What city corresponds to the airport code SDF?

The airport code SDF corresponds to Louisville, Kentucky. This designation comes from "Standiford Field," which is the name of the airport serving Louisville, and is a crucial hub for Southwest Airlines and other carriers. Understanding airport codes often involves recognizing how they relate to the city's name or the geographical feature they represent. In this case, SDF is well-known among travelers who frequently fly to or from Louisville, making it an important code within the airline industry.