Hotel, OTA and rental car apps scored an average of 849 on J.D. Power's 1,000-point scale. Airline apps scored an average of 840. Those figures compare to average customer satisfaction scores of 874 and 867 for credit card and retail banking apps, respectively.

Among the eight hotel apps ranked in the study, Hyatt led the way, followed by InterContinental Hotels Group. The Starwood app had the lowest score.

Orbitz led the way among the five OTA apps ranked in the study. Priceline was second. CheapOair was last.