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Cheap flights from Kansas City to Los Angeles from $90

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
8:43 pm - 11:51 pmMCI  Kansas City-ONT Ontario
5h 08m1 stop Denver Intl
Frontier Logo
11:52 am - 7:47 pmONT  Ontario-MCI Kansas City
5h 55m1 stop Denver Intl
$180Frontier
Wed, Nov 4 - Sat, Nov 7
Frontier Logo
8:32 pm - 11:47 pmMCI  Kansas City-ONT Ontario
5h 15m1 stop Denver Intl
Frontier Logo
11:45 am - 7:37 pmONT  Ontario-MCI Kansas City
5h 52m1 stop Denver Intl
$180Frontier
Tue, Oct 6 - Wed, Oct 7
American Airlines Logo
8:15 am - 12:14 pmMCI  Kansas City-ONT Ontario
5h 59m1 stop Phoenix Sky Harbor Intl
American Airlines Logo
2:22 pm - 9:57 pmONT  Ontario-MCI Kansas City
5h 35m1 stop Dallas/Fort Worth
$254American Airlines
Sat, Oct 17 - Sat, Oct 24
American Airlines Logo
9:48 am - 1:30 pmMCI  Kansas City-ONT Ontario
5h 42m1 stop Dallas/Fort Worth
American Airlines Logo
2:22 pm - 9:57 pmONT  Ontario-MCI Kansas City
5h 35m1 stop Dallas/Fort Worth
$255American Airlines
Sat, Oct 17 - Sat, Oct 24
Southwest Logo
6:05 am - 9:00 amMCI  Kansas City-ONT Ontario
4h 55m1 stop Phoenix Sky Harbor Intl
Southwest Logo
12:40 pm - 10:50 pmONT  Ontario-MCI Kansas City
8h 10m1 stop Houston Hobby
$256Southwest
Sat, Oct 17 - Wed, Oct 28
Delta Logo
5:40 am - 11:06 amMCI  Kansas City-ONT Ontario
7h 26m1 stop Atlanta Hartsfield-Jackson
Delta Logo
11:56 am - 11:31 pmONT  Ontario-MCI Kansas City
9h 35m1 stop Seattle/Tacoma Intl
$257Delta
Wed, Oct 14 - Tue, Oct 20
Delta Logo
5:59 pm - 11:55 pmMCI  Kansas City-ONT Ontario
7h 56m1 stop Salt Lake City
Delta Logo
5:03 pm - 12:17 amONT  Ontario-MCI Kansas City
5h 14m1 stop Salt Lake City
$257Delta
Tue, Oct 13 - Tue, Oct 20
United Airlines Logo
5:24 pm - 8:58 pmMCI  Kansas City-ONT Ontario
5h 34m1 stop Denver Intl
United Airlines Logo
8:03 am - 10:35 pmONT  Ontario-MCI Kansas City
12h 32m2 stops San Francisco Houston George Bush Intcntl
$350United Airlines
Sat, Oct 17 - Sat, Oct 24
Southwest Logo
2:55 pm - 9:05 pmMCI  Kansas City-ONT Ontario
8h 10m2 stops Dallas Love Field San Jose
Southwest Logo
1:55 pm - 9:20 pmONT  Ontario-MCI Kansas City
5h 25m1 stop Denver Intl
$354Southwest
Thu, Dec 3 - Mon, Dec 7
United Airlines Logo
11:25 am - 6:44 pmMCI  Kansas City-ONT Ontario
9h 19m1 stop Chicago O'Hare Intl
United Airlines Logo
6:53 pm - 8:42 amONT  Ontario-MCI Kansas City
11h 49m2 stops San Francisco Chicago O'Hare Intl
$397United Airlines
Sat, Feb 6 - Mon, Feb 15

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Frontier flights from Kansas City to Ontario

Our best Frontier deals on Kansas City to Ontario flight tickets
Frontier
Oct 6
MCI8:32 pmKansas City
5h 15m
1 stop
ONT11:47 pmOntario
Oct 7
ONT11:45 amOntario
5h 52m
1 stop
MCI7:37 pmKansas City
$180
Frontier
Oct 5
MCI8:32 pmKansas City
15h 58m
1 stop
ONT10:30 amOntario
Oct 7
ONT11:45 amOntario
5h 52m
1 stop
MCI7:37 pmKansas City
$186
Frontier
Oct 21
MCI8:43 pmKansas City
5h 07m
1 stop
ONT11:50 pmOntario
Nov 5
ONT6:25 amOntario
11h 22m
1 stop
MCI7:47 pmKansas City
$196

American Airlines flights from Kansas City to Ontario

Our best American Airlines deals on Kansas City to Ontario flight tickets
American Airlines
Oct 17
MCI8:15 amKansas City
5h 59m
1 stop
ONT12:14 pmOntario
Oct 24
ONT2:22 pmOntario
5h 35m
1 stop
MCI9:57 pmKansas City
$254
American Airlines
Oct 17
MCI9:48 amKansas City
5h 42m
1 stop
ONT1:30 pmOntario
Oct 24
ONT2:22 pmOntario
5h 35m
1 stop
MCI9:57 pmKansas City
$255
American Airlines
Sep 23
MCI5:28 amKansas City
8h 38m
2 stops
ONT12:06 pmOntario
Oct 3
ONT8:25 amOntario
6h 14m
1 stop
MCI4:39 pmKansas City
$470

momondo Fare Finder

 
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
Quickest round-trip

Kansas CityOntario

MCI Kansas City - ONT Ontario

MCIONT

Kansas City

Wed 11/4

8:43 pm-11:51 pm

1 stop5h 08m

Ontario

Sat 11/7

11:52 am-7:47 pm

1 stop5h 55m

$180

Kansas CityOntario

MCI Kansas City - ONT Ontario

MCIONT

Kansas City

Tue 10/6

8:32 pm-11:47 pm

1 stop5h 15m

Ontario

Wed 10/7

11:45 am-7:37 pm

1 stop5h 52m

$180

Kansas CityOntario

MCI Kansas City - ONT Ontario

MCIONT

Kansas City

Sat 10/17

8:15 am-12:14 pm

1 stop5h 59m

Ontario

Sat 10/24

2:22 pm-9:57 pm

1 stop5h 35m

$254

Kansas CityOntario

MCI Kansas City - ONT Ontario

MCIONT

Kansas City

Sat 10/17

9:48 am-1:30 pm

1 stop5h 42m

Ontario

Sat 10/24

2:22 pm-9:57 pm

1 stop5h 35m

$255

Kansas CityOntario

MCI Kansas City - ONT Ontario

MCIONT

Kansas City

Sat 10/17

6:05 am-9:00 am

1 stop4h 55m

Ontario

Wed 10/28

12:40 pm-10:50 pm

1 stop8h 10m

$256

Kansas CityOntario

MCI Kansas City - ONT Ontario

MCIONT

Kansas City

Wed 10/14

5:40 am-11:06 am

1 stop7h 26m

Ontario

Tue 10/20

11:56 am-11:31 pm

1 stop9h 35m

$257

Kansas CityOntario

MCI Kansas City - ONT Ontario

MCIONT

Kansas City

Tue 10/13

5:59 pm-11:55 pm

1 stop7h 56m

Ontario

Tue 10/20

5:03 pm-12:17 am

1 stop5h 14m

$257

Kansas CityOntario

MCI Kansas City - ONT Ontario

MCIONT

Kansas City

Sat 10/17

5:24 pm-8:58 pm

1 stop5h 34m

Ontario

Sat 10/24

8:03 am-10:35 pm

2 stops12h 32m

$350

Kansas CityOntario

MCI Kansas City - ONT Ontario

MCIONT

Kansas City

Thu 12/3

2:55 pm-9:05 pm

2 stops8h 10m

Ontario

Mon 12/7

1:55 pm-9:20 pm

1 stop5h 25m

$354

Kansas CityOntario

MCI Kansas City - ONT Ontario

MCIONT

Kansas City

Sat 2/6

11:25 am-6:44 pm

1 stop9h 19m

Ontario

Mon 2/15

6:53 pm-8:42 am

2 stops11h 49m

$397

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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?

Prices are currently low for flights on this route.

Typical prices usually range from $269 to $381.
The lowest price recently found on this route was $180.

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 $293. 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 $298.

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

As of September 2026, prices for Kansas City to Ontario flights are approximately 158% 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

Best Price Found

$90

Fastest flight time

5h 07m

Direct flights

None
The best one-way flight to Ontario from Kansas City in the past 72 hours is $90. The best round-trip flight deal from Kansas City to Ontario found on momondo in the last 72 hours is $180.
The fastest flight from Kansas City to Ontario takes 5h 07m
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 07m.

  • 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 $125Free CancellationRating
5.6
2,600 reviews
Search Frontier flights
United AirlinesPriceFrom $253Free CancellationRating
7.4
10,208 reviews
Search United Airlines flights
American AirlinesPriceFrom $308Free CancellationRating
7.1
12,056 reviews
Search American Airlines flights
SouthwestPriceFrom $316Free CancellationRating
8.0
4,190 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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