According to the list, Saudi Arabia’s Jeddah King Abdulaziz International Airport held onto its position as world’s second worst airport while Port Harcourt International Airport in Nigeria (PHC) holds the first spot.

The survey report said existing terminals in Islamabad are still in need of a good scrub, and crowd control continues to be a problem. “Staff has a ways to go in terms of providing a welcoming experience to guests, and improvements might begin with cracking down on corruption.”

The airport has also been working away on a much anticipated and much needed new terminal, which is set to be open towards the end of 2016.

For Saudi Arabia, Saudi Voters were annoyed by the chaotic, crowded, unclean airport — particularly within the Hajj terminal.

“From smoking in non-smoking areas to the bathroom odor wafting out into the lounges, few people sang praises after spending time here,” said Sleeping in Airports.

Every year, SleepingInAirports conducts a survey asking travellers to rate their airport experiences based on the services and facilities available within the terminal, cleanliness, customer service, comfort and their overall airport experience.

Looking worldwide, there are a lot of airports that didn’t quite make the grade. Those that top our charts for worst airports in the world collected the most negative feedback from voters over the past year.

These airports fall flat in terms of providing any kind of enjoyable overall airport experience. Instead, they’re dirty, uncomfortable, unfriendly and lack the most basic of services and amenities. They elicit passionate critiques from those who visit them, and countless warnings for future travellers to avoid these places at all costs. That said, if you do find yourself at one of the following 10 terminals, bring a serious amount of patience because you’ll most definitely need it!

Here are the Top 10 Worst Airports in the World based on overall airport experience as determined by voters in 2015 Airport Survey: