Guatemala City is represented by which airport code?

Guatemala City is represented by the airport code GUA, which stands for La Aurora International Airport, the primary airport serving the capital. This code is designated by the International Air Transport Association (IATA) and is used in airline ticketing, flight schedules, and baggage handling.

The other codes listed correspond to different locations: GYA is not a recognized code for any airport, GDL is the code for Guadalajara International Airport in Mexico, and IAH is the code for George Bush Intercontinental Airport in Houston, Texas. GUA is the only code that directly identifies the airport located in Guatemala City, making it the correct answer for this question.