It’s generally more expensive to depart on a Monday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.
To save up to 96% on this flight, we recommend booking at least 31 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Kansas City to St Louis from $374 1-2 weeks out and tickets from $553 for flights departing within the next 72 hours.
Due to multiple factors, expect to potentially pay more when booking in December. For low rates, August can be a great choice for travel to St Louis. Flights to St Louis from Kansas City in August are about $266 on average during August, but can be found for as low as $158.
One of the essential ways to save on airfare from Kansas City to St Louis is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 54% on airfare.
|Early morning Midnight to 6 AM||34% of MCI to STL departures|
|Morning 6 AM to noon||33% of MCI to STL departures|
|Afternoon Noon to 6 PM||33% of MCI to STL departures|
|Evening 6 PM to midnight||0% of MCI to STL departures|