Air China Group: available seat kilometers 2016-2021, by type
In 2021, Air China's carrying capacity in mainland China amounted to around 146 billion available seat kilometers (ASKs), while international flights was at 4.2 billion ASKs. Since the outbreak of COVID-19 in 2020, Air China's capacity outside the mainland had been severely reduced, and the continued reduction in 2021 was linked to China's zero COVID policy.