Getting the cheapest flights

By N.B. | WASHINGTON, DC LAST AUGUST, Gulliver told you about the "eight-week rule" for buying airline tickets. According to Makoto Watanabe, the cheapest time to book your flight, all else being equal, is about eight weeks before you plan to leave. It's a good one-step rule. But what else should you take into account when trying to get a great deal on an expensive flight? The Wall Street Journal'