What is the official airport code for Seattle?

The official airport code for Seattle is SEA. This code is used universally in airline reservations, ticketing, and aviation operations to represent Seattle-Tacoma International Airport, which serves as the main airport for the Seattle metropolitan area. Each airport has a unique identifier assigned by the International Air Transport Association (IATA), and SEA is specifically designated for this airport, ensuring clarity and consistency in air travel communication. The other codes listed refer to different airports; for instance, SFO is for San Francisco International Airport, PHX is for Phoenix Sky Harbor International Airport, and PDX is for Portland International Airport, serving different regions altogether.