We all know know the feeling…you check a fare and think,  “Great, that’s not bad.” You come back later and suddenly it’s higher. Here’s the real story behind airfare changes and how to use it to your advantage. Distance Doesn't Determine Price A lot of travelers assume longer flights cost more.  But it isn't that simple. Airlines base prices on demand patterns, not mileage. Routes with lots of business travelers usually cost more because those passengers: Book closer to depar