Yellowstone Airport or WYS, is different from Yellowstone Regional Airport which is situated 104 miles away from it.WYS is a public airport which is owned by the US state of Montana and is positioned one nautical mile north of West Yellowstone which is a town in Gallatin County. The airport is open only from June through September, but offers commercial service during those months as well.
Yellowstone Airport is spread over 735 acres of land and features one runway. Delta Connection offers commercial air service to Salt Lake City, Utah. The recent National Plan of Integrated Airport Systems, has categorized this airport as the non primary airport under commercial service.

Official Website:
Wikipedia link:
Airnav link:
Contact Number: +1 800-221-1212
Airport Address: 607 Airport Rd, West Yellowstone, Mt 59758, United States