DELAG, Deutsche Luftschiffahrts - Aktiengesellschaft was the world 's first airline. It was founded on November 16, 1909, with government assistance, and operated airships manufactured by The Zeppelin Corporation. Its headquarters were in Frankfurt. The first fixed wing scheduled air service was started on January 1, 1914, from St. Petersburg, Florida, to Tampa, Florida. The four oldest non-dirigible airlines that still exist are Netherlands ' KLM (1919), Colombia 's Avianca (1919), Australia 's Qantas (1921), and the Czech Republic 's Czech Airlines (1923).
when did the first commercial flight take place
January 1, 1914