I just checked 2 tickets instead of 4, the price was the same. The funny thing is; out of 108 seats, 82 are open (in coach). This made me laugh out loud.
Phoenixinct: thank you for the info (link). I normally don't buy airfare in advance but since our trip isn't long after the July 4th holiday, I was taking into perspective that the flights would just go up closer to travel. Of course, I didn't imagine that they would triple 6 months out.