Scandinavian Airlines (SK), or SAS, is the largest airline in Scandinavia and the flag carrier of Sweden, Norway and Denmark. The airline flies to about 100 destinations in Scandinavia, elsewhere in Europe, the Middle East, Asia and North America. The airline's fleet features several configurations. Within Europe, planes are configured with Economy Class, or SAS Go, and Premium Economy Class, or SAS Plus. Long-haul flights include SAS Business, or Business Class, SAS Go and SAS Plus. SAS is a member of the Star Alliance, and also has codeshare agreements with about 25 other airlines.