Seattle-Tacoma International Airport (Sea-Tac) is generally quite busy, especially during weekday mornings (notably Monday and Friday) due to business travel, as well as holidays. TSA wait times can be longer during these peak periods. Currently, the average wait time at Sea-Tac is around 25 minutes but this fluctuates based on factors such as time of day and passenger volume. Travelers can check real-time TSA wait times through the Port of Seattle website, FlySea app, or MyTSA app. Also, programs like TSA PreCheck, CLEAR Plus, and SEA Spot Saver can help reduce wait times. Construction is still ongoing at the airport, which may affect wait times temporarily. Overall, expect busy conditions at Sea-Tac right now, especially if you are traveling during peak hours or busy seasons, but there are tools to monitor and help manage your time at security checkpoints.