Cheap Flights from Kansas City to Saint Louis

Cheapest flights from Kansas City to Saint Louis

Flaut.Travel was designed and developed by a team dedicated to making the process of searching, comparing and booking airline tickets as easy and convenient as possible. Our service helps travelers to find and buy the cheapest flights from Kansas City to Saint Louis. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.

Cheapest one way flight

$96

Frontier Airlines

1 layover

5h 38m

07/01/2026

The cheapest one-way flight from Kansas City to Saint Louis departs on 07/01/2026, is operated by Frontier Airlines and costs $96

Cheapest round trip flight

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There is no information about the cheapest roundtrip flight from Kansas City to Saint Louis

The fastest flight

5h 38m

Fastest flight from Kansas City to Saint Louis takes 5h 38m

Direct flights

Several times a week

There are direct flights on this route 2 days a week: Su and We

Earliest flight

8:25 AM

Latest flight

6:05 PM

Direct flights count

6

Distance

382km

Timezone difference

0h

The distance between Kansas City and Saint Louis is 382km (237 miles). There are 6 direct flights from Kansas City to Saint Louis. Kansas City and Saint Louis are in the same time zone. Flights from Kansas City begin at 8:25 AM. The latest flight from Kansas City departs at 6:05 PM

Remember that on average the ideal time to book flights is 2 months before departure!

Airfare from Kansas City to Saint Louis by month

The cost of a one-way flight from Kansas City to Saint Louis ranges from $96 (July 2026) to $326 (June 2026). On average, the ticket price is about $211–$326.

July 2026

Lowest price

on average:

$96

June 2026

Highest price

on average:

$326

Avg Price

Airlines operating on route

Flights from Kansas City to Saint Louis are operated by several airlines — Southwest Airlines, Frontier Airlines, and United Airlines. This allows passengers to flexibly choose flights based on departure time, cost, and additional services. The minimum ticket price starts at $96, making this destination accessible to travelers with different budgets. We help compare all available options in real time, so you can book tickets at the best value for money. The service ensures transparent search and lets you book affordable flights in just a few clicks.

Southwest Airlines

starting at $367

Frontier Airlines

starting at $96

United Airlines

starting at $326

Non-stop flights from Kansas City to Saint Louis

A non-stop flight is the most convenient and comfortable way to fly from Kansas City to Saint Louis, despite the fact that sometimes flights with transfers can cost significantly less.

Kansas City — Saint Louis

MKC — STL

06/07/2026

Departure

Direct flight

WN3009

starting at $367

Kansas City — Saint Louis

MKC — STL

07/01/2026

Departure

Direct flight

WN2585

starting at $378

Schedule of direct flights from Kansas City to Saint Louis

There are most likely no direct flights on the Kansas City — Saint Louis route

Kansas City airports overview

Kansas City International Airport

•

MCI

30km

Charles B. Wheeler Downtown Airport

•

MKC

9km

Serving downtown Kansas City, Missouri, primarily for general aviation, flight training and business travel, with convenient access to the central business district and nearby riverfront.

•

Saint Louis airports overview

Lambert-St. Louis International Airport

•

STL

20km

Serving St. Louis, Missouri, and the surrounding metro area, it handles domestic and limited international flights with major carriers, a compact terminal, and convenient access to downtown.

Spirit of St. Louis Airport

•

SUS

20km

Serving the St. Louis metro in western St. Louis County, Missouri, primarily a reliever and general aviation field with FBO services, hangars and private-charter operations.

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Frequently asked questions (FAQ)

Answers to questions about the route that travelers are most interested in.

What is the cheapest price for flights from Kansas City to Saint Louis?

The cheapest flight ticket from Kansas City to Saint Louis according to data for the last 48 hours costs $96

When is the best time to buy air tickets on the route Kansas City — Saint Louis?

Often the best time to buy tickets from Kansas City to Saint Louis is 2 months before departure.

When is the cheapest time of year to fly from Kansas City to Saint Louis?

Based on statistics over the past years, the lowest prices for flights from Kansas City to Saint Louis can be found flying in these months: July, June.

How long does it take to fly from Kansas City to Saint Louis?

The fastest flights from Kansas City to Saint Louis start from 5 hours 38 minutes in the air.

Which airline can fly direct from Kansas City to Saint Louis?

The following airlines operate direct flights on the route Kansas City — Saint Louis: Southwest Airlines

Special offers and sales on air tickets from Kansas City to Saint Louis

We keep tight track on airlines' pre-holidays sales and other special offers occurences all the time to let you save maximum amount of funds while traveling to your family or just going out on vacation.

We couldn't find any special offers for flights from Kansas City to Saint Louis

Alternative routes

Waterloo ➜ Saint Louis•Burlington ➜ Saint Louis•Cedar Rapids ➜ Saint Louis•Des Moines ➜ Saint Louis•Wichita ➜ Saint Louis•Lincoln ➜ Saint Louis•Manhattan ➜ Saint Louis•Omaha ➜ Saint Louis•Sioux City ➜ Saint Louis•Tulsa ➜ Saint Louis•Kansas City ➜ Nashville•Kansas City ➜ Burlington•Kansas City ➜ Chicago•Kansas City ➜ Cedar Rapids•Kansas City ➜ Champaign•Kansas City ➜ Evansville•Kansas City ➜ Indianapolis•Kansas City ➜ Memphis

•••••••••••••••••••

Cheapest one way flight

$96

Frontier Airlines

1 layover

5h 38m

07/01/2026

The cheapest one-way flight from Kansas City to Saint Louis departs on 07/01/2026, is operated by Frontier Airlines and costs $96

Cheapest round trip flight

—

There is no information about the cheapest roundtrip flight from Kansas City to Saint Louis

The fastest flight