Delta Airport Code Practice Test 2026 - Free Airport Code Practice Questions and Study Guide

The airport code for St. Louis, Missouri, is STL. This code is derived from the city's name, where the letters 'S', 'T', and 'L' represent the first letters of "St. Louis." STL specifically refers to St. Louis Lambert International Airport, which serves as the primary airport for the St. Louis area. Understanding how airport codes are formed can be useful for travelers and those studying aviation, as they often reflect the name of the city or the location of the airport itself.

The other choices are associated with different locations: SYR is the code for Syracuse, New York; TUL corresponds to Tulsa, Oklahoma; and TPA is the code for Tampa, Florida. Recognizing these codes can help clarify their geographical connections, emphasizing the importance of knowing the correct airport codes for effective travel planning.