The very tip I will share was gotten through an experience I had when I tried to look for cheap flights to Dubai. I actually waited until the trip was close in the mistaken belief that I would get the best deals when the departure date drew close. It was a nasty experience. To begin with, I got stuck in a rush for tickets and I guess the airlines rely on the law of demand and supply to sell their tickets. I got Luxury hotels on a plane and in chatting with a fellow passenger, found that I paid almost twice the price she paid. I almost choked on my food! It was a bitter lesson but I learnt well...I always make sure that I book on time.
Research, research, research! This might sound like a cliche but it holds true. If you decide to look for the cheapest airfare, then you just have to look beneath the surface to get the great deals. Even when you have gotten some nice prices, you should still go on to compare cheap flights.