American Airlines via ShermansTravel offers American Airlines 1-Way Fares to select Western U.S. Cities, with prices starting at $39.20. (On the ShermansTravel landing page, click on "here" in the top paragraph to see this sale; we found this price departing Dallas, TX, (DFW), with arrival in Chicago, IL, (ORD) on October 18.) That's the lowest price we could find for select routes today by at least $11. Book this travel deal by September 30.

Prices, dates, and booking details were valid at the time of publication.