What are the four major domestic airlines?

1. China international airlines co., ltd (hereinafter referred to as "air China") was formally established in Beijing on 1988. It is the only civil airline flying the national flag in China.

2. China Southern Airlines (hereinafter referred to as China Southern Airlines), headquartered in Guangzhou, was established on March 25th, 1995. Blue vertical tail with red kapok as the company logo is the airline with the largest number of transport planes, the most developed route network and the largest annual passenger traffic in China.

3. China Eastern Airlines Co., Ltd. is a state-owned holding airline headquartered in Shanghai, China. On the basis of the former China Eastern Airlines Group, China Northwest Airlines was merged with China Yunnan Airlines.

4. Hainan Airlines Holdings Co., Ltd. was established on February 29th, 1995, and its registered place is HNA Building, No.7 Guoxing Avenue, Haikou City, Hainan Province, China. 202 1 Hainan Airlines and its holding subsidiaries operate nearly 1800 domestic and international routes.