Flight was from West Beach to Philadelphia to Milwaukee and return flight was the same routing. My only complaint is that we flew a jet to Phil and then a regional jet to Milwaukee although the distances are similar; return flight was the same way. Only thing I can surmise is that there is less demand for Phil to Milwaukee and therfore, a much smaller plane. Normaly, we try to avoid flying through Phl as it is terrible for delays. However this time, we had no delays. The airline did put our luggage on an earlier flight out of PHL so that led to some confusion whgen we arrrived in Milwaukee.