Hartsfield-Jackson Atlanta International Airport (ATL) is a bustling airport. In 2025, it served 106.3 million travelers, continuing to hold on to its status as the world’s busiest airport ahead of Dubai and Tokyo Haneda. The record here stands at 110 million passengers in 2019, with airport management planning to serve 125 million annually in the next five years. For travelers, figures such as these bring up one immediate question: how much time will you spend in security?
The answer is that it varies. This guide provides an insight into when ATL’s security checkpoints get the busiest, how five checkpoints differ from one another, how to interpret the wait data at ATL, and how to get through more quickly.
Why Are Wait Times for Security at ATL So Varied?
The fact is there is no one average wait at ATL. It changes with time of day, day of the week, seasonally around holiday travel, and the number of departures during that time period. ATL Airport is also a huge connection center for the USA and the home base of Delta Airlines, meaning banks of departures could all send people to security at once.
It’s not just the volume. Third-party websites give very different numbers. Some have average waits well under 10 minutes; some quote average wait times of 25 to 35 minutes with highs up over 45. These are simply estimates using different methodologies and are not official numbers. Use them as rough estimates; use the official data from the airport.
When is ATL Security Most Busy?
The official guidance at ATL is clear on the peak periods. They occur most frequently from 5 a.m. to 9 a.m. and around holidays/long weekends. Use this information when making your plans:
- Early morning (5 a.m. to 9 a.m.): This is when you get the biggest rush of the day because of the departing flights, so plan accordingly.
- Holidays: You will find the airport busier than usual around long weekends and holidays, regardless of how odd your flight times are.
- Afternoons and evenings: While most travel websites note the second rush during the late afternoons and early evening hours, this claim lacks solid evidence. It is recommended that you check your real-time times before departure.
- Midday: Off-peak hours apart from the early mornings are generally less crowded, but there are no guarantees.
To save yourself the hassle, it is best to schedule a midday flight on a regular day if your schedule allows.
Overview of Security Screening Points at ATL
There are five security checkpoints in ATL, and passengers have access to all gates and concourses from any of them. This means that you may choose from the checkpoints based on waiting times and eligibility. Here are the official security points of the airport:
| Checkpoint | Screening Options | Hours |
|---|---|---|
| Domestic Terminal Main | Standard | 24 hours |
| Domestic Terminal North | Standard, Priority | 4:00 a.m. – 9:00 p.m. |
| Domestic Terminal Lower North | Standard, CLEAR Standard | 3:30 a.m. – 9:00 p.m. |
| Domestic Terminal South | TSA PreCheck, PreCheck Touchless ID, CLEAR + PreCheck | 4:00 a.m. – 9:00 p.m. |
| International Terminal Departures | Standard, TSA PreCheck | 4:30 a.m. – midnight |
Please note that the TSA screening times are subject to change, so please refer to the ATL.com website before your flight for current information. The PreCheck option available at the International checkpoint may be available during specific windows of time, so refer to that checklist if you intend to use this screening process.
The Main checkpoint is the only one that operates 24 hours a day, making it the best choice for extremely early or late flights. PreCheck and CLEAR passengers will have the South checkpoint as their destination.
For How Long Are You Going to Wait?
The ideal solution would be live. The official page on wait times at ATL is automatically updated with the list of checkpoints (Main, North, Lower North, South, and International Main), wait times in minutes, status, and the time when the information was updated. For example, at one mid-morning snapshot, the domestic checkpoints had wait times from one to four minutes, while the International Main checkpoint had two.
This is just one snapshot, and it tells very little about a situation at 5 a.m. or on a holiday Sunday. It will be better to check this site before leaving your home and once again after arriving at the terminal, since the queue can change rapidly. A short line still requires some buffer, since there are parking or rideshare pickup, baggage check, and gate access ahead.
Tips to Passing Through ATL Security Fast
Here are some of the valuable tips for passing through ATL security fast
- Compare checkpoints before lining up. As all checkpoints are connected with all gates, moving to a shorter queue is often worthwhile.
- TSA PreCheck is available. It allows keeping your shoes, belt, and coat and carry your laptop and 3-1-1 liquids in your carry-on baggage. PreCheck application, interview, and fingerprinting take place online and at any enrollment center.
- CLEAR Plus is available. This biometric service provides you access to dedicated lanes at checkpoints. Enrollment is possible online and at CLEAR pods in the Domestic Terminal close to the Main checkpoint.
- Come in advance. Two hours prior to domestic flights and three hours prior to international flights are recommended, even more during busy times.
- Prepare for screening. 3-1-1 liquids regulation should be observed, and electronics should be easily accessible if not enrolled in PreCheck.
- Reach out in advance. TSA Cares asks you to contact them 72 hours before flight, and all ATL checkpoints are ADA accessible.
ID Requirements That Can Create a Hassle
ID requirements can be easily avoided as one of the major factors that contribute to the delays. A driver’s license not compliant with the requirements of REAL ID will not be accepted at the TSA checkpoints for domestic flights, and PreCheck members do not get exceptions. Instead, travelers may use a passport, DHS Trusted Traveler card, including Global Entry, or military ID. Also, the mobile driver’s license and digital passports such as those of Google and Apple are acceptable.
As of February 1, 2026, travelers who do not have an acceptable ID may pay $45 to undergo verification by the TSA ConfirmID service, which takes 10 to 15 minutes but can take up to 30 minutes or even longer. Travelers who refuse it will be denied access to the secure area. However, the easiest way to deal with it is to come with a REAL ID or passport.
Conclusion
Wait times at the airport in Atlanta are uncertain, but they are reasonable if you plan properly. Try to avoid early morning hours and holidays if possible; use the live wait times website from ATL.com; choose the appropriate checkpoint according to the kind of security check you require. Ensure you have a REAL ID or a passport on hand, and think about joining PreCheck or CLEAR if you travel regularly.
FAQs
Two hours ahead of domestic departure and three hours ahead of the international one.
During peak periods between 5 a.m. and 9 a.m., and during holidays and long weekends.
No, since all gates and concourses are accessible from all checkpoints, go through the nearest checkpoint.
The official ATL Security Wait Times website: atl.com/times.
Normally not, since only passengers holding tickets are allowed through the security checkpoints, except in special cases where the airline issues a gate pass to one person traveling with a disabled person or a minor.