LATAM Online Check in times are an important consideration for passengers traveling with LATAM Airlines. For domestic flights, check-in usually opens 48 hours before departure and closes about 60 minutes prior to takeoff. For international flights, it typically opens 48 hours in advance and closes around 90 minutes before departure. Online check-in is available through the airline’s website or mobile app, making the process quicker and more convenient. Passengers are advised to arrive early at the airport to complete baggage drop and security procedures, ensuring a smooth and stress-free travel experience.