Austria’s first airmail service began on 31 March 1918, during the final months of the Austro-Hungarian Empire, making it one of the world’s earliest regular airmail operations. Established by the Kaiserliche und Königliche (k.u.k.) Luftfahrtruppen (Imperial and Royal Air Corps), the service was created to improve postal delivery disrupted by World War I.
The inaugural route connected Vienna (Wien) with Kraków (then part of Galicia, Austria-Hungary; now Poland) and onward to Lemberg (now Lviv, Ukraine). The route was expanded shortly after to include other cities such as Kiev, Pardubitz (Pardubice), and Laibach (Ljubljana). Military biplanes—including Lloyd and Hansa-Brandenburg models—were adapted to carry mail. Both official and civilian correspondence was flown, using envelopes and cancellations marked “Flugpost” (“air mail”).
Austria’s 1918 service was among the first organized international postal air routes, following early efforts in Germany and Italy. It demonstrated the practical value of aviation for communication and inspired later civilian air networks. The service ended later that year with the collapse of the Austro-Hungarian Empire in November 1918.
Austria