In conclusion, all of these factors impacted theloyalty of Thai Airways customers. When Thai Airways has some change of their servicequality and complaint handling, the loyalty of its customers will be closely and directlyinfluenced by it. Customer loyalty is also influenced by the change of customer satisfaction ina high relative rate and customer loyalty is also impacted by corporate image, complainthandling and service quality directly at a moderate rate. The strongest relationship wascustomer satisfaction and customer loyalty