People often wonder how I get so many frequent flyer miles when I rarely ever pay for an airline ticket. This is one of my techniques. Using the right credit card can get free miles for simply doing your normal grocery shopping!
Maxing out your $1500 during 3 months is basically $500 a month and most families will easily spend that on groceries. You can also buy gift cards for any other merchants (such as gas stations, restaurants, department stores) you do business with at most grocery stores. You then end up with 7500 free Ultimate Rewards points that can be converted to airline miles if you also hold a Chase Sapphire Preferred or Chase Ink Plus card. The best partners to transfer to are United Airlines and British Airways.
If you don’t already have a Chase Freedom, you can post here asking for a referral as I sometimes have them to give out. My most recent referral just expired on 8 Dec but I still have referrals for the Chase Sapphire Preferred valid until 31 Jan 2015. Or you can read this Flyertalk thread to see if there are any specials going on. The most recent special has been this one, but please read the thread to see if it is still active when you wish to apply.