CHEK Lap Kok has clawed its way up the ranking of the world's busiest airports, bucking the regional trend for slowing growth, according to Airports Council International. The latest table, based on passenger traffic for October last year, puts Hong Kong in 21st position, up from 28th place in September. The council said passenger traffic had risen by 4.8 per cent from a year earlier to 2.47 million people. Tokyo remains the busiest airport in the region with 4.73 million passengers in October, while Seoul stays four places ahead of Hong Kong with 2.6 million, despite a 16.3 per cent fall in traffic. Hong Kong's performance goes against the trend, with airports in the region continuing to suffer from falling business, despite a worldwide increase in the number of people flying. The organisation said passenger traffic among its 550 members had risen two per cent in October - the latest figures available - compared with a year earlier, but that Asia-Pacific airports suffered a decline of nearly three per cent over the same period. The figures for cargo were worse still, with the region seeing traffic shrink by 5.4 per cent. The shrinking passenger market compared unfavourably with other regions, with Latin America in particular enjoying buoyant growth of 8.2 per cent in passenger traffic. Africa saw a rise of 4.2 per cent, Europe six per cent and North America two per cent.