Air miles credit cards may seem mysterious but they are your best bet if free flights make you tick. Find out which card will emerge the winner in this three-way battle between DBS Altitude vs Citi PremierMiles vs OCBC 90N.

What’s sweeter than a dreamy vacation to somewhere you’ve always wanted to visit? Free flights. While you may need to fork out some taxes and airport charges, the cost of your travel tickets may essentially shrivel up thanks to the miles you’ve earned and accumulated on your air miles credit card.