Entry requirements for US citizens
US citizens do not need a visa for tourism in Colombia for stays of up to 90 days, but must complete the free online Check-Mig form before travel.
Stays can total up to 180 days per calendar year, and a 90-day extension can be requested from Migración Colombia before the first 90 days end. Your passport should be valid for your whole stay (6 months is recommended) with a blank page, and airlines may ask for a return ticket. The US embassy advises completing Check-Mig between 1 and 72 hours before your flight.