I frequently travel to south america, more specifically to Lima, Peru at least 4-8 times a year. Because of that, i am always searching for cheap flights out of IAH , that's where i am based, and I noticed that prices for several airlines have dropped in the past 2 days. I am talking about $100+ difference in price in the same flight from one day to the other. Is this a tendency and we should expect lower fares for the next few week? I am going to hold on for now to book my ticket for my february trip in hopes to get a cheaper fare.