Singapore Airlines is one of the best full service airlines in the world. The problem of the study was the effect of service quality of the airlines to the passengers’ loyalty of Singapore-Jakarta route in 2017. This study was aimed at finding out the above statement. To analyze the problem, the researchers were using analysis of simple linear regression. The data was taken from 154 passengers’ statement of SQ 958 Singapore-Jakarta route. The result shows the low effect of X and Y variables. Based on t-table result that Ha is accepted while Ho is not accepted, there is a significant and positive low effect of X (service quality) and Y (passengers’ loyalty) variables.
                        
                        
                        
                        
                            
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