The Airport Council International (ACI) Thursday announced the list of the top airports in the world.

According to the annual ACI Airport Service Quality (ASQ) passenger survey, the top 5 airports in the world are Seoul Incheon International Airport, Singapore Changi Airport, Hong Kong International Airport, Beijing Capital International Airport and Hyderabad Rajiv Ghandi International Airport. All these airports belong to the Asia-Pacific Region.

The survey aims at measuring the improvement made by airports every year and also gives a platform for airports worldwide to compete with their peers. The survey is considered as a reliable performance indicators of the airport's service.

ACI director general Angela Gittens commented, 2009 was a tough year for airports worldwide. Traffic numbers fell while competition rose. For airports, it was a year of balancing tight budgets with high customer expectations for service excellence. The results of the year-long ASQ passenger survey help identify the leaders in meeting that challenge and demonstrate that airports have continued to invest and focus on customer service despite falling traffic numbers.

In addition to the worldwide category, top performers are named for each of the six regional categories and 5 traffic size categories.

By region, top marks go to George, South Africa (Africa); Seoul Incheon, South Korea (Asia-Pacific); Keflavik, Iceland (Europe); Cancun, Mexico (Latin America-Caribbean); Tel Aviv, Israel (Middle East) and Austin, USA (North America).

By the traffic size categories, first place recognition was won by Halifax, Canada (under 5 million), Hyderabad, India (5-15 million), Baltimore/Washington, USA (15-25 million), Seoul Incheon, South Korea (25-40 million) and Hong Kong, China (over 40 million).

Start the slideshow to have a look at the Top 5 airports worldwide.