Star Alliance
Star Alliance is an airline alliance headquartered in Frankfurt, Germany. Founded on 14 May 1997, it was the world's first global airline alliance. Star Alliance has 25 member airlines that operate a combined fleet of over 5,000 aircraft, serving more than 1,300 airports in 195 countries on more than 19,000 daily departures. it is the world's largest airline alliance by market share, holding 17.4 percent compared to 13.7 percent for SkyTeam and 11.9 percent for Oneworld.
The alliance has a two-tier rewards program, Silver and Gold, with incentives including priority boarding and upgrades. Like other airline alliances, Star Alliance airlines share airport terminals (known as co-locations), and many member planes are painted in the alliance's livery. Provided by Wikipedia