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Cheap flights from Kansas City to Los Angeles from $105

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 4/7. 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
$210Frontier
Sat, May 16 - Wed, May 20
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
$211Frontier
Sat, May 2 - Sat, May 9
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
$222Frontier
Fri, May 8 - Sat, May 16
Frontier Logo
2:15 pm - 11:55 pm
MCI
-
ONT
11h 40m
1 stop
Frontier Logo
6:00 am - 1:49 pm
ONT
-
MCI
5h 49m
1 stop
$230Frontier
Mon, May 4 - Wed, May 6
Frontier Logo
2:15 pm - 7:31 am
MCI
-
ONT
19h 16m
1 stop
Frontier Logo
5:33 pm - 2:06 pm
ONT
-
MCI
18h 33m
1 stop
$240Frontier
Thu, Apr 30 - Fri, May 1
Frontier Logo
2:15 pm - 7:31 am
MCI
-
ONT
19h 16m
1 stop
Frontier Logo
5:33 pm - 1:49 pm
ONT
-
MCI
18h 16m
1 stop
$241Frontier
Thu, Apr 30 - Mon, May 4
Frontier Logo
2:15 pm - 11:55 pm
MCI
-
ONT
11h 40m
1 stop
Frontier Logo
5:33 pm - 2:06 pm
ONT
-
MCI
18h 33m
1 stop
$243Frontier
Mon, Apr 27 - Fri, May 1
Frontier Logo
8:43 pm - 11:56 pm
MCI
-
ONT
5h 13m
1 stop
Frontier Logo
12:59 am - 2:06 pm
ONT
-
MCI
11h 07m
1 stop
$250Frontier
Sat, Apr 11 - Fri, Apr 17
Frontier Logo
8:43 pm - 11:56 pm
MCI
-
ONT
5h 13m
1 stop
Frontier Logo
5:33 pm - 2:06 pm
ONT
-
MCI
18h 33m
1 stop
$252Frontier
Sat, Apr 11 - Fri, Apr 17
Frontier Logo
2:15 pm - 11:55 pm
MCI
-
ONT
11h 40m
1 stop
Frontier Logo
5:33 pm - 1:49 pm
ONT
-
MCI
18h 16m
1 stop
$259Frontier
Fri, May 1 - Mon, May 4

Frontier flights from Kansas City to Ontario

Our best Frontier deals on Kansas City to Ontario flight tickets
Frontier
May 16
MCI2:34 pmKansas City
11h 15m
1 stop
ONT11:49 pmOntario
May 20
ONT6:00 amOntario
5h 49m
1 stop
MCI1:49 pmKansas City
$210
Frontier
May 2
MCI2:51 pmKansas City
11h 04m
1 stop
ONT11:55 pmOntario
May 9
ONT6:00 amOntario
5h 49m
1 stop
MCI1:49 pmKansas City
$211
Frontier
May 8
MCI2:34 pmKansas City
21h 31m
1 stop
ONT10:05 amOntario
May 16
ONT6:00 amOntario
5h 49m
1 stop
MCI1:49 pmKansas City
$222

American Airlines flights from Kansas City to Ontario

Our best American Airlines deals on Kansas City to Ontario flight tickets
American Airlines
Apr 11
MCI11:05 amKansas City
10h 29m
2 stops
ONT7:34 pmOntario
Apr 18
ONT2:08 pmOntario
7h 59m
1 stop
MCI12:07 amKansas City
$322
American Airlines
Apr 11
MCI5:00 amKansas City
8h 34m
2 stops
ONT11:34 amOntario
Apr 18
ONT12:19 pmOntario
8h 31m
2 stops
MCI10:50 pmKansas City
$327
American Airlines
Apr 8
MCI10:56 amKansas City
7h 26m
2 stops
ONT4:22 pmOntario
Apr 29
ONT11:59 pmOntario
6h 55m
1 stop
MCI8:54 amKansas City
$336

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 March 18, 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

Sat 5/16

2:34 pm-11:49 pm

1 stop11h 15m

Ontario

Wed 5/20

6:00 am-1:49 pm

1 stop5h 49m

$210

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

$211

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Fri 5/8

2:34 pm-10:05 am

1 stop21h 31m

Ontario

Sat 5/16

6:00 am-1:49 pm

1 stop5h 49m

$222

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Mon 5/4

2:15 pm-11:55 pm

1 stop11h 40m

Ontario

Wed 5/6

6:00 am-1:49 pm

1 stop5h 49m

$230

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Thu 4/30

2:15 pm-7:31 am

1 stop19h 16m

Ontario

Fri 5/1

5:33 pm-2:06 pm

1 stop18h 33m

$240

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Thu 4/30

2:15 pm-7:31 am

1 stop19h 16m

Ontario

Mon 5/4

5:33 pm-1:49 pm

1 stop18h 16m

$241

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Mon 4/27

2:15 pm-11:55 pm

1 stop11h 40m

Ontario

Fri 5/1

5:33 pm-2:06 pm

1 stop18h 33m

$243
Quickest round-trip

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Sat 4/11

8:43 pm-11:56 pm

1 stop5h 13m

Ontario

Fri 4/17

12:59 am-2:06 pm

1 stop11h 07m

$250

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Sat 4/11

8:43 pm-11:56 pm

1 stop5h 13m

Ontario

Fri 4/17

5:33 pm-2:06 pm

1 stop18h 33m

$252

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Fri 5/1

2:15 pm-11:55 pm

1 stop11h 40m

Ontario

Mon 5/4

5:33 pm-1:49 pm

1 stop18h 16m

$259

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 March 2026, prices for Kansas City to Ontario flights are approximately 48% 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 04m

Direct flights

None
The fastest flight from Kansas City to Ontario takes 5h 04m
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 04m.

  • 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
3,025 reviews
Search Frontier flights
United AirlinesPriceFrom $253Free CancellationRating
7.4
9,435 reviews
Search United Airlines flights
American AirlinesPriceFrom $284Free CancellationRating
7.1
11,468 reviews
Search American Airlines flights
SouthwestPriceFrom $289Free CancellationRating
8.0
4,320 reviews
Search Southwest flights

  • Southwest Flights From Kansas City to Ontario

    Southwest flies from Kansas City to Ontario around 2 times per week, with 4,320 momondo users rating the airline 8.0/10. The cheapest Southwest deal from Kansas City to Ontario in the last 72 hours was $289 (round-trip), much lower than the average airfare cost of $394 for Southwest flights on this route.

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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