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

Popular airlines from Charles B. Wheeler Downtown Airport (MKC) to St. Louis Lambert Intl. Airport (STL)

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

September is typically the cheapest month to fly

From $77 - $602 per traveler.

Alternative airports near St. Louis

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Lambert-St. Louis Intl. STL. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $412
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $412

Frequently asked questions

How much does a flight from Charles B. Wheeler Downtown Airport (MKC) to Lambert-St. Louis Intl. Airport (STL) cost?
Grab a cheap one-way flight or cheap return flight from Charles B. Wheeler Downtown Airport (MKC) to Lambert-St. Louis Intl. Airport (STL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Charles B. Wheeler Downtown Airport (MKC) to Lambert-St. Louis Intl. Airport (STL)?
is the least expensive month to fly from MKC to STL. Avoiding peak travel times is often the key to finding better fares.
Which airlines fly direct from Charles B. Wheeler Downtown Airport (MKC) to Lambert-St. Louis Intl. Airport (STL)?
Although Kansas City, MO (MKC-Charles B. Wheeler Downtown) has no direct flights to Lambert-St. Louis Intl. Airport (STL), other airports have nonstop options. Jetting off from Kansas City Intl. Airport (MCI) will get you to St. Louis without any layovers.
What is the cheapest airline that flies from Charles B. Wheeler Downtown Airport (MKC) to Lambert-St. Louis Intl. Airport (STL)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest MKC to STL flight.
How many flights per day from Charles B. Wheeler Downtown Airport (MKC) to Lambert-St. Louis Intl. Airport (STL)?
You'll have to take a flight with a layover if you're traveling from Charles B. Wheeler Downtown Airport (MKC) to Lambert-St. Louis Intl. Airport (STL). Direct flights don't operate daily on this route. However, just filter your search to include one or two stops to discover an option that works for you.
What day of the week has the most flights from MKC to STL?
Usually you'll find the largest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* But this can change depending on the time of year, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What airline has the least delays from MKC to STL?
Consider traveling with Sun Country Airlines if you'd like to go straight from Charles B. Wheeler Downtown Airport (MKC) to Lambert-St. Louis Intl. Airport (STL) without any interruptions. This carrier has the best track record for punctuality, with an on-time performance of 100%. Want real-time updates? You can keep an eye on your flight status using the Expedia App.
What is the best time to fly from Charles B. Wheeler Downtown Airport (MKC) to Lambert-St. Louis Intl. Airport (STL)?
Choose a flight from Charles B. Wheeler Downtown Airport (MKC) to Lambert-St. Louis Intl. Airport (STL) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Departures after this time have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Charles B. Wheeler Downtown Airport (MKC) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Last-minute fares from MKC to STL are usually more expensive. To secure the lowest rates, start looking for flights early. That said, if your travel plans are flexible, it's possible to find a cheap fare right before your journey.
Is it cheaper to book a MKC to STL flight and hotel package?
Compared with arranging flights and hotels separately, booking a MKC to STL flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one place will take the hassle out of travel planning. Simply pick your flights and choose from our extensive range of hotels, then tailor your trip with extras like car rentals and activities.
Can I cancel or change the date of my flight from Charles B. Wheeler Downtown Airport (MKC) to Lambert-St. Louis Intl. Airport (STL)?
If you booked your MKC to STL flight in the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the type of fare you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more information.

Travel information

Origin airport
Charles B. Wheeler Downtown
Destination airport
Lambert-St. Louis Intl.
Distance
228 mi

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Kansas City to St. Louis Flights

The cheapest times to fly from Kansas City to St. Louis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Kansas City to St. Louis are during the month of . You can find some of the cheapest flights from Kansas City to St. Louis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Kansas City to St. Louis

Sunday is one of the best days to book for cheap flights from Kansas City to St. Louis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Kansas City to St. Louis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Kansas City to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Kansas City to St. Louis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Kansas City to St. Louis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Kansas City to St. Louis Flights

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*Available to One Key members.