Continuous improvements of bus services ensure passengers’ well-being. Quality services amalgamated with low price are dominating factors to change passengers’ views in this aspect. With contentions to previous ideology, passengers’ choices stick to a particular bus service provider especially Starline Bus Services (Pvt.) Limited, Bangladesh in compare to other transport (bus) services available on the way of Feni to Chittagong. Hypotheses were set based on fact-finding relationships and justified through 411 sample responses both for loyalty and satisfaction in relation to key predictors like quality service, one stop service, waiting time, price, income, and brand belief and found very convincing roles of the same to develop impregnable brand loyalty of Starline. As a result, those predictors possibly opted to create supremacy in travel service in this region and even considerable factors in future for building loyalty toward passenger travelling services.