“…It is still unknown if these programs contribute to the key performance indicators in airline industry. These indicators are firm revenue, profit streams and the number of passengers carried (Gittell et al, 2004;Carlsson & Lofgren, 2006;Lederman, 2007;Wong & Chung, 2008;Demydyuk, 2011;Kristiani et al, 2014;Olazabal et al, 2014). Prior research (Berman, 2006;Bagdoniene & Jakstaite, 2007;Liu & Yang, 2009;Omar et al, 2010;Huettinger & Cubrinskas, 2011;Omar et al, 2011aOmar et al, , 2011b has shown that loyalty program has become an important mechanism to increase firm revenue.…”