American Airlines via ShermansTravel offers American Airlines 1-Way Fares to select Western U.S. Cities, with prices starting at $41.20. (On the ShermansTravel landing page, click on "here" in the top paragraph to see this sale; we found this price departing Los Angeles, CA, with arrival in Las Vegas, NV, on September 18.) That's tied with our mention from the lowest price we could find for select routes today by at least $5. Book this travel deal by August 31.
Prices, dates, and booking details were valid at the time of publication.