Cathay Pacific Group has 120 aircraft sitting on the tarmac at any given time according to the South China Morning Post due to route cuts which is a response to the coronavirus outbreak and protests in Hong Kong.
Cathay Pacific also made this announcement:
We understand that travelling during this period can be stressful. As the situation develops, we will communicate any changes to your booking as clearly and quickly as possible.
Our global contact centres are extremely busy at the moment, so please accept our apologies if waiting times are longer than usual. For self-service options, please visit Manage Booking, where you can view your latest flight arrangement and rebook if necessary.
Effective immediately, Cathay Dragon has cancelled flights to and from Hangzhou, Ningbo, Wenzhou, Sanya and Haikou in Mainland China to March 28, 2020. For flights to and from Guangzhou and Chongqing will be cancelled to March 28, 2020. We will be assisting the affected passengers regarding alternative arrangements.