Soekarno Hatta is World's Second Most On-time Airport, Forbes

As airlines continue to charge customers more while offering fewer services, at least the world's busiest airports are showing signs of improved performance. That's according to data published by FlightStats, an Oregon-based company that tracks historical and real-time flight information for airports and airlines around the world.

For the second year in a row, Japan's Haneda Airport (HND) tops the list of the world's most on-time airports. (An "on-time" flight is defined by the industry as being less than 15 minutes late.)

This year's most improved airport on the top ten, Soekarno-Hatta, jumped from last year's sixth slot thanks to impressive 84.2% on-time arrivals and 89.2% on-time departures. An estimated 32 million passengers passed through this busy hub in 2008, but airport officials want more. Construction on a third terminal is underway. Once completed, CGK will be able to double its passenger traffic.