What is the airport code used for St. Louis, MO?

The airport code used for St. Louis, MO is STL. This code is derived from the name of the city, with the letters representing the first letter of "St." and "Louis," followed by an additional letter to complete the three-letter format used for airport designations. STL is recognized by travelers and aviation authorities as the identifier for St. Louis Lambert International Airport, which serves as the main airport for the region, facilitating both domestic and international flights.

In contrast, TPA is the code for Tampa International Airport in Florida, BKG is not a commonly recognized airport code in the U.S. and may refer to an airport in a different region, and TTN corresponds to Trenton-Mercer Airport in New Jersey. Each airport has its unique code that ensures clarity and accuracy in travel planning and navigation, highlighting the importance of knowing the correct identifiers when referring to specific airports.