THAI executives could not be reached for comment.
The THAI/THAI Smile issue was raised because Thailand made full use of the traffic rights, in terms of flight frequencies and passenger volumes, granted by Laos for flights to that country.
THAI and Bangkok Airways are the only Thai-registered carriers given rights to operate between the two countries. The flag carrier flies twice a day to Vientiane and four times a week to Luang Prabang.
THAI shares closed yesterday on the Stock Exchange of Thailand at 14.80 baht, up 30 satang, in trade worth 93.8 million baht.