United Airlines via ShermansTravel offers United Airlines 1-Way Flights to select cities in the Southwestern U.S., with prices starting from $38.20. (On the ShermansTravel landing page, click on "United.com" in the main paragraph to see this sale. We found this price on October 10.) That's the lowest price we could find for select routes by at least $8. Book this travel deal by September 30.

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