Knowing hartsfield jackson security wait times is essential to avoiding huge waits. The busiest times of day are usually Sunday evenings and early weekday mornings. Every day thousands of people use the security checkpoints in both terminals. Wait times at Hartsfield Jackson security vary, but you can plan with the help of real-time updates. For domestic flights, arrive at least two hours early; for international flights, arrive at least three hours early. Travelers who use CLEAR or TSA PreCheck benefit from faster access via dedicated lanes. If your gate permits flexibility, use checkpoints that are less congested.