Other aircraft operated by Aspen Airways in the 1960s included a Fairchild F-27 turboprop (which didn't work out very well in the high density altitude conditions that can occur at high elevation mountain airfields), and piston and turboprop variants of the de Havilland Heron as well as Piper Navajo and Aero Commander 500B aircraft.

A major competitor on the Aspen-Denver route for many years was Rocky Mountain Airways (RMA) which operated de Havilland Canada DHC-6 Twin Otter turboprops.

During the early 1980's, Aspen Airways expanded by providing scheduled passenger airline within California including service at Lake Tahoe Airport (TVL) located in the Sierra Nevada Mountains.

The front cover of the September 1, 1980, system timetable for Aspen Airways had the message: "Specializing in service to.....Lake Tahoe, California & Aspen/Snowmass, Colorado."

Essential Air Service (EAS) was operated between San Francisco and Modesto (MOD) and Stockton (SCK), California in 1982.

The BAe 146-100 is the smallest member of the British Aerospace 146 family of jetliners, many of which currently remain in operation in Europe as well as other parts of the world although not in the U.S. except in aerial fire fighting roles as converted air tankers.

The airline also operated nonstop service at one point between Salt Lake City (SLC) and Aspen, Jackson Hole, Wyoming (JAC), and West Yellowstone, Montana (WYS).

At the time of the separate sale and merger, Aspen Airways operated four BAe 146 jets and ten Convair 580 turboprops.

Aspen Airways served the following destinations as an independent airline or as a United Express air carrier at various different times during its existence.