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Cheap flights from Kansas City to Los Angeles from $79

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
1:38 pm - 11:50 pmMCI  Kansas City-ONT Ontario
12h 12m1 stop Denver Intl
Frontier Logo
11:45 am - 7:37 pmONT  Ontario-MCI Kansas City
5h 52m1 stop Denver Intl
$155Frontier
Sat, Sep 5 - Fri, Sep 11
Frontier Logo
1:38 pm - 11:50 pmMCI  Kansas City-ONT Ontario
12h 12m1 stop Denver Intl
Frontier Logo
11:45 am - 7:37 pmONT  Ontario-MCI Kansas City
5h 52m1 stop Denver Intl
$207Frontier
Sat, Sep 5 - Sat, Sep 12
Multiple Airlines Logo
7:00 am - 2:09 pmMCI  Kansas City-ONT Ontario
9h 09m1 stop Seattle/Tacoma Intl
Multiple Airlines Logo
11:45 am - 7:37 pmONT  Ontario-MCI Kansas City
5h 52m1 stop Denver Intl
$313Multiple Airlines
Tue, Sep 1 - Tue, Sep 15
Multiple Airlines Logo
2:53 pm - 8:24 pmMCI  Kansas City-ONT Ontario
7h 31m1 stop Portland
Multiple Airlines Logo
11:45 am - 7:37 pmONT  Ontario-MCI Kansas City
5h 52m1 stop Denver Intl
$313Multiple Airlines
Fri, Sep 11 - Tue, Sep 15
American Airlines Logo
9:49 am - 1:53 pmMCI  Kansas City-ONT Ontario
6h 04m1 stop Dallas/Fort Worth
American Airlines Logo
1:04 pm - 8:59 pmONT  Ontario-MCI Kansas City
5h 55m1 stop Phoenix Sky Harbor Intl
$372American Airlines
Sat, Sep 5 - Fri, Sep 11
American Airlines Logo
9:49 am - 1:53 pmMCI  Kansas City-ONT Ontario
6h 04m1 stop Dallas/Fort Worth
American Airlines Logo
1:04 pm - 8:59 pmONT  Ontario-MCI Kansas City
5h 55m1 stop Phoenix Sky Harbor Intl
$373American Airlines
Sat, Sep 5 - Fri, Sep 11
Southwest Logo
4:30 pm - 9:00 pmMCI  Kansas City-ONT Ontario
6h 30m2 stops Denver Intl Las Vegas Harry Reid Intl
Southwest Logo
7:45 am - 4:30 pmONT  Ontario-MCI Kansas City
6h 45m2 stops Las Vegas Harry Reid Intl Denver Intl
$403Southwest
Wed, Sep 23 - Wed, Sep 30
Southwest Logo
10:20 am - 3:05 pmMCI  Kansas City-ONT Ontario
6h 45m2 stops Las Vegas Harry Reid Intl Phoenix Sky Harbor Intl
Southwest Logo
5:40 am - 1:50 pmONT  Ontario-MCI Kansas City
6h 10m2 stops Las Vegas Harry Reid Intl Denver Intl
$407Southwest
Thu, Aug 27 - Sat, Aug 29
United Airlines Logo
5:13 pm - 8:53 pmMCI  Kansas City-ONT Ontario
5h 40m1 stop Denver Intl
United Airlines Logo
6:08 am - 6:30 pmONT  Ontario-MCI Kansas City
10h 22m2 stops San Francisco Denver Intl
$445United Airlines
Thu, Aug 20 - Wed, Aug 26
United Airlines Logo
6:00 am - 12:12 pmMCI  Kansas City-ONT Ontario
8h 12m2 stops Denver Intl San Francisco
United Airlines Logo
5:00 am - 4:07 pmONT  Ontario-MCI Kansas City
9h 07m2 stops Denver Intl Chicago O'Hare Intl
$450United Airlines
Thu, Aug 20 - Wed, Aug 26

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Frontier flights from Kansas City to Ontario

Our best Frontier deals on Kansas City to Ontario flight tickets
Frontier
Sep 5
MCI1:38 pmKansas City
12h 12m
1 stop
ONT11:50 pmOntario
Sep 11
ONT11:45 amOntario
5h 52m
1 stop
MCI7:37 pmKansas City
$155
Frontier
Sep 5
MCI1:38 pmKansas City
12h 12m
1 stop
ONT11:50 pmOntario
Sep 12
ONT11:45 amOntario
5h 52m
1 stop
MCI7:37 pmKansas City
$207
Frontier
Sep 5
MCI1:38 pmKansas City
12h 12m
1 stop
ONT11:50 pmOntario
Sep 11
ONT6:15 amOntario
11h 22m
1 stop
MCI7:37 pmKansas City
$222

Alaska Airlines flights from Kansas City to Ontario

Our best Alaska Airlines deals on Kansas City to Ontario flight tickets
Alaska Airlines
Aug 19
MCI2:48 pmKansas City
7h 36m
1 stop
ONT8:24 pmOntario
Aug 25
ONT12:00 pmOntario
9h 59m
1 stop
MCI11:59 pmKansas City
$371
Alaska Airlines
Aug 18
MCI6:02 amKansas City
9h 07m
1 stop
ONT1:09 pmOntario
Aug 22
ONT12:00 pmOntario
9h 59m
1 stop
MCI11:59 pmKansas City
$435
Alaska Airlines
Aug 18
MCI5:50 pmKansas City
8h 03m
1 stop
ONT11:53 pmOntario
Aug 21
ONT12:00 pmOntario
9h 59m
1 stop
MCI11:59 pmKansas City
$484

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 August 7, 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 Kansas City - ONT Ontario

MCIONT

Kansas City

Sat 9/5

1:38 pm-11:50 pm

1 stop12h 12m

Ontario

Fri 9/11

11:45 am-7:37 pm

1 stop5h 52m

$155

Kansas CityOntario

MCI Kansas City - ONT Ontario

MCIONT

Kansas City

Sat 9/5

1:38 pm-11:50 pm

1 stop12h 12m

Ontario

Sat 9/12

11:45 am-7:37 pm

1 stop5h 52m

$207

Kansas CityOntario

MCI Kansas City - ONT Ontario

MCIONT

Kansas City

Tue 9/1

7:00 am-2:09 pm

1 stop9h 09m

Ontario

Tue 9/15

11:45 am-7:37 pm

1 stop5h 52m

$313

Kansas CityOntario

MCI Kansas City - ONT Ontario

MCIONT

Kansas City

Fri 9/11

2:53 pm-8:24 pm

1 stop7h 31m

Ontario

Tue 9/15

11:45 am-7:37 pm

1 stop5h 52m

$313
Quickest round-trip

Kansas CityOntario

MCI Kansas City - ONT Ontario

MCIONT

Kansas City

Sat 9/5

9:49 am-1:53 pm

1 stop6h 04m

Ontario

Fri 9/11

1:04 pm-8:59 pm

1 stop5h 55m

$372

Kansas CityOntario

MCI Kansas City - ONT Ontario

MCIONT

Kansas City

Sat 9/5

9:49 am-1:53 pm

1 stop6h 04m

Ontario

Fri 9/11

1:04 pm-8:59 pm

1 stop5h 55m

$373

Kansas CityOntario

MCI Kansas City - ONT Ontario

MCIONT

Kansas City

Wed 9/23

4:30 pm-9:00 pm

2 stops6h 30m

Ontario

Wed 9/30

7:45 am-4:30 pm

2 stops6h 45m

$403

Kansas CityOntario

MCI Kansas City - ONT Ontario

MCIONT

Kansas City

Thu 8/27

10:20 am-3:05 pm

2 stops6h 45m

Ontario

Sat 8/29

5:40 am-1:50 pm

2 stops6h 10m

$407

Kansas CityOntario

MCI Kansas City - ONT Ontario

MCIONT

Kansas City

Thu 8/20

5:13 pm-8:53 pm

1 stop5h 40m

Ontario

Wed 8/26

6:08 am-6:30 pm

2 stops10h 22m

$445

Kansas CityOntario

MCI Kansas City - ONT Ontario

MCIONT

Kansas City

Thu 8/20

6:00 am-12:12 pm

2 stops8h 12m

Ontario

Wed 8/26

5:00 am-4:07 pm

2 stops9h 07m

$450

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 $290 to $737.
The lowest price recently found on this route was $155.

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 $346.

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

As of August 2026, prices for Kansas City to Ontario flights are approximately 5% 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 00m

Direct flights

None
The fastest flight from Kansas City to Ontario takes 5h 00m
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 00m.

  • 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
2,722 reviews
Search Frontier flights
American AirlinesPriceFrom $248Free CancellationRating
7.1
11,875 reviews
Search American Airlines flights
United AirlinesPriceFrom $253Free CancellationRating
7.4
10,081 reviews
Search United Airlines flights
SouthwestPriceFrom $269Free CancellationRating
8.0
4,216 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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