Cheap flights from St. Louis to Kansas City (STL - MCI) from $45

This is the cheapest one-way flight price, found on 9/27. Prices may vary by date and flight preferences.
STL — MCI
Oct 3 — Oct 101

How to find the cheapest flight from St. Louis (STL) to Kansas City (MCI)

All the information you need to plan the best STL to MCI flight in 2023: compare St. Louis to Kansas City flight prices with the expected peak season, weather and rainfall in Kansas City.

Popular in

April

Cheapest in

August

Round-trip from

$317

One-way from

$140
High demand for flights, 57% potential price rise
Best time to find cheap flights, 67% potential price drop
From Lambert-St Louis to Kansas City
One-way flight from Lambert-St Louis to Kansas City

STL - MKC

Price

$317 - $7,641

MKC

Temperature

28.4 - 78.8 °F

MKC

Rainfall

1.1 - 5.2 inches

When is the cheapest time to fly from St. Louis to Kansas City (STL - MCI)?

When flying from St. Louis to Kansas City, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap United Airlines flights from St. Louis to Kansas City

Consider these cheap United Airlines flights we've found departing from St. Louis to Kansas City. It's recommended that users confirm their flight details before booking.

Cheap American Airlines flights from St. Louis to Kansas City

To aid your search, here are some of the cheapest American Airlines flights we've found from St. Louis to Kansas City. Deals are refreshing constantly so come back soon for more options.

Cheap St. Louis to Kansas City flights in September & October 2023

The best prices found for STL to MCI flights for September, October
Check out some of the best flight deals from St. Louis to Kansas City in 2023. Check back regularly for other flight deals.

St. Louis to Kansas City 2023 flight deals

Cheap flights to Kansas City from St. Louis found for this year
Check out some of the best flight deals from St. Louis to Kansas City in 2023. Check back regularly for other flight deals.

St. Louis to Kansas City flights leaving soon

Late deals on return flights to Kansas City from St. Louis, departing today and this week
Check out these flights departing soon from St. Louis to Kansas City. To prevent any unwanted surprises, users should verify their flight info before booking.

One-way flights to Kansas City from St. Louis

The cheapest one-way flights from St. Louis to Kansas City
Take a look at some of the one-way flights we've detected from St. Louis to Kansas City. For those needing a return trip from St. Louis, there is a search form available above.

Find flights from St. Louis to Kansas City within your budget

Use the slider to find flights from St. Louis to Kansas City that fit your budget.

Fly from

Any airport

Fly to

Any airport

Budget

$177 - $532

Route

Depart

Return

Price

Lambert-St LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Wed 11/1

1 stop5h 06m

Kansas City

Wed 11/1

1 stop6h 34m

Lambert-St LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Fri 10/27

1 stop10h 10m

Kansas City

Sun 10/29

1 stop7h 24m

Lambert-St LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Fri 10/27

1 stop10h 10m

Kansas City

Sun 10/29

1 stop7h 24m

Lambert-St LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Sat 12/9

1 stop5h 31m

Kansas City

Sun 12/10

1 stop5h 02m

Lambert-St LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Fri 10/27

3 stops20h 10m

Kansas City

Sun 10/29

1 stop7h 24m

Lambert-St LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Fri 10/27

1 stop5h 18m

Kansas City

Fri 11/3

1 stop3h 57m

Lambert-St LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Sun 10/8

1 stop12h 48m

Kansas City

Mon 10/9

1 stop23h 37m

Lambert-St LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Sat 12/9

2 stops16h 30m

Kansas City

Sun 12/10

1 stop17h 59m

Lambert-St LouisKansas City

STL - MCI

STLMCI

Lambert-St Louis

Sun 10/8

1 stop6h 54m

Kansas City

Tue 10/10

2 stops23h 07m

Flights are sorted by cheapest first

Deals found on 9/27

Reviews of airlines servicing Kansas City

Get a feel of what it's like to fly with United Airlines, American Airlines and Frontier from St. Louis to Kansas City by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
1,890 reviews

Boarding

7.7

Overall

7.4

Entertainment

7.0

Food

6.7

Comfort

7.3

Crew

8.1

Reviews

1 / 10

Overall good however I used to be status with United but for certain circumstances I’m using different carriers currently. Now my notes are as follows. 1. transparency I received a note via text that the flight will be delayed one hour, due to weather, however the pilot in the overhead dismiss the fact, and he gave a different excuses for fueling and some error to be corrected it may well be that they need better communications between the command center and the pilot. 2. I used to have my luggage with United damaged in many occasions however, different carrier. Take better care of the luggage when I changed to them my last trip. I had a broken suitcase again which I did not have with other carriers for the duration with them. United personnel need to take a better care with luggage

United Airlines
7.4
Good
1,890 reviews
United Airlines
7.4
Good
1,890 reviews

Boarding

7.7

Overall

7.4

Entertainment

7.0

Food

6.7

Comfort

7.3

Crew

8.1

Reviews

1 / 10

Overall good however I used to be status with United but for certain circumstances I’m using different carriers currently. Now my notes are as follows. 1. transparency I received a note via text that the flight will be delayed one hour, due to weather, however the pilot in the overhead dismiss the fact, and he gave a different excuses for fueling and some error to be corrected it may well be that they need better communications between the command center and the pilot. 2. I used to have my luggage with United damaged in many occasions however, different carrier. Take better care of the luggage when I changed to them my last trip. I had a broken suitcase again which I did not have with other carriers for the duration with them. United personnel need to take a better care with luggage

American Airlines
7.2
Good
2,635 reviews
United Airlines
7.4
Good
1,890 reviews

Boarding

7.7

Overall

7.4

Entertainment

7.0

Food

6.7

Comfort

7.3

Crew

8.1

Reviews

1 / 10

Overall good however I used to be status with United but for certain circumstances I’m using different carriers currently. Now my notes are as follows. 1. transparency I received a note via text that the flight will be delayed one hour, due to weather, however the pilot in the overhead dismiss the fact, and he gave a different excuses for fueling and some error to be corrected it may well be that they need better communications between the command center and the pilot. 2. I used to have my luggage with United damaged in many occasions however, different carrier. Take better care of the luggage when I changed to them my last trip. I had a broken suitcase again which I did not have with other carriers for the duration with them. United personnel need to take a better care with luggage

Spirit Airlines
6.3
Okay
1,484 reviews
United Airlines
7.4
Good
1,890 reviews

Boarding

7.7

Overall

7.4

Entertainment

7.0

Food

6.7

Comfort

7.3

Crew

8.1

Reviews

1 / 10

Overall good however I used to be status with United but for certain circumstances I’m using different carriers currently. Now my notes are as follows. 1. transparency I received a note via text that the flight will be delayed one hour, due to weather, however the pilot in the overhead dismiss the fact, and he gave a different excuses for fueling and some error to be corrected it may well be that they need better communications between the command center and the pilot. 2. I used to have my luggage with United damaged in many occasions however, different carrier. Take better care of the luggage when I changed to them my last trip. I had a broken suitcase again which I did not have with other carriers for the duration with them. United personnel need to take a better care with luggage

Frontier
5.8
Fair
762 reviews
United Airlines
7.4
Good
1,890 reviews

Boarding

7.7

Overall

7.4

Entertainment

7.0

Food

6.7

Comfort

7.3

Crew

8.1

Reviews

1 / 10

Overall good however I used to be status with United but for certain circumstances I’m using different carriers currently. Now my notes are as follows. 1. transparency I received a note via text that the flight will be delayed one hour, due to weather, however the pilot in the overhead dismiss the fact, and he gave a different excuses for fueling and some error to be corrected it may well be that they need better communications between the command center and the pilot. 2. I used to have my luggage with United damaged in many occasions however, different carrier. Take better care of the luggage when I changed to them my last trip. I had a broken suitcase again which I did not have with other carriers for the duration with them. United personnel need to take a better care with luggage

Related info for your journey

Useful info, stats and facts about St. Louis to Kansas City flights.

What airports do I use to fly from St. Louis to Kansas City?

To fly from St. Louis to Kansas City, you need to book a flight from Lambert-St Louis (STL) to Kansas City (MCI). Nonstop flights to Kansas City from Lambert-St Louis take 4h 38m on average. When it comes time to book airfare, you have a few options: there are 2 outbound flights from Lambert-St Louis to Kansas City offered by 1 airline.

Can I find flights from St. Louis to Kansas City for under $200 on Cheapflights?

Yes, there are multiple flights from St. Louis to Kansas City for under $200. The cheapest flight booked recently is on American Airlines for just $177, but on average you can expect to pay $349.

Are there last-minute flights available from St. Louis to Kansas City for under $300?

There are currently 20+ open flights from St. Louis to Kansas City within the next 7 days for less than $300.

What days are nonstop flights available from St. Louis to Kansas City?

Nonstop flights can be found on the following days: Friday, Saturday.

How many flights depart from St. Louis to Kansas City on average per day?

5 flight departures from St. Louis to Kansas City per day on average.
Morning (6am - Noon) - 40% of flight departures
Afternoon (Noon - 6pm) - 40% of flight departures
Evening (6pm - Midnight) - 20% of flight departures

How long is the flight from St. Louis to Kansas City?

There are many flights that can get you from St. Louis to Kansas City in 5h 06m. Fly via American Airlines, Frontier, or United Airlines to get the fastest option. There are 238 mi between St. Louis and Kansas City. This flight may include one or multiple stops.

What are the cheapest airlines flying from St. Louis to Kansas City round-trip?

American Airlines, at $177, was found to be the cheapest airline from St. Louis to Kansas City.Alternate airlines to your destination round-trip include Frontier and United Airlines. American Airlines is 18% cheaper than the average price of flights available within the next 90 days to this destination.

What are the cheapest airlines to fly from St. Louis to Kansas City one-way?

One-way options have recently been found by users for as low as $45 on Frontier. Other airlines that offer cheap prices include Spirit Airlines from $122 and American Airlines from $129 one-way.

What does STL to MCI mean?

Great question - STL to MCI just means Lambert-St Louis Airport to Kansas City Airport. Now you’ll know what these unique codes when you look for flights!

Other flights from St. Louis

Top airline flying from St. Louis to Kansas City

The chart below displays the airlines Cheapflights users traveling from St. Louis to Kansas City choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$169Average$310FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Hourly flight availability from St. Louis to Kansas City

See what time of day planes typically take off from St. Louis to Kansas City
1%of flight departuresEarly morningMidnight to 6 am
48%of flight departuresMorning6 am to noon
23%of flight departuresAfternoonNoon to 6 pm
28%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from St. Louis to Kansas City

See how many times per day planes take to the skies headed from St. Louis to Kansas City
Sunday2daily flights
Monday3daily flights
Tuesday3daily flights
Wednesday3daily flights
Thursday3daily flights
Friday3daily flights
Saturday1daily flight

Fly with Cheapflights

What makes Cheapflights the go-to destination for all your flight needs

How does Cheapflights help users find flights from St. Louis to Kansas City?

Cheapflights helps you search for flights from St. Louis to Kansas City via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from St. Louis to Kansas City?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from St. Louis to Kansas City for you. Better yet — we are completely free to use.

Can Cheapflights find flights from St. Louis to Kansas City with no change fees?

Yes! Cheapflights helps users easily find flights from St. Louis to Kansas City with no change fees.

Can Cheapflights notify me if prices for flights from St. Louis to Kansas City become cheaper?

Yes, and it’s super simple to set up. Perform a flight search above and use a valid email address to enable the Price Alert feature. That’s it!

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.