Ranked fifth on the list, Hanoi’s Noi Bai International Airport was frequently described by the survey's respondents as being hot, chaotic and not especially clean.

“In spite of its tropical location, air conditioning seems to perpetually be a problem - and the constant crowds exacerbate overheating,” the site concluded, adding that sweaty travelers are further frustrated by the poor signage and limited flight information displayed throughout.

Also, a number of basic facilities are lacking at this airport as well – including foreign exchange bureaus and sufficient numbers of chairs, according to the survey.

But it also said that just before publication, the airport had installed 14 sleep pods in its international terminal and now offers free Wifi.

Meanwhile, Ho Chi Minh City's Tan Son Nhat International Airport (ranked eighth on the list) was generally described as functional and reasonable.

Facilities are generally average, and cleanliness levels fluctuate, according to the survey.

Vietnam's airport authorities are not immediately available for comments.

When submitting votes for "worst" airport, travelers were asked to consider just how limited they thought four C’s of airport travel, including comfort, conveniences, cleanliness and customer service.

Topping the list of worst airport was Islamabad's Benazir Bhutto International Airport in Pakistan, followed by Kathmandu's Tribhuvan International Airport in Nepal and Manila's Ninoy Aquino International Airport in the Philippines.

The Guide to Sleeping in Airports also listed the best airports in Asia, which consistently surpass expectations surrounding the four C’s and are resplendent with movie theaters, koi ponds, elaborate spas, shopping emporiums, cultural experiences, national museums, indoor gardens and pet hotels.

Accordingly, Asia's best airports, respectively, include Singapore Changi, Seoul Incheon, Hong Kong, Kuala Lumpur, Taiwan Taoyuan, Tokyo Haneda, Osaka Kansai, Tokyo Narita, New Delhi Indira Gandhi and Bangkok Suvarnabhumi.

Thanh Nien News - October 20, 2014