Which airport code represents Barcelona, Spain?

The airport code for Barcelona, Spain is BCN. This code is derived from the first three letters of the city's name, which makes it easy to remember and relevant to the location it represents. Barcelona is served primarily by the Barcelona-El Prat Airport, and using the IATA code BCN allows for efficient communication and identification in travel and logistics contexts.

The other codes listed correspond to different airports: PEK refers to Beijing Capital International Airport in China, EZE is the code for Ministro Pistarini International Airport in Buenos Aires, Argentina, and CUN is used for Cancun International Airport in Mexico. Each of these codes is unique to its respective airport, highlighting the importance of accurate identification in the international aviation landscape.