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Hainan Airlines ranked number nine in 2021, dropping two spots from 2019. The China-based carrier won Best Airline in China, Best Airline Staff in China, and Best Business Class in China this year, and secured a COVID-19 Airline Excellence award. Hainan was established in 1993 and grew from a small domestic airline to a large global carrier serving nearly 100 destinations worldwide. China Southern Airlines jumped two spots from 14 in 2019 to 12 in 2021 in this year's rankings. China Southern was established in 1988 after a merger of several domestic airlines and is now one of China's "Big Three" carriers alongside Air China and China Eastern Airlines. Due to the pandemic, the carrier became the world's largest airline by seat capacity in October 2020, edging out American Airlines that previously held the title. China Southern serves 200 destinations in China and abroad.