GRB is a unique code, commonly called an IATA code, used in the aviation industry to identify airports. This code, along with many others, are defined by IATA (International Air Transport Association). A GRB flight refers to a flight to Green Bay Austin-Straubel Airport.
Green Bay Austin-Straubel (GRB), located 9.5 km from the city centre, is the airport you fly into when you book flights to Green Bay.
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