Which plane is more comfortable, Air China or Xiamen Airlines?

Generally speaking, Air China's planes may be more comfortable. However, the specific experience may vary depending on the specific flight and model.

Headquartered in Beijing, Air China is one of the three major airlines in China with high service level and punctuality rate. As a local airline, Xiamen Airlines is headquartered in Fuzhou, and its service and reputation are also very good.

To sum up, Air China's aircraft may be more comfortable, but the specific experience needs to consider specific flights, models and other factors.