travel behaviour through analysing the three concepts in the literature of marketing and behaviour. Through this analysis different marketing concepts will be investigated like: socio-economic demographic variables, passenger segmentation based on the degree of loyalty, psychographic characteristics, nationality and purpose of trips and finally the effect of different psychographic characteristics on passenger evaluation to quality and their degree of loyalty. This research is of special significance to Royal Jordanian Airline (RJ). It addresses an issue that has never been addressed by the RJ before. It is anticipated that the results of this study will be especially beneficial to RJ as they are now preparing for privatisation and developing of new marketing and managerial strategies as part of this process.