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Cheap flights from Kansas City to Los Angeles from $74

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 9/5. 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
1:45 pm - 11:50 pm
MCI
-
ONT
12h 05m
1 stop
Frontier Logo
7:56 pm - 1:20 pm
ONT
-
MCI
15h 24m
1 stop
$155Frontier
Wed, Aug 12 - Wed, Aug 19
Frontier Logo
2:17 pm - 1:57 pm
MCI
-
ONT
25h 40m
1 stop
Frontier Logo
2:55 pm - 1:22 pm
ONT
-
MCI
20h 27m
1 stop
$174Frontier
Tue, Sep 22 - Tue, Sep 29
Frontier Logo
11:26 am - 10:04 am
MCI
-
ONT
24h 38m
2 stops
Frontier Logo
7:56 pm - 1:22 pm
ONT
-
MCI
15h 26m
1 stop
$224Frontier
Wed, Sep 2 - Tue, Sep 8
Frontier Logo
1:45 pm - 10:04 am
MCI
-
ONT
22h 19m
1 stop
Frontier Logo
6:00 am - 1:00 pm
ONT
-
MCI
29h 00m
1 stop
$230Frontier
Fri, Aug 7 - Mon, Aug 10
Frontier Logo
1:45 pm - 8:03 am
MCI
-
ONT
20h 18m
2 stops
Frontier Logo
7:56 pm - 1:20 pm
ONT
-
MCI
15h 24m
1 stop
$231Frontier
Wed, Aug 12 - Wed, Aug 19
Frontier Logo
1:45 pm - 11:50 pm
MCI
-
ONT
12h 05m
1 stop
Frontier Logo
6:00 am - 10:41 am
ONT
-
MCI
26h 41m
2 stops
$233Frontier
Tue, Aug 11 - Tue, Aug 18
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
$244Frontier
Tue, Aug 11 - Sat, Aug 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
$247Frontier
Wed, Aug 5 - Wed, Aug 12
Southwest Logo
8:10 am - 2:45 pm
MCI
-
ONT
8h 35m
1 stop
Southwest Logo
7:50 am - 5:55 pm
ONT
-
MCI
8h 05m
1 stop
$249Southwest
Tue, Oct 27 - Tue, Nov 17
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
$251Frontier
Sat, Aug 8 - Tue, Aug 11

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Frontier flights from Kansas City to Ontario

Our best Frontier deals on Kansas City to Ontario flight tickets
Frontier
Aug 12
MCI1:45 pmKansas City
12h 05m
1 stop
ONT11:50 pmOntario
Aug 19
ONT7:56 pmOntario
15h 24m
1 stop
MCI1:20 pmKansas City
$155
Frontier
Sep 22
MCI2:17 pmKansas City
25h 40m
1 stop
ONT1:57 pmOntario
Sep 29
ONT2:55 pmOntario
20h 27m
1 stop
MCI1:22 pmKansas City
$174
Frontier
Sep 2
MCI11:26 amKansas City
24h 38m
2 stops
ONT10:04 amOntario
Sep 8
ONT7:56 pmOntario
15h 26m
1 stop
MCI1:22 pmKansas City
$224

Southwest flights from Kansas City to Ontario

Our best Southwest deals on Kansas City to Ontario flight tickets
Southwest
Oct 27
MCI8:10 amKansas City
8h 35m
1 stop
ONT2:45 pmOntario
Nov 17
ONT7:50 amOntario
8h 05m
1 stop
MCI5:55 pmKansas City
$249
Southwest
Aug 8
MCI5:40 amKansas City
7h 35m
2 stops
ONT11:15 amOntario
Aug 11
ONT1:50 pmOntario
5h 20m
1 stop
MCI9:10 pmKansas City
$255
Southwest
Aug 14
MCI7:15 pmKansas City
4h 50m
1 stop
ONT10:05 pmOntario
Aug 19
ONT6:40 amOntario
6h 45m
1 stop
MCI3:25 pmKansas City
$282

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 July 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

Cheapest round-trip

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Wed 8/12

1:45 pm-11:50 pm

1 stop12h 05m

Ontario

Wed 8/19

7:56 pm-1:20 pm

1 stop15h 24m

$155

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Tue 9/22

2:17 pm-1:57 pm

1 stop25h 40m

Ontario

Tue 9/29

2:55 pm-1:22 pm

1 stop20h 27m

$174

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Wed 9/2

11:26 am-10:04 am

2 stops24h 38m

Ontario

Tue 9/8

7:56 pm-1:22 pm

1 stop15h 26m

$224

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Fri 8/7

1:45 pm-10:04 am

1 stop22h 19m

Ontario

Mon 8/10

6:00 am-1:00 pm

1 stop29h 00m

$230

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Wed 8/12

1:45 pm-8:03 am

2 stops20h 18m

Ontario

Wed 8/19

7:56 pm-1:20 pm

1 stop15h 24m

$231

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Tue 8/11

1:45 pm-11:50 pm

1 stop12h 05m

Ontario

Tue 8/18

6:00 am-10:41 am

2 stops26h 41m

$233

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Tue 8/11

1:45 pm-11:50 pm

1 stop12h 05m

Ontario

Sat 8/15

6:00 am-1:00 pm

1 stop5h 00m

$244

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Wed 8/5

1:45 pm-11:50 pm

1 stop12h 05m

Ontario

Wed 8/12

6:00 am-1:00 pm

1 stop5h 00m

$247
Quickest round-trip

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Tue 10/27

8:10 am-2:45 pm

1 stop8h 35m

Ontario

Tue 11/17

7:50 am-5:55 pm

1 stop8h 05m

$249

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Sat 8/8

1:45 pm-11:50 pm

1 stop12h 05m

Ontario

Tue 8/11

6:00 am-1:00 pm

1 stop5h 00m

$251

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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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, September 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 $318. If you aren’t able to travel during the month of September, then book flights to Ontario from Kansas City during October instead. Flights to Ontario in October, while not as cheap as those in September, still average around $319.

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

As of July 2026, prices for Kansas City to Ontario flights are approximately 37% 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 15m

Direct flights

None
The fastest flight from Kansas City to Ontario takes 5h 15m
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 15m.

  • 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
2,808 reviews
Search Frontier flights
United AirlinesPriceFrom $253Free CancellationRating
7.4
9,989 reviews
Search United Airlines flights
SouthwestPriceFrom $269Free CancellationRating
8.0
4,244 reviews
Search Southwest flights
American AirlinesPriceFrom $284Free CancellationRating
7.1
11,809 reviews
Search American Airlines 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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