BOZEMAN, Mont. -

Officials at the Bozeman Yellowstone International Airport tell us there are fewer people flying in this weekend.

NBC Montana caught up with airport director Brian Sprenger who says as of this afternoon there were 900 passengers booked to fly into the airport through Sunday.

Sprenger told us the Memorial Day holiday weekend is typically slow. He says airport workers expect numbers to jump up higher as the month of June approaches.

Sprenger says despite the lower number of passengers coming through, airlines tend to fill up their flights.

"Flights are still pretty full because what the airlines do is they increase the number of flights and size of the airplanes as they go into the summer season. Right now, on the smaller airplanes and fewer number of flights, they still fill them up," said Sprenger.

Many passengers we spoke to off-camera told us they flew in to visit Yellowstone National Park for the weekend.