Air China Limited has greatly expanded its service network by partnering with world famous airlines in many countries and regions around the globe through Star Alliance. Using code share cooperation, Air China has increased its route coverage all around the world. According to Air China's flight information statistics by the SSIM file for summer 2009, Air China has code share relationships with 17 airlines adding 211 routes, 4443 weekly flights to its network, which covers 18 countries, 2 regions and 106 cities. If you find the following flight numbers on your tickets, you will be served by the partner airlines of Air China Limited, which means that the flights are operated by the partner airlines of Air China and you need to check-in at the counters of our partner airlines.