Unless you HAVE to be there on a certain day, you'll find it much cheaper to go in early December or mid January than over the peak holiday travel times. (If school is in session, tickets are going to be much cheaper).
If you MUST travel during the late December period, look for flights on December 25 - usually a very light travel day, and possibly on Jan 1 (particularly morning flights).
Because you are going out of a small market, it's proabably always going to be more expensive for you.
And if you fly, remember to wear thick socks and slip on shoes (and use 3 bins for the xray, putting your valuables in the middle one, shoes in the last, and other stuff in the first.)