Gross Domestic Product: Air Transportation (NAICS 481) in Maryland was 1856.20000 Mil. of $ in January of 2022, according to the United States Federal Reserve. Historically, Gross Domestic Product: Air Transportation (NAICS 481) in Maryland reached a record high of 1856.20000 in January of 2022 and a record low of 519.80000 in January of 2003. Trading Economics provides the current actual value, an historical data chart and related indicators for Gross Domestic Product: Air Transportation (NAICS 481) in Maryland - last updated from the United States Federal Reserve on March of 2024.