Norwegian Air Shuttle (flight numbers starting with DI, DH, D8, DY) is one of the largest low-cost carriers in Europe. From its base in Norway, the carrier flies non-stop to about 125 destinations in 35 counties Europe, Africa and the Middle East. Additionally, the airline's wholly-owned subsidiaries, Norwegian Long Haul and Norwegian Air International, operate flights to Asia and North America. The airline's short-haul fleet consists of aircraft with a single Economy Class cabin, while the long-haul planes offer both Premium Economy Class and Economy Class cabins. Norwegian has nearly 20 operating bases, the largest of which is located at Oslo Airport (OSL) in Gardermoen.