Poor Med Student Needs Help getting cheapest deal.

I am a poor Medical student who needs to fly to Conshohocken, PA for a licensing board exam?

I need to fly from LAX to Conshohocken, PA on June 27th and stay 1 night, then travel the next day to New York to stay with family, and finally fly out of JFK on July 1st back to LAX.

I've tried Jetblue, Southwest, and numerous other travel sites and the cheapest I can get is roughly 600 dollars give or take a 50 or so.

Can anyone give me some insight or help me find better deals.

Thanks!