Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Kansas City to Los Angeles from $75

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 10/9. 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
0 bags

Discover deals from 900+ travel sites with momondo.

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

Find the cheapest flights from Kansas City to Los Angeles

Cheap round-trip flights

Frontier Logo
8:28 pm - 11:50 pmMCI-ONT
5h 22m1 stop
Frontier Logo
12:05 pm - 7:33 pmONT-MCI
5h 28m1 stop
$160Frontier
Find Deal
Fri, Oct 31 - Thu, Nov 6
Frontier Logo
7:02 pm - 11:50 pmMCI-ONT
6h 48m1 stop
Frontier Logo
6:53 am - 5:55 pmONT-MCI
9h 02m1 stop
$165Frontier
Find Deal
Wed, Oct 15 - Wed, Oct 22
American Airlines Logo
7:00 am - 11:57 amMCI-ONT
6h 57m1 stop
American Airlines Logo
2:54 pm - 11:07 pmONT-MCI
6h 13m1 stop
$217American Airlines
Find Deal
Tue, Sep 23 - Tue, Sep 30
American Airlines Logo
1:01 pm - 9:24 pmMCI-ONT
10h 23m1 stop
American Airlines Logo
6:10 am - 8:47 pmONT-MCI
12h 37m2 stops
$222American Airlines
Find Deal
Tue, Sep 23 - Tue, Sep 30
Logo
2:55 pm - 7:17 amMCI-ONT
18h 22m1 stop
Logo
9:16 am - 2:00 pmONT-MCI
26h 44m1 stop
$235
Find Deal
Sun, Sep 14 - Thu, Sep 18
Alaska Airlines Logo
7:00 am - 2:12 pmMCI-ONT
9h 12m1 stop
Alaska Airlines Logo
7:10 am - 4:01 pmONT-MCI
6h 51m1 stop
$236Alaska Airlines
Find Deal
Tue, Sep 16 - Sat, Sep 20
Logo
2:55 pm - 8:56 pmMCI-ONT
8h 01m1 stop
Logo
6:00 am - 2:00 pmONT-MCI
6h 00m1 stop
$238
Find Deal
Mon, Sep 15 - Thu, Sep 18
Alaska Airlines Logo
5:57 pm - 11:49 pmMCI-ONT
7h 52m1 stop
Alaska Airlines Logo
7:20 am - 3:54 pmONT-MCI
6h 34m1 stop
$252Alaska Airlines
Find Deal
Sat, Oct 25 - Tue, Nov 4
Hawaiian Airlines Logo
4:49 pm - 11:56 pmMCI-ONT
9h 07m1 stop
Hawaiian Airlines Logo
7:20 am - 3:54 pmONT-MCI
6h 34m1 stop
$269Hawaiian Airlines
Find Deal
Wed, Nov 5 - Tue, Nov 11
Hawaiian Airlines Logo
4:55 pm - 11:54 pmMCI-ONT
8h 59m1 stop
Hawaiian Airlines Logo
7:10 am - 4:01 pmONT-MCI
6h 51m1 stop
$271Hawaiian Airlines
Find Deal
Mon, Sep 8 - Tue, Sep 16

Hawaiian Airlines flights from Kansas City to Ontario

Our best Hawaiian Airlines deals on Kansas City to Ontario flight tickets
Hawaiian Airlines
Nov 5
MCI4:49 pmKansas City
9h 07m
1 stop
ONT11:56 pmOntario
Nov 11
ONT7:20 amOntario
6h 34m
1 stop
MCI3:54 pmKansas City
$269
Find similar
Hawaiian Airlines
Sep 8
MCI4:55 pmKansas City
8h 59m
1 stop
ONT11:54 pmOntario
Sep 16
ONT7:10 amOntario
6h 51m
1 stop
MCI4:01 pmKansas City
$271
Find similar
Hawaiian Airlines
Aug 21
MCI7:00 amKansas City
9h 09m
1 stop
ONT2:09 pmOntario
Aug 22
ONT7:10 amOntario
6h 51m
1 stop
MCI4:01 pmKansas City
$882
Find similar

United Airlines flights from Kansas City to Ontario

Our best United Airlines deals on Kansas City to Ontario flight tickets
United Airlines
Aug 30
MCI5:15 pmKansas City
5h 28m
1 stop
ONT8:43 pmOntario
Sep 1
ONT5:10 amOntario
5h 30m
1 stop
MCI12:40 pmKansas City
$502
Find similar
United Airlines
Aug 26
MCI5:15 pmKansas City
5h 28m
1 stop
ONT8:43 pmOntario
Aug 30
ONT6:04 amOntario
6h 09m
1 stop
MCI2:13 pmKansas City
$558
Find similar
United Airlines
Aug 28
MCI3:23 pmKansas City
9h 07m
1 stop
ONT10:30 pmOntario
Aug 31
ONT6:04 amOntario
6h 09m
1 stop
MCI2:13 pmKansas City
$597
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 August 18, 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 10/31

8:28 pm-11:50 pm

1 stop5h 22m

Ontario

Thu 11/6

12:05 pm-7:33 pm

1 stop5h 28m

$160

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Wed 10/15

7:02 pm-11:50 pm

1 stop6h 48m

Ontario

Wed 10/22

6:53 am-5:55 pm

1 stop9h 02m

$165

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Tue 9/23

7:00 am-11:57 am

1 stop6h 57m

Ontario

Tue 9/30

2:54 pm-11:07 pm

1 stop6h 13m

$217

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Tue 9/23

1:01 pm-9:24 pm

1 stop10h 23m

Ontario

Tue 9/30

6:10 am-8:47 pm

2 stops12h 37m

$222

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Sun 9/14

2:55 pm-7:17 am

1 stop18h 22m

Ontario

Thu 9/18

9:16 am-2:00 pm

1 stop26h 44m

$235

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Tue 9/16

7:00 am-2:12 pm

1 stop9h 12m

Ontario

Sat 9/20

7:10 am-4:01 pm

1 stop6h 51m

$236

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Mon 9/15

2:55 pm-8:56 pm

1 stop8h 01m

Ontario

Thu 9/18

6:00 am-2:00 pm

1 stop6h 00m

$238

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Sat 10/25

5:57 pm-11:49 pm

1 stop7h 52m

Ontario

Tue 11/4

7:20 am-3:54 pm

1 stop6h 34m

$252

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Wed 11/5

4:49 pm-11:56 pm

1 stop9h 07m

Ontario

Tue 11/11

7:20 am-3:54 pm

1 stop6h 34m

$269

Kansas CityOntario

MCI - ONT

MCIONT

Kansas City

Mon 9/8

4:55 pm-11:54 pm

1 stop8h 59m

Ontario

Tue 9/16

7:10 am-4:01 pm

1 stop6h 51m

$271

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 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 $346. 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 $361.

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 far in advance should I book a flight to Ontario?

You are more likely to see cheaper flights to Ontario from Kansas City when booking weeks ahead of your departure date. In general, you can expect to find flights to Ontario for around $386 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ontario from Kansas City for as low as $296 on momondo.

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

As of August 2025, prices for Kansas City to Ontario flights are approximately 82% 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

$75

Fastest flight time

5h 12m

Direct flights

None

Airports in Ontario

1 airport
The best one-way flight to Ontario from Kansas City in the past 72 hours is $75. The best round-trip flight deal from Kansas City to Ontario found on momondo in the last 72 hours is $160.
The fastest flight from Kansas City to Ontario takes 5h 12m
There are no direct flights from Kansas City to Ontario. Popular non-direct route for this connection is Kansas City Airport - Ontario Airport.
There is 1 airport near Ontario: Ontario (ONT)
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 12m.

  • 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 $107Free CancellationRating
5.8
3,212 reviews
Search Frontier flights
American AirlinesPriceFrom $284Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $311Free CancellationRating
8.0
4,246 reviews
Search Southwest flights
United AirlinesPriceFrom $370Free CancellationRating
7.4
8,925 reviews
Search United Airlines flights

  • Southwest Flights From Kansas City to Ontario

    Southwest flies from Kansas City to Ontario around 1 time per week, with 4,246 momondo users rating the airline 8.0/10. The cheapest Southwest deal from Kansas City to Ontario in the last 72 hours was $311 (round-trip), much lower than the average airfare cost of $403 for Southwest flights on this route.

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
Sat 8/23
Sat 8/30
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States