When to buy that plane ticket?

Michele Higgins writes:  

Recent fare analysis by the Airlines Reporting Corporation seems to challenge the conventional wisdom that the earlier you book, the less expensive your fare will be. In January, the corporation, which processes ticket transactions for airlines and travel agencies, reported that over the past four years passengers paid the lowest price for domestic flights when buying just about six weeks in advance.

There you go. Now the question is how a change in consumer behavior can change prices six weeks in advance.  

Keep reading the New York Times article by Michele Higgins.