Skymark Airlines is a Japanese airline headquartered at Haneda Airport in Ōta, Tokyo, Japan. It operates scheduled services with a main base at Haneda Airport with another base at Kobe Airport where it is the dominant carrier. It also operates a base at Naha Airport. It is the only Japanese airline offering regular scheduled services at Ibaraki Airport north of Tokyo. Skymark was the first low-cost airline established in Japan. Internet entrepreneur Shinichi Nishikubo controlled the company from 2003 to 2015, when the carrier filed for bankruptcy protection after attempting a fleet and service expansion. In August 2015, Skymark creditors agreed to restructure the airline under the control of Japanese private equity fund Integral Corporation, with minority investments from All Nippon Airways, Sumitomo Mitsui Banking Corporation and the Development Bank of Japan. Wikipedia