Security wait times at Orlando International Airport (MCO) are notoriously unpredictable due to the high volume of families and travelers unfamiliar with TSA procedures. On average, standard security lines take between 20 and 45 minutes, but during peak holiday seasons (Spring Break, Christmas) or early morning "rush hours," wait times can easily exceed 60 minutes. In 2026, MCO has several tools to help mitigate this: MCO Reserve is a free service that allows you to book a specific time slot to go through security, effectively bypassing the main queue. TSA PreCheck users typically experience much shorter waits, often under 10 minutes. The airport is divided into three terminals (A, B, and C); Terminal C generally has the most modern screening technology and slightly more consistent flow. The Greater Orlando Aviation Authority recommends arriving at the security checkpoint at least two hours before a domestic flight and three hours before an international one. Travelers can check real-time wait times on the MCO official website or the "MyTSA" app before heading to the airport.