When I first went abroad, everyone told me to book as far in advance as possible. I bought my tickets to India almost a year in advance, and out of curiosity checked the prices two weeks before I left. I could have saved $400.
Airline companies main priority is filling the plane. One way to do that is to offer low prices for those that plan ahead, but more companies are filling seats by offering huge last minute sales.
In this article the New York Times analyzed when to get the best rates for a few holiday locations. The article also suggests Bing's Price Predictor, ITA Software, and Yapta to make sure you don't overpay like I did!











