if you have booked the flight tickets on China airlines and now have been thing, "how do I upgrade my class on China airlines?" or what is the China airline flight schedule and china airlines upgrade policy, then this blog shall be very helpful. Also, if you have a shortage of time and wish to have a direct conversation with the help desk the for that the China airlines customer service numbers are as follows: +1800 227 5118 For more information Visit our blog https://cheapairlinesdeals.com/blog/upgrade-class-on-China-Airlines