United has round-trip flights from Austin (AUS) to Aspen (ASE) for $237 with a connection. Flights in November. Very few weekends available.
Main Cabin. Not Basic. Carry-on bag and seat selection allowed. Change fees waived.
Priceline has “Express Deals” for $190. With “Express Deals” the airline and exact flight are hidden until after purchase and those purchases are final. There is no 24-hour free cancellation for “Express Deals”. The flight is guaranteed to be on a major airline. Be sure to select the deal with 0 to 1 stops and a layover less than 3-hours.
Click for more details and booking links Cheap Flights: Austin to Aspen $237 r/t [November] – United