CA $225 Cheap Flights from Kansas City (MCI) to St. Louis (STL)

View CA $225 flight on Thu, Sep. 11, 2025Opens in a new window

Popular airlines from Kansas City International Airport (MCI) to Lambert-St. Louis International Airport (STL)

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

Prices were available within the past 7 days and start at CA $225 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Find the cheapest month to fly from Kansas City (MCI) to St. Louis (STL)

June is typically the cheapest month to fly

From CA $134 - CA $691 per traveller.

Graph displaying average flight prices per month

Flight from Kansas City to St. Louis (MCI - STL) route information
Origin airport
Kansas City Intl.
Destination airport
Lambert-St. Louis Intl.
Distance
378 km
Average flight time
1 hour 5 mins

Kansas City to St. Louis Flights

The easy way to book your flights from Kansas City to St. Louis 

With Expedia, it’s simple to find and book flights to St. Louis from Kansas City whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Lambert-St. Louis Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Kansas City to St. Louis today, tomorrow, or this week.  

 

Save dollars with cheap flights from Kansas City Intl., MCI to Lambert-St. Louis Intl., STL 

Sort your search results by price to find great deals on your flight from Kansas City to St. Louis—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to St. Louis from Kansas City currently is just rising to .  

Here are more money-saving tips: 

  • Fly in when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to St. Louis  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to St. Louis from Kansas City 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to St. Louis with Expedia today.

Frequently asked questions

How much is a flight from Kansas City Intl. Airport to STL?
Round-trip journeys from Kansas City Intl. Airport (MCI) to Lambert Field start from . This price is based on fares quoted within the last 7 days on Expedia for flights departing within the next year — book now to avoid missing out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Kansas City Intl. Airport (MCI) to Lambert-St. Louis Intl. Airport (STL)?
Each air carrier has its own set of terms and conditions. If you decide to cancel your getaway, visit our Customer Service Portal.
How do I find cheap flights from MCI to STL that have flexible change policies?
Flights from Kansas City Intl. Airport (MCI) to Lambert Field with flexible change policies are available from several airlines. Simply use our "No change fees" filter when searching. You'll only need to pay the fare difference, with no extra fees to worry about.
How many hours is the flight from Kansas City Intl. Airport (MCI) to Lambert Field?
The flight time from Kansas City Intl. Airport (MCI) to Lambert-St. Louis Intl. Airport (STL) is only around 5 hours and 11 minutes, so don't get too settled. There's a good chance the next time you peek out the window you'll be cruising over St. Louis.
How far is the flight from Kansas City Intl. Airport (MCI) to Lambert-St. Louis Intl. Airport (STL)?
A flight distance of just 380 kilometres separates Kansas City and St. Louis. Once you're up in the skies, you won't get a chance to do much more than listen to a few songs on your travel playlist.
Which airlines fly direct from MCI to Lambert Field?
Check out the fares with Southwest Airlines (WN) if you want to travel directly from Kansas City Intl. Airport (MCI) to STL. This top airline operates 73 monthly flights, so you're sure to find one that fits your travel schedule.
Are Kansas City Intl. Airport to Lambert-St. Louis Intl. Airport (STL) flight tickets cheaper when they're purchased at the last minute?
Last-minute bookings from Kansas City Intl. Airport (MCI) to STL can be hit-or-miss. You may be able to find a bargain, but then again, you could miss out altogether! If you'd prefer to play it safe and start planning early on, Expedia compares flight deals up to 12 months in advance. Just keep in mind that not all airlines issue their prices that far in advance. Our advice? Check back often as prices are updated frequently.

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