Okay, while we wait for jlemon's next questions, I'll do part II of my earlier question:
After the Frontier 737 left ABQ, it made two more stops before returning to DEN, then continued onward to one city beyond DEN.
Name the two stops enroute from ABQ to DEN, and the stop after DEN before the flight ended. Hint: the final stop of the flight was 548 miles from Minot, where the flight began.