"Our guests are increasingly booking online," Sorenson said during a call with investors on Tuesday. "Our direct digital channels leveraged the popularity of Marriott Bonvoy and offered the lowest cost per reservation. Those channels -Marriott.com and Marriott mobile - accounted for 32% of our room nights booked in the third quarter, [which was] over 400 basis points higher year over year."

Over the same period, the company reported, online travel agent (OTA) bookings declined nearly 100 basis points year over year.