Which airport code is associated with the city of Fort Wayne?

The airport code associated with the city of Fort Wayne is FWA, which stands for Fort Wayne International Airport. Airport codes are typically three-letter identifiers assigned to each airport and are often derived from the name of the city or the airport itself. In this case, "FWA" is a straightforward abbreviation for Fort Wayne, making it easy to remember and identify.

The other airport codes listed refer to different locations: FRA is the airport code for Frankfurt Airport in Germany, GCM is for Owen Roberts International Airport on Grand Cayman Island, and GRB is for Austin Straubel International Airport in Green Bay, Wisconsin. The distinct nature of these codes further underscores the accuracy of FWA as the correct answer for Fort Wayne, as it represents a specific and recognized airport within the United States.