Geral, you can get a ticket quite easily at the counter at International from Tropic. I do it all the time, and have never had a problem. The price just went up again...$93.00BZ for a one way to San Pedro. I don't know the exchange rate in El Salvador, but would advise you to convert to US before comming here. Nothing is more readily accepted than US here. Even more than the Belizean dollar.