The best way to acquire cash in Medellin is to withdraw it from an ATM. However if you must bring dollars, or any other currency, there are plenty of money exchange facilities around town.
There are also three or four small money exchange offices within a few minutes walk of Parque Lleras as shown on the map below. You’ll also find currency exchange offices in all the larger shopping malls such as Santa Fe, Oviedo and El Tesoro.
A well known and recommended option is Unicambios, located at both Oviedo and Sante Fe malls. You can check their website for the up-to-date daily exchange rate. There is another option called Rescambios located in office 311 of Dann Carlton Torre Empresarial which we’ve heard has good rates. We recommend you don’t exchange much money in the airport as it tends to be one of the worst rates available.
A popular site for checking the exchange rate is www.xe.com.