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Cheap flights from Kansas City to Los Angeles from $67

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 11/11. 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
8:32 pm - 10:30 am
MCI
-
ONT
15h 58m
1 stop
Frontier Logo
11:45 am - 7:37 pm
ONT
-
MCI
5h 52m
1 stop
$128Frontier
Wed, Sep 23 - Wed, Sep 30
Frontier Logo
8:32 pm - 10:30 am
MCI
-
ONT
15h 58m
1 stop
Frontier Logo
11:45 am - 7:37 pm
ONT
-
MCI
5h 52m
1 stop
$130Frontier
Wed, Sep 23 - Wed, Sep 30
Multiple Airlines Logo
2:48 pm - 8:24 pm
MCI
-
ONT
7h 36m
1 stop
Multiple Airlines Logo
6:00 am - 12:53 pm
ONT
-
MCI
4h 53m
1 stop
$312Multiple Airlines
Wed, Aug 26 - Sat, Aug 29
Multiple Airlines Logo
1:34 pm - 7:03 pm
MCI
-
ONT
7h 29m
1 stop
Multiple Airlines Logo
11:45 am - 7:37 pm
ONT
-
MCI
5h 52m
1 stop
$313Multiple Airlines
Tue, Sep 1 - Tue, Sep 15
Southwest Logo
6:20 am - 9:20 am
MCI
-
ONT
5h 00m
1 stop
Southwest Logo
9:40 am - 5:00 pm
ONT
-
MCI
5h 20m
1 stop
$371Southwest
Thu, Aug 20 - Tue, Aug 25
American Airlines Logo
9:50 am - 1:31 pm
MCI
-
ONT
5h 41m
1 stop
American Airlines Logo
10:29 am - 6:34 pm
ONT
-
MCI
6h 05m
1 stop
$371American Airlines
Thu, Aug 20 - Tue, Aug 25
American Airlines Logo
5:24 pm - 10:37 pm
MCI
-
ONT
7h 13m
1 stop
American Airlines Logo
1:04 pm - 11:24 pm
ONT
-
MCI
8h 20m
2 stops
$376American Airlines
Wed, Sep 9 - Tue, Sep 15
United Airlines Logo
6:00 am - 12:12 pm
MCI
-
ONT
8h 12m
2 stops
United Airlines Logo
6:08 am - 2:33 pm
ONT
-
MCI
6h 25m
1 stop
$376United Airlines
Thu, Aug 20 - Tue, Aug 25
Southwest Logo
4:30 pm - 9:00 pm
MCI
-
ONT
6h 30m
2 stops
Southwest Logo
8:35 am - 5:25 pm
ONT
-
MCI
6h 50m
2 stops
$381Southwest
Wed, Sep 23 - Wed, Sep 30
United Airlines Logo
6:00 am - 12:12 pm
MCI
-
ONT
8h 12m
2 stops
United Airlines Logo
5:00 am - 4:07 pm
ONT
-
MCI
9h 07m
2 stops
$395United Airlines
Thu, Aug 20 - Tue, Aug 25

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Frontier flights from Kansas City to Ontario

Our best Frontier deals on Kansas City to Ontario flight tickets
Frontier
Sep 23
MCI8:32 pmKansas City
15h 58m
1 stop
ONT10:30 amOntario
Sep 30
ONT11:45 amOntario
5h 52m
1 stop
MCI7:37 pmKansas City
$128
Frontier
Sep 23
MCI8:32 pmKansas City
15h 58m
1 stop
ONT10:30 amOntario
Sep 30
ONT11:45 amOntario
5h 52m
1 stop
MCI7:37 pmKansas City
$130
Frontier
Sep 22
MCI8:32 pmKansas City
15h 58m
1 stop
ONT10:30 amOntario
Sep 24
ONT11:45 amOntario
5h 52m
1 stop
MCI7:37 pmKansas City
$140

United Airlines flights from Kansas City to Ontario

Our best United Airlines deals on Kansas City to Ontario flight tickets
United Airlines
Aug 13
MCI1:43 pmKansas City
8h 18m
2 stops
ONT8:01 pmOntario
Aug 20
ONT6:08 amOntario
8h 03m
2 stops
MCI4:11 pmKansas City
$552
United Airlines
Aug 13
MCI3:29 pmKansas City
6h 32m
1 stop
ONT8:01 pmOntario
Aug 19
ONT6:08 amOntario
6h 25m
1 stop
MCI2:33 pmKansas City
$567
United Airlines
Aug 12
MCI11:32 amKansas City
8h 44m
2 stops
ONT6:16 pmOntario
Aug 13
ONT6:08 amOntario
6h 25m
1 stop
MCI2:33 pmKansas City
$572

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 1, 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 9/23

8:32 pm-10:30 am

1 stop15h 58m

Ontario

Wed 9/30

11:45 am-7:37 pm

1 stop5h 52m

$128

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Wed 9/23

8:32 pm-10:30 am

1 stop15h 58m

Ontario

Wed 9/30

11:45 am-7:37 pm

1 stop5h 52m

$130

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Wed 8/26

2:48 pm-8:24 pm

1 stop7h 36m

Ontario

Sat 8/29

6:00 am-12:53 pm

1 stop4h 53m

$312

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Tue 9/1

1:34 pm-7:03 pm

1 stop7h 29m

Ontario

Tue 9/15

11:45 am-7:37 pm

1 stop5h 52m

$313
Quickest round-trip

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Thu 8/20

6:20 am-9:20 am

1 stop5h 00m

Ontario

Tue 8/25

9:40 am-5:00 pm

1 stop5h 20m

$371

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Thu 8/20

9:50 am-1:31 pm

1 stop5h 41m

Ontario

Tue 8/25

10:29 am-6:34 pm

1 stop6h 05m

$371

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Wed 9/9

5:24 pm-10:37 pm

1 stop7h 13m

Ontario

Tue 9/15

1:04 pm-11:24 pm

2 stops8h 20m

$376

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Thu 8/20

6:00 am-12:12 pm

2 stops8h 12m

Ontario

Tue 8/25

6:08 am-2:33 pm

1 stop6h 25m

$376

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Wed 9/23

4:30 pm-9:00 pm

2 stops6h 30m

Ontario

Wed 9/30

8:35 am-5:25 pm

2 stops6h 50m

$381

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Thu 8/20

6:00 am-12:12 pm

2 stops8h 12m

Ontario

Tue 8/25

5:00 am-4:07 pm

2 stops9h 07m

$395

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 $284 to $469.
The lowest price recently found on this route was $128.

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 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 $125Free CancellationRating
5.6
2,740 reviews
Search Frontier flights
United AirlinesPriceFrom $253Free CancellationRating
7.4
10,062 reviews
Search United Airlines flights
SouthwestPriceFrom $269Free CancellationRating
8.0
4,229 reviews
Search Southwest flights
American AirlinesPriceFrom $284Free CancellationRating
7.1
11,845 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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