"UTair Aviation"(commonly known as UTair) is an airline based in Khanty Mansiysk, Russia. It operates scheduled domestic and some international passenger services, scheduled helicopter services (e.g. from Surgut) plus extensive charter flights with fixed-wing aircraft and helicopters in support of the oil and gas industry across Western Siberia. UTair is also involved with relief operations for the United Nations. Its main base is at Roschino International Airport (TJM).