One of the busiest airports in the US is Denver International Airport (DEN), and managing security lines can be a major aspect of your trip. The Denver Airport Security Wait Times of day, the day of the week, and whether you’re traveling on a vacation or during a busy season can all have a big impact on security queues. Wait times are typically larger on weekends, early in the morning, and in the evening when flights are more common. Since a lot of planes leave early in the morning, the busiest hours are usually between 5 to 8 a.m. Wait times at security during these busy periods can be anything from 15 to 30 minutes, or longer if there is an increase in the number of passengers.