Ending today, Spirit Airlines via DealBase offers Spirit Airlines 1-Way Summer & Fall Flights Nationwide with prices starting at $40.20. (On the DealBase landing page, click on "Spirit Airlines" in the top line to see this sale.) That's a buck under our mention of these fares from earlier this week and the lowest price we could find for select routes by $6. Book this travel deal by today for travel on select dates from August 22 through December 13.

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