亞太地區航空界的市場日趨競爭，而航空公司競相擴張，一味追求市佔率之經營策略是否具經濟效益令人質疑。本研究以成本花費、客運供給量、貨運供給量等三項指標作為資本投入構面之衡量，探討其對公司營業額與收益的影響，並藉由資本投入變動量來檢視航空公司追求經濟規模的效益情形。融合時間序列與橫剖面模式之分析結果顯示，資本投入只對營業額有正向影響，但其變動量並不具任何影響性；而資本投入與其變動量對收益則完全無影響，亞太地區航空公司之經營策略經實證發現並不具經濟規模效益。

The market in Asia Pacific Airline industry is getting more and more competitive. Whether the airline's administrative strategy of keep expanding and pursuing higher market share will promote economics of scale is questionable. To assess whether the economics of scale do or do not exist in the Asia market, this research used three indicators: expenses, passenger supply and cargo supply as the measurements of Airlines' investment inputs to examine their effect on operating revenues and profit. The effects from the growth of investment inputs are also inspected to evaluate the benefits of airlines' expanding strategy. The Time Series Cross-Section Regression-TSCS results show that investment inputs have positive effects on revenues, but their growth does not. Furthermore, the investment inputs and their growth have no effects whatsoever on profits. This empirical evidence established that the airline's administrative strategy of expansion do not generate the economics of scale.