The Transportation Security Administration’s rules, your rights during screening, and the penalties for violations together shape every U.S. commercial flight from the ID check at the podium to the checked bag disappearing down the belt. You are required to present acceptable identification, follow the limits on what goes in carry-on and checked baggage, and cooperate with screening. In return, you can decline certain optional technologies, request accommodations, and seek redress or reimbursement when something goes wrong. Break the rules and the consequences run from a warning notice to federal prison, depending on what you did and whether you meant to do it.
Identification You Must Present
REAL ID enforcement began on May 7, 2025. Since that date, boarding a domestic flight requires either a REAL ID-compliant driver’s license or state ID, or one of several other federally accepted documents.1Transportation Security Administration. REAL ID A gold star or similar marking in the upper corner of your license means it is compliant. No star means you need an alternative.
Alternatives the TSA accepts include a U.S. passport or passport card, a Department of Defense ID, a permanent resident card, a DHS trusted traveler card (Global Entry, NEXUS, SENTRI, or FAST), a Transportation Worker Identification Credential, a Veteran Health Identification Card, and several other federal documents.2Transportation Security Administration. Acceptable Identification at the TSA Checkpoint Foreign passports also work. At select airports, digital IDs through Apple, Google, or Clear are accepted as part of an ongoing TSA pilot.
Arrive with no acceptable ID and you are not automatically turned away, but you will pay. Beginning February 1, 2026, the TSA ConfirmID system charges $45 to verify your identity using biographic and biometric data. The process can take up to 30 minutes, and the agency warns it may cause you to miss your flight.3Transportation Security Administration. $45 Fee Option for Air Travelers Without a REAL ID Begins February 1 Not a backup worth relying on.
What Screening Looks Like
At the podium, an officer checks your ID and boarding status, often with Credential Authentication Technology that reads the security features in your document. From there, your body and belongings go through separate processes.
Body Screening
Most passengers walk through an Advanced Imaging Technology body scanner, which produces a generic outline image to flag concealed objects. If AIT is unavailable or you decline it, a walk-through metal detector is used instead. Either way, an alarm triggers a targeted pat-down of the area involved. You can request a private screening room at any point and bring a witness of your choice. Pat-downs are always performed by an officer of the same sex.4Transportation Security Administration. What Can I Expect During Pat-Down Screening?
Carry-on and the 3-1-1 Rule
Carry-on bags run through X-ray equipment, with more airports moving to Computed Tomography scanners that produce three-dimensional images. The 3-1-1 rule governs liquids, gels, and aerosols: each container 3.4 ounces (100 milliliters) or smaller, all containers in a single quart-sized bag, one bag per passenger.5Transportation Security Administration. Liquids, Aerosols, and Gels Rule
Medically necessary liquids are exempt. Prescription medications, baby formula, breast milk, and other medical liquids may exceed 3.4 ounces in reasonable quantities for your trip, but you must declare them to the officer before screening starts.6Transportation Security Administration. Medications (Liquid) Expect additional inspection.
Checked Baggage and Firearms
Checked bags pass through Explosive Detection Systems separately from the passenger checkpoint. Firearms may travel only in checked baggage. They must be unloaded, declared to the airline at the ticket counter, and locked in a hard-sided container that prevents access.7Transportation Security Administration. Transporting Firearms and Ammunition A soft case or a container that can be pried open does not meet the requirement. Ammunition can go in the same checked bag but must be in a separate container designed for that purpose. Bringing a firearm to the checkpoint instead of declaring it in checked baggage carries the penalties described below.
Faster Screening Through TSA PreCheck
TSA PreCheck lets pre-approved travelers use dedicated lanes with fewer requirements. Shoes, belts, and light jackets stay on; laptops and compliant liquids bags stay inside your carry-on.8Transportation Security Administration. TSA PreCheck Enrollment is $76.75 for five years, with online renewals at $58.75.9IDEMIA TSA Enrollment. Apply for TSA PreCheck – Enrollments and Renewals You apply online, then finish in person at an enrollment center where fingerprints are collected. Once approved, you receive a Known Traveler Number to add to airline reservations. PreCheck status does not guarantee expedited screening on every flight; the TSA can send any traveler to the standard lane at any time.
Your Rights During Screening
Declining Facial Recognition
The TSA has deployed facial comparison technology at a growing number of checkpoints, using podium cameras to match your face against your ID photo. Participation is voluntary. You can decline the photo without consequence, and an officer will verify your identity through a traditional credential check instead. The agency says opting out does not cause delays and you do not lose your place in line.10Transportation Security Administration. Facial Comparison Technology Travelers under 18 are not photographed. Signage is supposed to note that the technology is optional, but it is easy to miss. If you want to opt out, say so before the camera captures your image.
Disabilities and Medical Conditions
Every passenger goes through screening, but the TSA accommodates disabilities and medical conditions throughout the process. You can notify the officer verbally, with a TSA Notification Card, or with medical documentation. If you use a wheelchair or cannot stand for the AIT scanner, officers will screen you while you remain seated.11Transportation Security Administration. Disabilities and Medical Conditions Bandages, casts, compression sleeves, and prosthetics may trigger additional screening, including a hand-held metal detector and explosive trace testing. Calling the TSA Cares helpline (855-787-2227) at least 72 hours before your flight lets you arrange support in advance.
Service Animals
The TSA will not separate you from your service animal. You and the animal walk through the metal detector together, or separately on a leash, your choice. If the detector alarms, both of you get a pat-down. The animal’s collar, harness, vest, and leash go through visual inspection and possibly a pat-down, but items needed to control the animal do not have to be removed. An officer will ask permission before touching the animal.12Transportation Security Administration. I Have a Service Animal, What Type of Screening Should I Expect? Leaving the secure area to relieve the animal means going through screening again on your return, but you can ask to move to the front of the line.
Redress for Repeated Delays
Regularly pulled aside for extra screening, denied boarding, or delayed at a port of entry? If you think there has been an error, the Department of Homeland Security Traveler Redress Inquiry Program is the route to fix it. You apply online through the DHS TRIP portal, and the system assigns a seven-digit Redress Control Number to track your case.13Department of Homeland Security. Traveler Redress Inquiry Program (DHS TRIP) Once review is complete, you can add that number to future airline reservations. The agency does not publish a standard processing timeline, so submit sooner rather than later if you fly often.
Penalties for Security Violations
Consequences run from a warning notice to federal prison, depending on the conduct.
Civil Fines
The TSA can impose civil fines of up to $17,062 per violation. Bringing a loaded firearm to a checkpoint (the TSA considers a gun “loaded” if both the firearm and ammunition are accessible to you anywhere on your person or in your bags) triggers penalties between $3,000 and $12,210 plus a criminal referral. Repeat offenders face $12,210 to $17,062. Prohibited weapons like switchblades, hatchets, and throwing stars usually draw a warning on the first offense and $450 to $2,570 on later violations. Stun guns, tasers, realistic firearm replicas, and BB guns carry $450 to $2,570 fines on a first offense.14Transportation Security Administration. Civil Enforcement
The fines are not theoretical. TSA officers intercepted 6,678 firearms at airport checkpoints in 2024, roughly 18 per day.15Transportation Security Administration. TSA Intercepts 6,678 Firearms at Airport Security Checkpoints in 2024 Most people caught say they forgot the gun was in the bag. That explanation does not waive the fine.
Criminal Charges
Assaulting or interfering with anyone performing security duties at a commercial airport, which includes ticketing agents and gate staff and not only TSA officers, is a federal crime punishable by up to 10 years in prison. If a dangerous weapon is involved, the sentence can extend to life imprisonment.16Office of the Law Revision Counsel. 49 US Code 46503 – Interference With Security Screening Personnel Separately, knowingly entering a restricted airport area or an aircraft in violation of security requirements is a federal offense carrying up to one year in prison, or up to 10 years if the entry was intended to evade security procedures or commit a felony.17govinfo. 49 US Code 46314 – Entering Aircraft or Airport Area in Violation of Security Requirements
Unauthorized Drones Near Airports
Flying an unauthorized drone near a commercial airport draws federal enforcement. The FAA updated its policy in 2026 to require legal action when drone operations endanger the public or violate airspace restrictions. Penalties can reach $75,000 per violation, and the FAA can suspend or revoke a pilot certificate even for recreational operators.18Federal Aviation Administration. FAA Steps Up Drone Enforcement in 2025 Criminal charges and drone confiscation are also possible for serious violations.
If TSA Damages Your Property
You can file a federal tort claim for reimbursement when a TSA officer damages property during screening, but only if the damage resulted from TSA employee negligence. Damage caused by the airline, such as a cracked suitcase from baggage handling, goes to the airline, not the TSA.19Transportation Security Administration. Tort Claim Package
You have two years from the date of the incident. The claim must include an exact dollar amount, the specific date and location, a written description of what happened, and your signature. Supporting documentation moves the process along:
- Purchase receipts, with originals preferred; credit card or bank statements work as substitutes.
- Travel records, including boarding passes, baggage tags, and any TSA-issued documents from the trip.
- Repair or replacement estimates; if the item cannot be repaired, get a written statement from the repair shop confirming that.
- Photographs of the damaged item, before and after if possible.
One wrinkle: airports that use private screening companies under the TSA’s Screening Partnership Program handle claims differently. At those airports, you file directly with the private screening company rather than the TSA.