Southwest's latest sale is valid for travel through June 3 & between August 25 - October 28, 2015. Travel is valid on Tuesdays, Wednesdays, and Saturdays for most routes.

Travel to Florida or Nevada is valid Sundays through Wednesdays, while travel from Florida or Nevada is valid Tuesdays through Fridays. Travel to/from San Juan, Puerto Rico is valid Mondays through Thursdays through May 20 and between September 9 - October 29, 2015.

This sale ends at 11:59 p.m. origin city time on April 9, 2015.

Sample fares include:

Columbus to Washington D.C. $138 round-trip, nonstop

Grand Rapids to Denver $298 round-trip, nonstop

Washington D.C. to Denver $298 round-trip, nonstop

Buffalo to Baltimore $184 round-trip, nonstop

Dallas to Columbus $204 round-trip, nonstop

Dallas to Austin $132 round-trip, nonstop

Oakland to Santa Ana $146 round-trip, nonstop

Portland to San Jose $150 round-trip, nonstop

Newark to Nashville $230 round-trip, nonstop

Milwaukee to Baltimore $224 round-trip, nonstop

Tampa to San Juan, Puerto Rico $252 round-trip, nonstop

Above image via iStockphoto.