5月30日国际民航组织(ICAO)公布的对2005年的初步估计显示,该组织189个缔约国的定期航空公司总的经营利润为经营收入的1.0%,比2004年0.9%的经营利润略有改善。以美元计算,2005年的经营收入目前暂时估计为4133亿美元,比2004年增长了约9.1%,而经营成本估计为4090亿美元,约增长了9%。所完成的每吨公里的经营收入从2004年 A preliminary estimate of 2005 released by the International Civil Aviation Organization (ICAO) on 30 May showed that the operating profit of the regular airlines operating 189 States Parties to the Organization was 1.0% of operating revenue, slightly higher than the 0.9% operating profit in 2004 improve. In U.S. dollars, 2005 operating income is tentatively estimated at 413.3 billion U.S. dollars, an increase of 9.1% over 2004, while operating costs are estimated at 409 billion U.S. dollars, an increase of about 9%. The completed operating income per tonne kilometers from 2004