Which city is served by the airport code GDL?

The airport code GDL is associated with Guadalajara, Mexico. This three-letter code is used globally to identify airports and is governed by the International Civil Aviation Organization (ICAO) and the International Air Transport Association (IATA). Guadalajara is a major city in Mexico, known for its rich cultural heritage, and its airport is an essential hub for both domestic and international flights. Each airport code is unique and helps in the identification of specific locations efficiently, which is crucial for travelers and airlines alike. The other options listed correspond to different cities and airports, each with its own distinct code, which reinforces the importance of recognizing and correctly associating airport codes with their respective cities.