We've been flying down twice a year since 93 and I find the best deals on Delta out of Logan. I usually fly for about $150-$180. Once or twice I have had to pay about $210-220, but if you keep checking, you can usually get a good rate. We usually flight out in the morning and plan the return trip for the afternoon. Usually when we return from a trip I start planning for the next and checking airfare. I have used Expedia for Fare Tracker as well as checking myself. I find if you check Delta's site on Tuesdays and Wednesdays, especially Wednesdays, you sometime can hit a great rate, but you need to book right then, because then it jumps back up over the next few days. I have gone on the site on a Monday and seen a fare for $209 and then on Wed. of the same week, it will be $158. So if you do a quick check a couple times during the week you can usually get a decent fare.