For entry into Costa Rica, U.S. citizens must present valid passports that will not expire for at least six months after arrival, and a roundtrip/outbound ticket. Some U.S. airlines may not permit passengers to board flights to Costa Rica without such a ticket. Passports should be in good condition; Costa Rican immigration will deny entry if the passport is damaged in any way. Costa Rican authorities generally permit U.S. citizens to stay up to ninety days.
