There is good news about ridership at the Yakima Airport -- it has risen to 77 percent for the past three months.

Airport Manager Rob Peterson says it's good news because Alaska Airlines wants to see at least 75 percent ridership for up to a year before adding additional flights.

Peterson says he is concerned, however, the number will drop during the spring and summer months.

People in Yakima typically drive over the pass during the summer because of the lack of snow.

Peterson says a marketing campaign is underway to convince people to fly out of Yakima for summer vacations.

According to Peterson, other airports in the region generally increase ridership in the summer months because of tourism. But the lack of flights in Yakima push a lot of people to jump in the car and drive over the pass.