Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

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 - 11:50 pmMCI  Kansas City-ONT Ontario
5h 07m1 stop Denver Intl
Frontier Logo
11:52 am - 7:47 pmONT  Ontario-MCI Kansas City
5h 55m1 stop Denver Intl
$179Frontier
Wed, Oct 21 - Wed, Oct 28
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
Sat, Oct 31 - Sat, Nov 7
Multiple Airlines Logo
8:43 pm - 11:50 pmMCI  Kansas City-ONT Ontario
5h 07m1 stop Denver Intl
Multiple Airlines Logo
2:13 pm - 11:59 pmONT  Ontario-MCI Kansas City
7h 46m1 stop Seattle/Tacoma Intl
$331Multiple Airlines
Mon, Oct 12 - Thu, Oct 15
Multiple Airlines Logo
8:43 pm - 10:29 amMCI  Kansas City-ONT Ontario
15h 46m1 stop Denver Intl
Multiple Airlines Logo
7:25 am - 5:18 pmONT  Ontario-MCI Kansas City
7h 53m1 stop Portland
$333Multiple Airlines
Fri, Oct 16 - Mon, Oct 19
United Airlines Logo
7:00 am - 11:58 amMCI  Kansas City-ONT Ontario
6h 58m1 stop San Francisco
United Airlines Logo
1:38 pm - 8:47 pmONT  Ontario-MCI Kansas City
5h 09m1 stop Denver Intl
$371United Airlines
Tue, Dec 22 - Thu, Dec 31
United Airlines Logo
6:05 pm - 10:53 pmMCI  Kansas City-ONT Ontario
6h 48m1 stop San Francisco
United Airlines Logo
5:00 am - 4:19 pmONT  Ontario-MCI Kansas City
9h 19m2 stops Denver Intl Chicago O'Hare Intl
$376United Airlines
Tue, Dec 22 - Thu, Dec 31
American Airlines Logo
8:15 am - 12:14 pmMCI  Kansas City-ONT Ontario
5h 59m1 stop Phoenix Sky Harbor Intl
American Airlines Logo
4:29 pm - 11:54 pmONT  Ontario-MCI Kansas City
5h 25m1 stop Phoenix Sky Harbor Intl
$393American Airlines
Wed, Oct 14 - Wed, Oct 14
Southwest Logo
5:35 pm - 8:50 pmMCI  Kansas City-ONT Ontario
5h 15m1 stop Las Vegas Harry Reid Intl
Southwest Logo
11:00 am - 6:00 pmONT  Ontario-MCI Kansas City
5h 00m1 stop Las Vegas Harry Reid Intl
$413Southwest
Tue, Feb 9 - Tue, Mar 2
Southwest Logo
2:05 pm - 7:45 pmMCI  Kansas City-ONT Ontario
7h 40m2 stops Denver Intl Phoenix Sky Harbor Intl
Southwest Logo
9:15 am - 7:20 pmONT  Ontario-MCI Kansas City
8h 05m2 stops Sacramento Intl San Diego
$423Southwest
Tue, Feb 9 - Tue, Mar 2
American Airlines Logo
9:48 am - 1:30 pmMCI  Kansas City-ONT Ontario
5h 42m1 stop Dallas/Fort Worth
American Airlines Logo
11:59 pm - 8:57 amONT  Ontario-MCI Kansas City
6h 58m1 stop Dallas/Fort Worth
$424American Airlines
Sat, Oct 17 - Sun, Oct 18

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Frontier flights from Kansas City to Ontario

Our best Frontier deals on Kansas City to Ontario flight tickets
Frontier
Oct 21
MCI8:43 pmKansas City
5h 07m
1 stop
ONT11:50 pmOntario
Oct 28
ONT11:52 amOntario
5h 55m
1 stop
MCI7:47 pmKansas City
$179
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 27
MCI8:43 pmKansas City
5h 08m
1 stop
ONT11:51 pmOntario
Nov 3
ONT11:52 amOntario
5h 55m
1 stop
MCI7:47 pmKansas City
$181

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

Kansas CityOntario

MCI Kansas City - ONT Ontario

MCIONT

Kansas City

Wed 10/21

8:43 pm-11:50 pm

1 stop5h 07m

Ontario

Wed 10/28

11:52 am-7:47 pm

1 stop5h 55m

$179

Kansas CityOntario

MCI Kansas City - ONT Ontario

MCIONT

Kansas City

Sat 10/31

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

Mon 10/12

8:43 pm-11:50 pm

1 stop5h 07m

Ontario

Thu 10/15

2:13 pm-11:59 pm

1 stop7h 46m

$331

Kansas CityOntario

MCI Kansas City - ONT Ontario

MCIONT

Kansas City

Fri 10/16

8:43 pm-10:29 am

1 stop15h 46m

Ontario

Mon 10/19

7:25 am-5:18 pm

1 stop7h 53m

$333

Kansas CityOntario

MCI Kansas City - ONT Ontario

MCIONT

Kansas City

Tue 12/22

7:00 am-11:58 am

1 stop6h 58m

Ontario

Thu 12/31

1:38 pm-8:47 pm

1 stop5h 09m

$371

Kansas CityOntario

MCI Kansas City - ONT Ontario

MCIONT

Kansas City

Tue 12/22

6:05 pm-10:53 pm

1 stop6h 48m

Ontario

Thu 12/31

5:00 am-4:19 pm

2 stops9h 19m

$376

Kansas CityOntario

MCI Kansas City - ONT Ontario

MCIONT

Kansas City

Wed 10/14

8:15 am-12:14 pm

1 stop5h 59m

Ontario

Wed 10/14

4:29 pm-11:54 pm

1 stop5h 25m

$393
Quickest round-trip

Kansas CityOntario

MCI Kansas City - ONT Ontario

MCIONT

Kansas City

Tue 2/9

5:35 pm-8:50 pm

1 stop5h 15m

Ontario

Tue 3/2

11:00 am-6:00 pm

1 stop5h 00m

$413

Kansas CityOntario

MCI Kansas City - ONT Ontario

MCIONT

Kansas City

Tue 2/9

2:05 pm-7:45 pm

2 stops7h 40m

Ontario

Tue 3/2

9:15 am-7:20 pm

2 stops8h 05m

$423

Kansas CityOntario

MCI Kansas City - ONT Ontario

MCIONT

Kansas City

Sat 10/17

9:48 am-1:30 pm

1 stop5h 42m

Ontario

Sun 10/18

11:59 pm-8:57 am

1 stop6h 58m

$424

Flights are sorted by cheapest round-trip flights first.

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

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 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 $268 to $381.
The lowest price recently found on this route was $179.

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 $179.
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
2,608 reviews
Search Frontier flights
American AirlinesPriceFrom $248Free CancellationRating
7.1
12,049 reviews
Search American Airlines flights
United AirlinesPriceFrom $253Free CancellationRating
7.4
10,202 reviews
Search United Airlines flights
SouthwestPriceFrom $316Free CancellationRating
8.0
4,194 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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sun 10/11
Sun 10/18
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States