Please check travel requirements from your country to Colombia If coming from USA you will need a valid US Passport and to complete Colombia’s immigration (up to 72 hours ahead of time). Linked is the US Department of State website with further details as well as the Migración Colombia

https://travel.state.gov/content/travel/en/international-travel/International-Travel-Country-Information-Pages/Colombia.html

Fill out your migración at this link below 72 hours before your flight :)

https://apps.migracioncolombia.gov.co/pre-registro