The tax is now 200 baht. other International Airports including Chiang Mai Hat Yai and Phuket will stay at 200 baht. domestic departure tax will stay at 30 baht Airport Authority ofThailand governor AirChiel Marshal Chanin Chandarubeksa said the rate had not been changed for at least five years. Landing and take-off fees for aircraft using the country's airports would also be increased on the same day, he said For aircraft weighing 10-50 tons, the fee will be increased from 85 to 100 bahtlton. Those weighing more than 50 tons but not more than 100 tons will be charged baht/ton instead of the 95 baht charged now. Aircraft weighing more than 100 tons will be charged 130 baht/ton, up from 105 baht ACM Chanin said the landing and take-off fees had not been increased for at least eight years The authority has spent nine billion baht in recent years on expanding airports so more passengers can come, he said. It also had to pay value-added tax which, between January 1992 and September 1994, took 247.3 million baht out of landing and take-off fees, and 216.43 million baht slice of departure tax.