Flight alerts help travelers track fluctuating prices, so you know when your ideal flight drops in cost. Photograph by Victoria Zeffert, Alamy Booking affordable airfare can be a turbulent process.

Add Yahoo as a preferred source to see more of our stories on Google. The price of your flight depends on a range of factors outside the day you book it and the day you fly out. However, data from ...

Booking affordable airfare can be a turbulent process. Prices rise and fall day by day, or in some cases, hour by hour. In the past, frequent fliers swore by loose strategies to find deals—book on a ...