Originally Posted by DrAlex

First of all, welcome to FlyerTalk and congrats on heading toward Gold.
Cheapest is likely PHL-LAX same day turn 12/3 or 12/10 for $178. Not the best schedule as you'd have 12 hours in LA and then take a red-eye back, but you did say cheap... If time is important, then you can do a same day turn JFK-LAX for $230 most days in the first half of December.