Travel website Sleeping in Airports posted its lists of 2014 Top 10 World's Best and Worst Airports earlier this month.
The lists were compiled from the surveys done by more than 18,000 passengers between September 2013 and August 2014, who voted for their best and worst airports based on a criteria of four Cs: Comfort, Conveniences, Cleanliness and Customer service.
The Straits Times looks at the Top 5 on each list.
Top 5 Best Airports
1. Changi International Airport, Singapore
This is the 18th year in a row that Singapore's Changi International Airport has been voted the best airport in the world by the website.
Travellers lauded the airport's friendly staff, as well as the range of activities for transit travellers.
Besides a host of shops, the airport also has spas, a roof-top swimming pool, gym, lounges, playgrounds for children, themed gardens and even a free Singapore city tour.
The airport's amenities were praised too, with rest and relaxation zones, and over 800 mobile charging points for travellers to recharge their gadgets.
This top spot follows another accolade received by the airport in March, when it was named the World's Best Airport for 5th time at the 2014 Skytrax World Airport Awards - the most prestigious awards in the airport industry.
At that awards ceremony, the airport was also named the Best Airport for Leisure Amenities.
During that awards acceptance speech, Mr Lee Seow Hiang, Chief Executive Officer of Changi Airport Group, said: "We are honoured to be named Skytrax World Best Airport for the second consecutive year. We appreciate the support given to us by travellers from around the world.
"This recognition is great motivation for us and spurs us to continue to aim higher. At Changi Airport, we remain steadfast in anticipating the needs of our customers, which is the cornerstone of the Changi Experience."
2. Seoul Incheon International Airport, South Korea
This South Korean airport has been praised for its high levels of customer service, hygiene and generous number of armrest-free seats near travellers' boarding gates.
Like the Changi International Airport, it also has gardens and a spa. Two features highlighted by travellers are the airport's indoor ice rink and Korean Cultural Street, where traditional cultural performances are regularly held, and where travellers can grab a quick Korean bite.
The airport came in second place for the 2014 Skytrax World Airport Awards, just behind Changi International Airport. Last November, travel magazine Global Traveler named the airport the world's best airport for the eighth year running.
"Winning the accolade is largely thanks to cooperation among the government, businesses in the airport, and workers under the same goal of providing the best service", said the airport's former President Jung Chang Soo last year.
"Around 40,000 workers in the airport will continue to wow those who use the airport".