"The Airport” Morristown Airport (MMU) is one of the nation’s premier general aviation (GA) airports. Given the airport’s advantageous location west of New York City in Morris County, New Jersey, MMU is home to flight departments of multiple Fortune 500 Companies, two world-class Fixed Based Operators in Signature Flight Support and Atlantic Aviation, U.S. Customs & Border Protection to accommodate international travel, Air Traffic Control and more. A fixture in the New York Airspace since the early 1940s, MMU has long been recognized by industry organizations as a leader in the general aviation world and actively advocates on behalf of all GA members.