When one accrues frequent flyer points, they do so by using the plan provided by the same airline which they are flying; this is not mandated…it simply is the way it tends to happen more often than not.  When you join a points program, you’ll receive those points for the amount of mileage you have journeyed.  For instance, you might get a point or so for each mile you’ve flown.  There is the possibility you may be able to score more points by simple transactions with your airline miles card – plus you can get points for renting vehicles at certain companies, or dining at participating restaurants, or perhaps even staying at certain hotels. frequent flyer points