What is the airport code for Portland, Maine?

The airport code for Portland, Maine is PWM, which stands for Portland International Jetport. This code follows the International Civil Aviation Organization (ICAO) and International Air Transport Association (IATA) standards for airport identification. PWM specifically identifies the airport located in Portland, enabling airlines, travelers, and logistics services to efficiently process and manage air travel to and from this location.

The other options refer to different airports; for instance, SAN is the airport code for San Diego International Airport in California, RIC stands for Richmond International Airport in Virginia, and RDU refers to Raleigh-Durham International Airport in North Carolina. Each of these codes is unique to its respective airport, which helps in reducing confusion and ensuring accuracy in flight operations.