:24 pmOntario
Feb 6
ONT6:20 amOntario
11h 31m
1 stop
MCI7:51 pmKansas City
$151
Find similar
Frontier
Feb 9
MCI8:41 pmKansas City
5h 39m
1 stop
ONT12:20 amOntario
Feb 11
ONT8:10 amOntario
5h 34m
1 stop
MCI3:44 pmKansas City
$155
Find similar
Frontier
Feb 5
MCI8:43 pmKansas City
5h 37m
1 stop
ONT12:20 amOntario
Feb 11
ONT8:10 amOntario
5h 34m
1 stop
MCI3:44 pmKansas City
$156
Find similar

Delta flights from Kansas City to Ontario

Our best Delta deals on Kansas City to Ontario flight tickets
Delta
Jan 24
MCI7:00 amKansas City
8h 56m
1 stop
ONT1:56 pmOntario
Jan 27
ONT6:00 amOntario
5h 58m
1 stop
MCI1:58 pmKansas City
$265
Find similar
Delta
Jan 30
MCI6:30 amKansas City
7h 46m
1 stop
ONT12:16 pmOntario
Jan 31
ONT6:00 amOntario
5h 58m
1 stop
MCI1:58 pmKansas City
$275
Find similar
Delta
Jan 28
MCI7:00 amKansas City
8h 56m
1 stop
ONT1:56 pmOntario
Feb 2
ONT7:30 amOntario
13h 53m
1 stop
MCI11:23 pmKansas City
$281
Find similar

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 4, 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 1/30

8:41 pm-11:24 pm

1 stop28h 43m

Ontario

Fri 2/6

6:20 am-7:51 pm

1 stop11h 31m

$151

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Mon 2/9

8:41 pm-12:20 am

1 stop5h 39m

Ontario

Wed 2/11

8:10 am-3:44 pm

1 stop5h 34m

$155

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Thu 2/5

8:43 pm-12:20 am

1 stop5h 37m

Ontario

Wed 2/11

8:10 am-3:44 pm

1 stop5h 34m

$156

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Sat 2/21

8:36 pm-7:59 am

1 stop13h 23m

Ontario

Mon 2/23

6:10 am-7:48 pm

1 stop11h 38m

$157

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Wed 2/18

4:39 pm-9:34 am

1 stop18h 55m

Ontario

Wed 2/25

8:40 am-3:44 pm

1 stop5h 04m

$162

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Sat 2/21

8:36 pm-7:59 am

1 stop13h 23m

Ontario

Mon 3/2

6:10 am-7:48 pm

1 stop11h 38m

$167

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Sat 2/21

8:36 pm-7:59 am

1 stop13h 23m

Ontario

Tue 2/24

3:22 pm-11:33 pm

1 stop6h 11m

$174

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Wed 2/25

4:39 pm-9:34 pm

1 stop6h 55m

Ontario

Sat 2/28

6:00 am-7:46 pm

1 stop11h 46m

$175

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Sat 2/21

8:36 pm-7:59 am

1 stop13h 23m

Ontario

Tue 2/24

3:22 pm-3:44 pm

2 stops22h 22m

$179

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Mon 2/2

8:41 pm-12:20 am

1 stop5h 39m

Ontario

Mon 2/9

6:20 am-7:51 pm

1 stop11h 31m

$180

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 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 weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $392 when searching 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 $316 on momondo.

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

As of January 2026, prices for Kansas City to Ontario flights are approximately 29% 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
3,062 reviews
Search Frontier flights
United AirlinesPriceFrom $284Free CancellationRating
7.4
9,137 reviews
Search United Airlines flights
American AirlinesPriceFrom $284Free CancellationRating
7.2
11,079 reviews
Search American Airlines flights
SouthwestPriceFrom $289Free CancellationRating
8.0
4,252 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.

An easier way to manage your Ontario trip

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