what location for bus transportation to xianyang airport?

You can take metro line 2 and get off at Nanshaomen from Exit B, then walk south along North Chang’an Rd for about 5 minutes to Xian Hotel, from where you can take the shuttle bus. As I know, the shuttle buses are available from 04:30 to 20:00 with interval of 30 minutes. The bus costs CNY25 per person. Generally speaking, you are advised to arrive at the airport at least 2 hours in advance.