Southwest, Alaska and JetBlue will refund you the difference (as a credit for future flights) if the fare for your flight drops after you buy your ticket. Other airlines consider it an itinerary change and apply a fee of $50 to $250.
Travel is full of pitfalls. One wrong step and your vacation could be ruined by a seedy hotel room, an overpriced restaurant, a wasted afternoon at a tourist-trap attraction or an overnight flight crammed in the middle seat. So, guarantee a smooth trip by planning thoroughly. Here's how to make all the right moves.