Fare of the Day: Philadelphia, PA (PHL) to Phoenix, AZ (PHX). $156 RT, including all taxes.

Travel valid Mon-Thurs & Sat. through January 26, 2011. Saturday night stay required, 10 day advance purchase restriction. Seating is scarce on certain dates and blacked-out during peak holiday travel.

Great fare on Delta trying to drum up some extra business between two US Airways major hub cities. Book it while it lasts.