It is recommended to be at the airport three hours before departure for international flights. The safety regulations are, depending on international events, quite strict and intensive controls are carried out. If you booked a transfer for your return flight from your hotel, you will find the corresponding pick-up time on your transfer information. At the international airports of San José and Liberia, a departure tax has to be paid, which is already included in most airline ticket prices. In the rare cases that it has to be paid directly at the airport, you will be informed at your airline’s check-in counter. Check here whether this applies to your airline or consult them under the following link: Juan Santamaría Intl. (SJO) http://fly2sanjose.com/en/antes-de-viajar/inclus ion-de-impuestos-de-salida/ Daniel Oduber Quirós Intl. (LIR) http://www.liberiacostaricaairport.net/Entry_Exit_ Requirements.html