What is the airport code for Oakland, California?

The airport code for Oakland, California, is indeed OAK. This three-letter code is assigned by the International Civil Aviation Organization (ICAO) and is used universally in aviation to identify specific airports. OAK is derived from the name of the city, reflecting its geographical location and helping to facilitate air travel and logistics.

In the context of the other options, BNA represents Nashville International Airport in Nashville, Tennessee, JFK is the airport code for John F. Kennedy International Airport in New York City, and NAS refers to Nassau International Airport in the Bahamas. Each of these codes applies to different airports that serve distinct locations, further highlighting why OAK is the correct designation for Oakland.