American Airlines and Expedia have round trip airfares travelling to and from Austin (AUS) and Denver (DEN) for $ 90, nonstop. These are basic economy fares, a restricted-type fare. On American, you are allowed a personal item and a carry-on bag. There is no seat selection and no changes.

Next best price is on United for $ 120, round trip nonstop with no carry-on bag.

Travel Availabiilty:[INDENT]Departs DEN: Jan 5, 8, 10-12, 14-15, 17-22, 24-26, 28; Feb 1-2, 4-5, 7-9, 12, 14-16, 19, 21-23, 28