For departures from Orlando International Airport (MCO) in 2026, the general rule is to arrive at the security checkpoint at least 2 hours before domestic flights and 3 hours before international flights. MCO is one of the busiest airports in the United States, and security lines—especially in Terminals A and B—can be notoriously unpredictable due to the high volume of families and tourists. If you do not have TSA PreCheck or CLEAR, it is highly recommended to use the free MCO Reserve service, which allows you to book a specific time slot for security screening up to 7 days in advance. Additionally, Terminal C is now fully operational and often features more advanced screening technology, but the walk times can be longer. During peak holiday periods or school breaks, adding an extra 30–45 minutes to your arrival time is a "pro-tip" to account for busy shuttle trains and potential parking delays, ensuring you reach your gate with enough time to enjoy the airport's diverse shopping and dining options.