Swiss International Air Lines (LX) is Switzerland's flag carrier and a member of the Star Alliance. The airline offers non-stop flights to more than 100 destinations in 48 countries. These include four points within Switzerland, as well as other cities in Europe, Africa, Asia, the Middle East, North America and South America. In addition to its alliance partners, Swiss has codeshare arrangements with more than 20 other airlines. The airline's fleet has a variety of two-cabin (Business Class and Economy Class) and three-cabin (First Class, Business Class and Economy Class) configurations. Depending on the departure city, premium class passengers may have access to the airline's SWISS First Lounge, SWISS Senator Lounge or SWISS Business Lounge. Swiss's primary hub is located at Zürich Airport (ZRH).