What is your home city/country? How long is the trip to post from there, with what connections? How easy/difficult is it to travel to this city/country?
Washington, DC. Three hours from DC to Miami, with a long layover in Miami. Then another three hours to Cartagena. - Feb 2020
Atlanta, GA. Delta offers a direct four hour flight. Spirit and Jet Blue offer flights with layovers in Miami & Ft. Lauderdale respectively. Of course, it takes a lot longer if Atlanta isn't your final destination for a trip back to the US. - Aug 2019
Seattle, Washington. It is about a 13-hour trip, either through Houston/Panama City or with a long layover in Miami. - Mar 2012