2.3. Air transport services and tourism development Tourism bears a particularly close relationship to the airline industry. Even in a well-developed tourist market like Manila or Bangkok, the addition of a single international fight can have a discernible impact on receipts and employment in the tourism sector, with positive spillover effects throughout the broader economy (Raguraman, 1995). Looked at from another perspective, changes in the accessibility of a place within international airline networks can either enhance or detract from its ability to attract tourists. International airline hubs enjoy a special advantage in competing for tourist traffic because the concentration of transiting traffic represents a tourist market to be tapped.