Deruluft was a joint Soviet-German airline, established on 24 November 1921. Deruluft opened its first service to Moscow

Moscow

Moscow is the capital, the most populous city, and the most populous federal subject of Russia. The city is a major political, economic, cultural, scientific, religious, financial, educational, and transportation centre of Russia and the continent...

 from Königsberg

Königsberg

Königsberg was the capital of East Prussia from the Late Middle Ages until 1945 as well as the northernmost and easternmost German city with 286,666 inhabitants . Due to the multicultural society in and around the city, there are several local names for it...

 (later Kaliningrad

Kaliningrad

Kaliningrad is a seaport and the administrative center of Kaliningrad Oblast, the Russian exclave between Poland and Lithuania on the Baltic Sea...

) on 1 May 1922. It started a new route from Berlin

Berlin

Berlin is the capital city of Germany and is one of the 16 states of Germany. With a population of 3.45 million people, Berlin is Germany's largest city. It is the second most populous city proper and the seventh most populous urban area in the European Union...

 via Tallinn

Tallinn

Tallinn is the capital and largest city of Estonia. It occupies an area of with a population of 414,940. It is situated on the northern coast of the country, on the banks of the Gulf of Finland, south of Helsinki, east of Stockholm and west of Saint Petersburg. Tallinn's Old Town is in the list...

 to Leningrad

Leningrad

Leningrad is the former name of Saint Petersburg, Russia.Leningrad may also refer to:- Places :* Leningrad Oblast, a federal subject of Russia, around Saint Petersburg* Leningrad, Tajikistan, capital of Muminobod district in Khatlon Province...

 on 6 June 1928, and maintained both routes until 31 March 1936.

Most of the aircraft used were German, and so was its organization, at least until the 1930s. Its first aircraft were Dutch-built Fokker

Fokker

Fokker was a Dutch aircraft manufacturer named after its founder, Anthony Fokker. The company operated under several different names, starting out in 1912 in Schwerin, Germany, moving to the Netherlands in 1919....

 F.III

Fokker F.III

-Bibliography:* de Leeuw, Rene. Fokker Commercial Aircraft: From the F. I of 1918 Up to the Fokker 100 of Today .* Weyl, A.R. Fokker: The Creative Years. London: Putnam, 1965. ISBN 0-85177-817-8....

's. Later German Junkers F13's were added to the fleet. At first, Deruluft carried only mail and officials, but on 27 August 1922 the service was opened to the public.
From 1929 onwards the early Fokker F.III

Fokker F.III

-Bibliography:* de Leeuw, Rene. Fokker Commercial Aircraft: From the F. I of 1918 Up to the Fokker 100 of Today .* Weyl, A.R. Fokker: The Creative Years. London: Putnam, 1965. ISBN 0-85177-817-8....

's were replaced by Dornier

Dornier Flugzeugwerke

Dornier Flugzeugwerke was a German aircraft manufacturer founded in Friedrichshafen in 1914 by Claudius Dornier. Over the course of its long lifespan, the company produced many notable designs for both the civil and military markets.-History:...

 Merkur's. Early 1931 the Tupolev

Tupolev

Tupolev is a Russian aerospace and defence company, headquartered in Basmanny District, Central Administrative Okrug, Moscow. Known officially as Public Stock Company Tupolev, it is the successor of the Tupolev OKB or Tupolev Design Bureau headed by the Soviet aerospace engineer A.N. Tupolev...

 ANT-9

Tupolev ANT-9

-See also:-References:* Duffy, Paul and Andrei Kandalov. Tupolev: The Man and His Aircraft. Shrewsbury, UK:Airlife Publishing, 1996. ISBN 1 85310 728 X....

was added.
Deruluft was terminated on 31 March 1937.