Hi, Im currently looking for flights to BOS or PVD from DEN in mid/late August. so far the flights I have found are a little too exspensive for my budget, since my family is flying, it will add up. I have found the cheapest with AirTran at 270ish. I would like to see them in the lower $200's.

I am pretty new to this, but what approach do you go to in looking for cheaper fares, I am considering booking two seperate segments/PNR's with different carriers even to get a cheaper flights (and maybe more miles =D) but I have no idea how to get started. Any help would be greatly appreciated!