The following regulations concerning airport and gasoline tax are enforced in China currently .
Domestic flights within China: RMB50 (eqv. US$6.00) for airport tax
International flights leaving China: RMB90 (eqv. US$12.00) for airport tax
Hong Kong Departure tax: HK $50 Passengers holding diplomatic passports, transit passengers who stop over for less than 24 hours, and children under the age of 12, are exempt from the airport tax.
In addition, passengers will pay another RMB100 as gasoline tax for distance more than 800km or RMB60 for less than 800km.