The Southeast Asian country was closely followed by India, Ecuador and China on the list of destinations that USTOA members consider increasingly popular in the year.
The Association announced the list at an annual conference held recently on Marco Island, Florida. It is an occupational association, through which travel agents organize tours and provide tourism services in countries around the world.
Recently, Smart Travel Asia, a prestigious online travel magazine, also highlighted Vietnamese tourism by listing Hanoi and Hoi An among the top ten most attractive tourist destinations in Asia in 2011.
Smart Travel Asia's list was based on votes cast online by more than one million readers worldwide from May to July 2011.