Airlines have a policy of rewarding the travelers who opt to travel with them more often. Call it the loyalty programs, rewards programs or the frequent flyer programs, the offerings of various options for buying cheap flights to the loyal customers do make a big difference to the travel expenses. The more you fly, the more are the flight mileage points you accumulate. At the same time, there are a number of discount offers which keep coming now and then and you might not be willing to use the redemption of the mileage points along with these discounted offers.
Well, not using the redemption at all times and using this selectively might be a good consideration but it shall be well considered that the rewards points have their own expiry period. If these are not used within this period of time, the points are lost and the major savings which could have been made could be a lost opportunity. For this reason, it is important to remember the expiry date. At the same time, it is also important to have a tentative idea about how many flights are you likely to fly till the expiry date so that you can know how to exhaust all the points by redemption.
It is a good practice to think of the expiry date before doing the flight booking and make a decision on whether to use the redemption option or not, in the light of future travel plans.