Many people are excited to discover that Aspen has its own airport. The Aspen-Pitkin County Airport is on the outskirts of town right between Buttermilk and Snowmass ski areas. Unfortunately, it can be rather expensive to fly in and out of this small airport so most travelers choose a larger one. The closest larger airport is Grand Junction Regional Airport which is about two hours away. It's still small, though, and can also be expensive. The largest and most affordable airport in the state, Denver International, is about a four-hour drive from Aspen. Both Grand Junction Regional Airport and Denver International Airport have ample rental car facilities if you wish to drive yourself from there, or you can book a ski shuttle to Aspen - there are plenty.