Domestic travel grew 3.0 percent year-over-year in November, with both business and leisure travel registering gains thanks to historically high levels of consumer confidence.

At the moment, that segment’s year-over-year growth is expected to slow to 2.4 percent through May 2019, with the business segment outpacing leisure travel.

However, U.S. Travel economists caution that the road ahead for domestic business travel could become rocky as well.