What city does the code PDX correspond to?

The city code PDX corresponds to Portland, Oregon. Airport codes typically follow the International Civil Aviation Organization (ICAO) and the International Air Transport Association (IATA) standards, where PDX is the designated IATA code for Portland International Airport. The ‘PD’ in PDX reflects the initial letters of "Portland," while the 'X' is a common suffix used for many airport codes to create a unique identifier. Understanding these codes is essential for travelers and anyone working in the airline industry, as they facilitate easy recognition of airports across different regions.