[06/24/2017 @ 10:16 AM] Old post clean-up. Fare gone. Removing from deal list.
United has round-trip flights from Austin (AUS) to Denver (DEN) for $117. Flights April and May. Origin/Destination reversible. Weekends available.
Note: It may be possible to get this for cheaper on Frontier if you can manage to fly with a small back-pack. Otherwise, Frontier will be more expensive, since checked-bags are $30, EACH-WAY.
Click for more details and booking links Nonstop Flights: Austin to Denver $117 r/t – United