If you do not want to be limited to one airline and its partners (if it has any), it is better to consider a general travel rewards credit card. For example, it may be the Discover it® Miles credit card. It allows you to earn 1.5 miles for every dollar you spend. What is more, the miles you earn your first year, will be matched at the end of the year (provided you are a new cardmember). For example, if you earn 30,000 Miles, you get 60,000 Miles. The redemption process is simple as well. Earned miles can be redeemed as travel statement credits or as cash deposited to your account. When redeeming for travel statement credits, you can cover the cost of any airline ticket with miles, including Latam airlines. The Discover it® Miles has no annual fee and no foreign transaction fees.