Siberian Airlines S7 Airlines, is an airline company founded in year 1992 with headquarters in the town of Ob, Novosibirsk, Russia and bases at the airports Domodedovo, Tolmachevo and Irkutsk. The fastest growing airline company is operating flights to 87 destinations in Europe, Asia and Africa and successfully competes with Aeroflot - the main airline carrier for domestic flights in Russia. Currently, the company operates flights to and from Burgas and Varna airport and to Plovdiv Airport during the winter season. The airline fleet consists of 60 modern airplanes of the type Airbus and Boeing.

According to the baggage requirements of S7 Airlines, the hand baggage allowed on board is two pieces up to 7 kg for the Business Class travellers, and one piece of luggage up to 7 kg for the Economy Class passengers, with dimensions 55 x 40 x 20 cm. The restrictions for the registered luggage are 30 kg for the Business Class passengers and 20 kg for the Economy Class passengers.

Airline S7 is a member of the Oneworld alliance and provides quality service to the passengers, plus a frequent-flyer program.