How do we go from Manila International Airport? What are the Cheapest Airlines?

Fernado, you need fly from Manila to Beijing first. Which section do you want to visit? Badaling, Mutianyu, Simatai or Jinshanling? As for the cheap airlines, I think you may visit some air ticket booking websites frequently to find out the cheapest one. By the way, the air ticket is cheaper in the low season, probably from November to March of next year.