According to a study from SAP Concur and GBTA, the shift was caused in part by more options now being available to the corporate platforms, as platforms such as Airbnb have been integrated.

The report found that booking flights and accommodation direct from suppliers had falling over the past year, from 81% in 2017 to 69%.

The number of European business travelers who booked flights directly with an airline fell from 79% in 2017 to 68% in 2018. During the same period, the number booking hotel accommodation directly dropped from 83% in 2017 to 70%.