While I can understand needing to make money whereever possible, for all airlines, the fares on the PHL-PVD route were insane. I actually needed to fly that route 2 times that I ended up driving. Both times the r/t fare was over $598. That equates to a yeild of $2.00 a mile for US. That was for a coach seat. That has to be one of the highest yeilds, if not the highest, in the US system. I drove it both times as I could not justify the expense. If the opportunity presents itself again, I will fly it on whoever has the lowest fare available, which will be under $198 roundtrip, and that I can justify.