Airlines understand that travel plans can change at any moment. Therefore, most of them will allow you to modify a flight you booked with miles or points. Some may even do so without charging you. This is a huge perk if you’re particularly prone to last-minute flight changes. You may be able to make changes to your flights without spending a lot of time or extra money. While each airline has its own set of rules, you’ll find that the flights you book with miles often offer flexibility. It may be overwhelming to keep track of all your miles or points if you open and use more than one air miles credit card. One of the best ways to stay organized and track your rewards is through a simple Excel or Google spreadsheet. Make sure your spreadsheet includes the name of each program, your login info, and the last mileage or points count. Pull up the spreadsheet any time you want to book travel so you know which card to use. You don’t have to update your spreadsheet every day, but it’s a good idea to do so whenever you log in to one of your accounts.