What airport shuttle bus use to go from Bell Tower to Xian Airport?

Well, there is no direct shuttle bus that operates between Bell Tower and Xianyang Airport. You are advised to walk east along East Street around 1.5 kilometers and get to Grand Metropark Hotel first. Then take the airport shuttle bus East Street Line directly. The service hours of this bus line are from 07:00 to 21:30 with the frequency of 20 to 30 mins. The duration is around 70 mins. Notably, you need to arrive at the airport at least 2 hours in advance.