On CNN: How airlines set your air fares

Few topics of conversation are as universal as that of airline fares.

Why some flights go from being very cheap to costing a little fortune in a matter of hours? What motivates sudden fare changes? How airlines decide what air fares are you going to pay? Do fares depend on how much the airline knows about you?

And, perhaps most importantly, how can travellers make the most of technology in order to fly for less?

I touch all this points in my latest CNN article "Seating secrets: how airlines decide the fare you pay"...