Find Cheap Flights from Kansas City to St. Louis (MKC - STL)

Flights overview

Useful information for finding cheap flights from Kansas City to St. Louis and booking your next trip

Cheapest round-trip flights	$230	Frontier 1 stop 6 hr Sat, Jul 18 — Sun, Jul 19	The cheapest round-trip flight from Kansas City to St. Louis is currently $230
Cheapest one-way flight	$95	Frontier 1 stop 6 hr Wed, Jun 10	The cheapest one-way flight from Kansas City to St. Louis is currently $95
Cheapest nonstop flights	$337	Southwest Nonstop 2 hr Thu, May 28 — Mon, Jun 1	The cheapest nonstop round-trip flight from Kansas City to St. Louis is currently $337
Last-minute weekend getaway	$680	American 1 stop 24 hr Sat, May 9 — Sun, May 10	The cheapest last-minute weekend getaway from Kansas City to St. Louis is currently $680
Cheapest business class flights	$498	Frontier 1 stop 6 hr Sat, Jul 18 — Mon, Jul 20	The cheapest business class round-trip flight from Kansas City to St. Louis is currently $498

Fastest flight	1 hr 5 min	The fastest nonstop flight from Kansas City to St. Louis takes 1 hr 5 min
Nonstop flights	Every day	There are direct flights on this route every day.

When is the cheapest time to fly?

The cheapest month to fly from Kansas City to St. Louis is typically September. The most expensive month to fly is typically July.

September Cheapest	Typical prices: $110–380
July Most expensive	Typical prices: $280–475

Popular airlines from Kansas City to St. Louis

Southwest

Nonstop

from $337

Typical price: $220–520

20 weekly nonstop flights

MCI - STL Every day

849 weekly connecting flights

MCI - STL Every day
American

from $411

Typical price: $320–540

396 weekly connecting flights

MCI - STL Every day
United

from $339

Typical price: $310–650

378 weekly connecting flights

MCI - STL Every day
Delta

from $1,126

Typical price: $1,050–1,550

270 weekly connecting flights

MCI - STL Every day
Alaska

from $873

Typical price: $530–1,250

21 weekly connecting flights

MCI - STL Every day
Frontier

from $230

Typical price: $170–500

21 weekly connecting flights

MCI - STL Every day

Popular airports near Kansas City

Kansas City International Airport (MCI)

Kansas City United States 25 min 15 mi
Eppley Airfield (OMA)

Omaha United States 2 hr 54 min 167 mi
Des Moines International Airport (DSM)

Des Moines United States 2 hr 47 min 175 mi
Wichita Dwight D. Eisenhower National Airport (ICT)

Wichita United States 2 hr 59 min 184 mi

Popular airports near St. Louis

St. Louis Lambert International Airport (STL)

St. Louis United States 21 min 12 mi
General Wayne A. Downing Peoria International Airport (PIA)

Peoria United States 2 hr 36 min 143 mi
Columbia Regional Airport (COU)

Columbia United States 2 hr 8 min 109 mi
Indianapolis International Airport (IND)

Indianapolis United States 3 hr 30 min 222 mi

Frequently asked questions about flying from Kansas City to St. Louis

The cheapest flights from Kansas City to St. Louis are usually in September. Typical ticket prices in September range from $110 to $380.

The cheapest round-trip flight from Kansas City to St. Louis recently found on Google Flights was with Frontier from $230. The cheapest one-way flight was with Frontier from $95.

Some of the cheapest round-trip deals we found with different airlines:

The cheapest Southwest flight from Kansas City to St. Louis is $337, flying from May 28 to Jun 1.
The cheapest American flight from Kansas City to St. Louis is $411, flying from May 28 to May 31.
The cheapest United flight from Kansas City to St. Louis is $339, flying from May 28 to Jun 1.
The cheapest Delta flight from Kansas City to St. Louis is $1,126, flying from Jul 3 to Jul 5.
The cheapest Alaska flight from Kansas City to St. Louis is $873, flying from Jun 6 to Jun 8.
The cheapest Frontier flight from Kansas City to St. Louis is $230, flying from Jul 18 to Jul 19.

The cheapest round-trip flight from Kansas City to St. Louis starts at $230 from Sat, Jul 18 to Sun, Jul 19. The cheapest one-way flight starts at $95 and departs on Wed, Jun 10.

1 hr 5 min is the shortest flight time from Kansas City to St. Louis.

Apr–Sep is the most popular time to visit, coinciding with hot, humid summer and events like Fair St. Louis, a huge Fourth of July festival at Forest Park, and the Taste of St. Louis food festival (Sep). Weather in winter is cold, with occasional snow.

It's easy to use Google Flights to find the cheapest days to fly from Kansas City to St. Louis.
Just click the Departure label near the top of the page to open the calendar. Choose a start date and a return date to see how the round-trip fare changes on those specific days.
Adjust the trip type to see one-way fares. The cheapest available flights are highlighted and easy to spot. Once you settle on dates, click the Search button to see flight options and book the deal.

You can also turn on price tracking to get alerts if the price changes for a route or flight.

What counts as the best airline for your flights from Kansas City to St. Louis really depends on your individual needs. You may have a favorite carrier or a loyalty program you like, but price, convenience, and airports served also come into play. Flexibility and booking terms – Can you change flights if you want to stay longer or get a refund if you have to postpone your trip? – are also factors that help determine which airline is best to fly from Kansas City to St. Louis.

In terms of nonstop flights, Southwest is the most popular. Southwest offers 20 nonstop flights and 849 connecting flights per week. Southwest flies from Kansas City International Airport (MCI) to St. Louis Lambert International Airport (STL) .

Other popular airlines flying from Kansas City to St. Louis are:

American offers 396 connecting flights per week. American flies from Kansas City International Airport (MCI) to St. Louis Lambert International Airport (STL) .
United offers 378 connecting flights per week. United flies from Kansas City International Airport (MCI) to St. Louis Lambert International Airport (STL) .
Delta offers 270 connecting flights per week. Delta flies from Kansas City International Airport (MCI) to St. Louis Lambert International Airport (STL) .
Alaska offers 21 connecting flights per week. Alaska flies from Kansas City International Airport (MCI) to St. Louis Lambert International Airport (STL) .
Frontier offers 21 connecting flights per week. Frontier flies from Kansas City International Airport (MCI) to St. Louis Lambert International Airport (STL) .

The number of connecting flights refers to distinct flights with at least one stop between Kansas City and St. Louis.

The cheapest round-trip flight from Kansas City to St. Louis recently found on Google Flights was with Frontier from $230. The cheapest one-way flight was with Frontier from $95.

Some of the cheapest round-trip deals we found with different airlines:

The cheapest Southwest flight from Kansas City to St. Louis is $337, flying from May 28 to Jun 1.
The cheapest American flight from Kansas City to St. Louis is $411, flying from May 28 to May 31.
The cheapest United flight from Kansas City to St. Louis is $339, flying from May 28 to Jun 1.
The cheapest Delta flight from Kansas City to St. Louis is $1,126, flying from Jul 3 to Jul 5.
The cheapest Alaska flight from Kansas City to St. Louis is $873, flying from Jun 6 to Jun 8.
The cheapest Frontier flight from Kansas City to St. Louis is $230, flying from Jul 18 to Jul 19.

Southwest flies direct from Kansas City to St. Louis.

There are 20 Southwest direct flights from Kansas City to St. Louis per week. Flights are available every day.

Use the Stops filter while searching for flights, to see only nonstop options in your results.

The cheapest last-minute deal between Kansas City and St. Louis at price $680 is offered by American from Sat, May 9 to Sun, May 10.

Southwest flies direct from Kansas City to St. Louis.

There are 20 Southwest direct flights from Kansas City to St. Louis per week. Flights are available every day.

Use the Stops filter while searching for flights, to see only nonstop options in your results.

There are direct flights from Kansas City to St. Louis on a daily basis.

The cheapest direct (nonstop) round-trip flights between Kansas City and St. Louis start at $337 from Thu, May 28 to Mon, Jun 1 with Southwest.

It's easy to find nonstop flights with Google Flights! Once you've searched for flights from Kansas City to St. Louis, just select the nonstop flights only option in the 'Stops’ filter in the search form and view all available direct flights and their prices.

The cheapest business class round-trip flights between Kansas City and St. Louis start at $498 from Sat, Jul 18 to Mon, Jul 20 with Frontier.

The cheapest economy class round-trip flights between Kansas City and St. Louis start at $230 from Sat, Jul 18 to Sun, Jul 19.

To book business class trips from Kansas City to St. Louis, look for the default Economy selection at the top, and change it to your desired cabin class such as Premium Economy, Business Class, or First Class. You can then select your departure and arrival dates, consider available options, and book your business travel.

You can also adjust the trip type to view one-way fares.

The best last-minute getaway deal for the next weekend between Kansas City and St. Louis starts at $680 from Sat, May 9 to Sun, May 10 with American.

The cheapest last-minute deal between Kansas City and St. Louis at price $680 is offered by American from Sat, May 9 to Sun, May 10.

To find last-minute flight deals from Kansas City to St. Louis, start by entering the city names, select the desired departure and return dates, and hit the Search button to view flight options.

You can check for last-minute flights for the same day or adjust the trip type to see one-way fares.