Check the weatherstrip seals around the doors. The seals for the passenger and third door was falling down just a tad so it was leaking air. I just pushed it back up for now, but it took care of the problem for now until I get something to glue it back up.

 

i have a problem with my front drivers side window, at the top mostly. its pretty loud at times on the highway. I got to think what if i got a couple of buddys and slightly bent the top of the door frame inwards to make it a tighter fit up against the seal. seems like it would work, did this in a jeep cherokee i had once.