A study is needed to be made concerning the airline marketing strategy capable of becoming a suggestive point for the home airline industry to smoothly cope with the environmental change of the international air transportation market in which competition is further deepening with the sharp increase of air demand and to construct the foundation for its growth. Accordingly, this study is intended to inquire into the preferences for airlines of the domestic air passengers using the international air route, and to this end the concrete purposes of study were set and carried out as follows : First, to investigate the present realities in terms of the recent results of operations for the airlines entering service at home and services. Second, to examine the previous studies of passengers` preferences for airlines. Third, to conduct the empirical analysis of the subdivision of the airline passenger market, the choice factor of airlines and air passengers` satisfaction with air services. The findings of analysis confirmed that the factor of airline customers` choice of airlines exerted a significant effect on their satisfaction with air travel and the factor varies in accordance with each market segment in choosing the airline to fly.