Ending today, Southwest Airlines via DealBase discounts Southwest Airlines 1-Way Fares Nationwide with prices starting at $39.98. (On the DealBase landing page, click on "Southwest Airlines" in the top line to see this sale.) That's tied with our mention from last week and the lowest price we could find for select routes on comparable airlines by $77. This price is valid for flights departing on May 16 from Las Vegas, NV, (LAS) with arrival in Long Beach, CA, (LGB). This sale includes 200 routes, including Baltimore, MD, (BWI); San Francisco, CA, (SFO); Orlando, FL, (MCO); and more. Note that blackout dates and other conditions may apply. Book this travel deal today for travel from May 2 through November 2.

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