Hamilton has an aviation heritage dating back to 1919. That was the year in which a Hamilton aeronautical watch accompanied the very first American airmail postal service between Washington and New York. This in-flight activity continued to strengthen and grow and by the 1930s Hamilton was the official watch of the commercial airlines, TWA, Eastern, United and Northwest. A major highlight of the era was the selection of Hamilton as timekeeper for the United Air Lines inauguration of the first coast-to-coast service - a 15-hour, 20-minute trip between New York and San Francisco.

Today the Hamilton range includes various aviation-inspired watches. The brand is also timekeeper to a variety of international aviation events and has Nicolas Ivanoff, the leading French aerobatic pilot as its ambassador.