- Aspen/Pitkin County Airport, also known as Sardy Field, is a public airport located in Pitkin County, Colorado, United States. It is approximately 3 miles northwest of downtown Aspen. The airport serves as a gateway to the Aspen-Snowmass resort area. It primarily handles general aviation and private jet traffic, although there are also some commercial airline services available. The airport has a single runway and offers a range of amenities and services for travelers.