How much does a Oakland airport ticket cost to LA and back?

Since many people suggest taking a plane to LA for a concert I really wanna go[I already bought the ticket lol. At first I wanted to take the bus but... the bus people said that they wont drive us too far to our destination since they will stop at a different hotel from where me and my mom are staying at. Anyway, my mom and I was wondering how much does it cost for a ticket from Oakland to LA and back to Oakland? you know what I mean? x]