Getting there & away
There are no ferries to the Colombian mainland or elsewhere. Cargo boats to Cartagena and Providencia might take passengers, but are only of interest to those who can stomach a long and rough sea journey.
The airport is in San Andrés Town, a 10-minute walk northwest of the center, or US$3 by taxi. Colombian airlines that service San Andrés include Avianca/SAM (512 3211; cnr Avs Colombia & Duarte Blum) and AeroRepública (512 7334; Av Colón 3-64); there are direct connections to Bogotá (US$140), Cali (US$140), Cartagena (US$128) and Medellín (US$140). At the time of research there were no direct flights between San Andrés and Central America, but Avianca does offer a flight three times a week to Panama City via Bogotá (one way US$207).
The airport tax on international departures from San Andrés is the same as elsewhere in Colombia: US$30 if you have stayed in the country fewer than 60 days and US$50 if you've stayed longer. You can pay in pesos or US dollars.
Satena Airways (512 6867; firstname.lastname@example.org; Aeropuerto Internacional Sesquicentenario) operates two or three flights per day between San Andrés and Providencia (return US$124), serviced by a 19-seater plane. Note that West Caribbean Airways had formerly flown this route but had suspended operations at the time of research.