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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 2/18. 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
7:30 am - 3:44 pm
ONT
-
MCI
6h 14m1 stop
$134Frontier
Fri, Feb 6 - Wed, Feb 11
Frontier Logo
5:46 pm - 10:39 pm
MCI
-
ONT
6h 53m1 stop
Frontier Logo
6:00 am - 7:51 pm
ONT
-
MCI
11h 51m1 stop
$155Frontier
Wed, Feb 11 - Sat, Feb 14
Frontier Logo
5:46 pm - 10:39 pm
MCI
-
ONT
6h 53m1 stop
Frontier Logo
6:00 am - 7:51 pm
ONT
-
MCI
11h 51m1 stop
$182Frontier
Wed, Mar 4 - Mon, Mar 9
Frontier Logo
8:27 pm - 3:07 pm
MCI
-
ONT
20h 40m1 stop
Frontier Logo
6:20 am - 7:51 pm
ONT
-
MCI
11h 31m1 stop
$186Frontier
Mon, Jan 19 - Mon, Jan 26
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
$190Frontier
Fri, Jan 23 - Mon, Jan 26
Frontier Logo
8:45 pm - 10:12 pm
MCI
-
ONT
27h 27m1 stop
Frontier Logo
6:00 am - 7:41 pm
ONT
-
MCI
11h 41m1 stop
$194Frontier
Mon, Jan 5 - Mon, Jan 12
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
$196Frontier
Fri, Jan 23 - Mon, Jan 26
Frontier Logo
8:23 pm - 11:56 pm
MCI
-
ONT
5h 33m1 stop
Frontier Logo
6:00 am - 7:41 pm
ONT
-
MCI
11h 41m1 stop
$203Frontier
Thu, Jan 8 - Mon, Jan 12
Frontier Logo
8:46 pm - 11:59 pm
MCI
-
ONT
5h 13m1 stop
Frontier Logo
6:00 am - 7:51 pm
ONT
-
MCI
11h 51m1 stop
$217Frontier
Fri, Mar 6 - Thu, Mar 12
Multiple Airlines Logo
7:00 am - 7:22 pm
MCI
-
ONT
14h 22m1 stop
Multiple Airlines Logo
6:49 pm - 11:33 pm
ONT
-
MCI
26h 44m1 stop
$222Multiple Airlines
Thu, Jan 8 - Wed, Jan 14

American Airlines flights from Kansas City to Ontario

Our best American Airlines deals on Kansas City to Ontario flight tickets
American Airlines
Jan 12
MCI5:48 amKansas City
6h 20m
1 stop
ONT10:08 amOntario
Jan 20
ONT3:09 pmOntario
6h 03m
1 stop
MCI11:12 pmKansas City
$237
Find similar
American Airlines
Jan 8
MCI5:48 amKansas City
6h 20m
1 stop
ONT10:08 amOntario
Jan 14
ONT9:59 amOntario
10h 40m
2 stops
MCI10:39 pmKansas City
$242
Find similar
American Airlines
Jan 8
MCI1:56 pmKansas City
10h 17m
2 stops
ONT10:13 pmOntario
Jan 14
ONT9:59 amOntario
10h 40m
2 stops
MCI10:39 pmKansas City
$274
Find similar

Delta flights from Kansas City to Ontario

Our best Delta deals on Kansas City to Ontario flight tickets
Delta
Jan 20
MCI7:00 amKansas City
8h 56m
1 stop
ONT1:56 pmOntario
Jan 22
ONT6:00 amOntario
5h 58m
1 stop
MCI1:58 pmKansas City
$247
Find similar
Delta
Jan 8
MCI6:30 amKansas City
7h 46m
1 stop
ONT12:16 pmOntario
Jan 14
ONT6:00 amOntario
5h 58m
1 stop
MCI1:58 pmKansas City
$257
Find similar
Delta
May 15
MCI6:15 pmKansas City
7h 29m
1 stop
ONT11:44 pmOntario
May 17
ONT5:05 pmOntario
5h 15m
1 stop
MCI12:20 amKansas City
$427
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 December 11, 2025.
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 2/6

8:41 pm-11:24 pm

1 stop28h 43m

Ontario

Wed 2/11

7:30 am-3:44 pm

1 stop6h 14m

$134

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Wed 2/11

5:46 pm-10:39 pm

1 stop6h 53m

Ontario

Sat 2/14

6:00 am-7:51 pm

1 stop11h 51m

$155

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Wed 3/4

5:46 pm-10:39 pm

1 stop6h 53m

Ontario

Mon 3/9

6:00 am-7:51 pm

1 stop11h 51m

$182

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Mon 1/19

8:27 pm-3:07 pm

1 stop20h 40m

Ontario

Mon 1/26

6:20 am-7:51 pm

1 stop11h 31m

$186

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Fri 1/23

8:41 pm-12:20 am

1 stop5h 39m

Ontario

Mon 1/26

6:20 am-7:51 pm

1 stop11h 31m

$190

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Mon 1/5

8:45 pm-10:12 pm

1 stop27h 27m

Ontario

Mon 1/12

6:00 am-7:41 pm

1 stop11h 41m

$194

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Fri 1/23

8:41 pm-12:20 am

1 stop5h 39m

Ontario

Mon 1/26

6:20 am-7:51 pm

1 stop11h 31m

$196

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Thu 1/8

8:23 pm-11:56 pm

1 stop5h 33m

Ontario

Mon 1/12

6:00 am-7:41 pm

1 stop11h 41m

$203

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Fri 3/6

8:46 pm-11:59 pm

1 stop5h 13m

Ontario

Thu 3/12

6:00 am-7:51 pm

1 stop11h 51m

$217

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Thu 1/8

7:00 am-7:22 pm

1 stop14h 22m

Ontario

Wed 1/14

6:49 pm-11:33 pm

1 stop26h 44m

$222

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.

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Wednesday when prices can be found for as low as $325. This is often the case because there is less demand to fly during this day of the week. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Kansas City to Ontario for around $401.

What is the cheapest time of day to depart on your flight to Ontario?

In the evening is the cheapest time of day to fly from Kansas City to Ontario when you can find flight prices for as low as $185. Flying to Ontario in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $386 on average. Flights to Ontario from Kansas City in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

As of December 2025, prices for Kansas City to Ontario flights are approximately 18% 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
5.8
3,084 reviews
Search Frontier flights
United AirlinesPriceFrom $284Free CancellationRating
7.4
9,095 reviews
Search United Airlines flights
SouthwestPriceFrom $290Free CancellationRating
7.9
4,252 reviews
Search Southwest flights
American AirlinesPriceFrom $298Free CancellationRating
7.2
11,048 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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