The Katajanokka Airport (Finnish: Katajanokan lentosatama) was the first airport in Finland, located in the Katajanokka neighbourhood in Helsinki. It functioned as a seaplane base in the south-eastern shore of Katajanokka during the years 1924–1936. Its history ended when the Helsinki-Malmi Airport was inaugurated on 16 December 1936. Aero Oy began its flights from Katajanokka on 20 March 1924 at 15:40 with a Junkers F 13 D-335 aircraft. The crew consisted of a German pilot and a mechanic. The first Finnish pilot, Gunnar Lihr, began his flights during the summer of the same year. The routes of Aero went to Stockholm, Tallinn and Riga.