TSA Rules Travelers Should Know: 2025 Guide

Traveling can be an exhilarating experience, but navigating airport security doesn’t have to be a source of stress. Understanding the ever-evolving **TSA Rules Travelers Should Know** is crucial for a smooth journey, helping you avoid delays and ensure your belongings are packed correctly. Our team at Travel Support researches airline booking policies and travel assistance resources, and we’ve compiled this comprehensive guide to help you prepare for your next flight with confidence, covering everything from identification to what’s allowed in your bags, especially with updates for 2025 and 2026.

What are the Latest TSA Rules Travelers Should Know for 2025-2026?

Staying informed about the latest TSA regulations is key to avoiding surprises at the airport. The Transportation Security Administration continuously updates its policies to enhance security and improve efficiency, especially as new technologies become available. Our team closely monitors these changes to provide you with the most current guidance.

One of the most significant updates for travelers is the official end of the long-standing “shoes-off” policy at airport security checkpoints for all travelers as of **July 8, 2025**, according to the Department of Homeland Security (DHS). This change reflects advancements in security technology that allow for thorough screening without requiring footwear removal. Another critical upcoming change is the **REAL ID deadline 2025**, which will impact domestic air travel identification requirements. We’ll dive deeper into this below, but mark your calendars for **May 7, 2025**.

The TSA screened over 904 million people in 2024, a testament to the sheer volume of travelers moving through U.S. airports. These numbers highlight why efficient and clear TSA rules are so important. While some rules remain constant, such as the general principles of the 3-1-1 liquid rule, the introduction of advanced CT scanner technology at various airports is gradually changing how liquids and electronics are screened, making the process smoother for many. Understanding these evolving TSA rules travelers should know ensures you’re prepared for whatever checkpoint technology your airport uses.

Understanding the 3-1-1 Liquid Rule and CT Scanner Updates

The 3-1-1 liquid rule has been a cornerstone of airport security for years, and it’s still largely in effect. This rule helps prevent the transport of dangerous liquid explosives. It’s one of the most common TSA rules travelers should know, and misunderstanding it often leads to delays.

The Core of the 3-1-1 Liquid Rule

For most liquids, gels, and aerosols in your carry-on bag, you must adhere to these three simple guidelines:

1. Containers must be **3.4 ounces (100 milliliters) or less**.
2. All containers must fit into **one quart-sized, clear, resealable bag**.
3. Each passenger is limited to **one such bag**.

This means you should pack your shampoo, toothpaste, lotions, and other similar items in travel-sized containers. Place your single quart-sized bag in an easily accessible spot in your carry-on, as you’ll typically need to remove it for separate screening at the security checkpoint. For more detailed guidance, our article on Carry-On Baggage Rules Explained provides additional insights.

TSA Liquid Rule Exceptions You Need to Know

While the 3-1-1 rule is strict, there are important exceptions, particularly for essential items. These include:

• Medically necessary liquids: This covers items like insulin, EpiPens, liquid prescription medications, and even over-the-counter medications like cough syrup. These are exempt from the 3.4-ounce limit but must be declared to a TSA officer for separate screening.
• Infant and toddler nourishment: Breast milk, formula, and baby food (including juice) are also exempt from the 3-1-1 rule. Again, declare these items to the officer, and they may undergo additional screening.
• Frozen solid liquids: If a liquid is completely frozen solid when you present it for screening, it is generally allowed in any quantity. However, if it’s partially melted, slushy, or has any liquid at the bottom, it must follow the 3-1-1 rule.

These **TSA liquid rule exceptions 2025** are vital for travelers with specific needs. Always declare these items at the checkpoint to ensure a smooth process.

New CT Scanner Rules: A Game Changer for Liquids and Electronics

Many airports across the U.S. are upgrading their security technology to Advanced Imaging Technology (AIT) using Computed Tomography (CT) scanners. These new CT scanner rules offer a more detailed 3D view of your bag’s contents, which can significantly streamline the screening process.

In airports equipped with these advanced scanners, you may no longer need to remove your quart-sized bag of liquids or your electronics (like laptops and tablets) from your carry-on. This is a huge convenience, saving time and hassle. However, here’s the crucial caveat: **not all airports have these scanners yet**. The TSA’s “What Can I Bring?” tool on their official website (tsa.gov) is your best friend here. While it doesn’t always specify scanner types, the general advice is to prepare as if you’ll encounter a traditional X-ray scanner, meaning liquids out and electronics out, to avoid delays. When in doubt, always follow the 3-1-1 rule and remove electronics, unless a TSA officer explicitly instructs you otherwise.

Do You Still Need to Remove Shoes at TSA Security?

For years, the ritual of removing shoes at airport security has been a familiar, if somewhat annoying, part of the travel experience. However, that’s changing soon. The Department of Homeland Security (DHS) has officially announced that the long-standing “shoes-off” policy will end for all travelers as of **July 8, 2025**.

This policy shift is a direct result of advancements in security technology. New scanners and screening procedures are now capable of detecting potential threats without requiring passengers to remove their footwear, making the screening process more efficient and less cumbersome for everyone. While this is a welcome change for general travelers, those enrolled in TSA PreCheck have enjoyed this benefit for quite some time, as well as keeping their laptops and 3-1-1 compliant liquids in their bags. Many TSA PreCheck members experienced an average security wait time of five minutes in February 2024, with 99% typically waiting less than 10 minutes, highlighting the program’s efficiency. Even after July 2025, PreCheck will continue to offer expedited screening benefits that go beyond just keeping your shoes on, such as not having to remove belts or light jackets.

REAL ID and Other Acceptable IDs for Domestic Flights

One of the most critical **TSA Rules Travelers Should Know** for upcoming domestic flights concerns identification. The **REAL ID deadline for flying 2025** is fast approaching, and it’s essential to ensure your identification is compliant.

The REAL ID Requirement

As of **May 7, 2025**, all adult travelers aged 18 and older will need to present a REAL ID-compliant driver’s license or another acceptable form of identification to fly domestically within the United States. A REAL ID-compliant driver’s license or state ID card is typically identifiable by a **star symbol** located in the upper corner of the card. This star signifies that your ID meets the enhanced security standards set by the REAL ID Act of 2005. If your current driver’s license does not have this star, it will not be accepted for domestic air travel after the deadline.

Acceptable Forms of ID Beyond REAL ID

Don’t worry if you don’t have a REAL ID-compliant driver’s license or can’t get one before the deadline. The TSA accepts several other forms of identification for domestic flights. These include:

• A valid U.S. passport
• A U.S. passport card
• DHS trusted traveler cards (e.g., Global Entry, NEXUS, SENTRI, FAST)
• Permanent resident card
• Border crossing card
• DHS-designated enhanced driver’s license
• Federally recognized, tribal-issued photo ID
• HSPD-12 PIV card
• Foreign government-issued passport
• Canadian provincial driver’s license or Indian and Northern Affairs Canada card
• Transportation worker identification credential (TWIC)
• U.S. Citizenship and Immigration Services Employment Authorization Card (I-766)
• U.S. Merchant Mariner Credential
• U.S. Department of Defense ID, including IDs issued to dependents

Our team advises all travelers to check their current ID now to determine if it’s REAL ID compliant. If not, consider applying for a compliant ID at your local DMV or ensuring you have an alternative acceptable ID, like a U.S. passport, ready for your travels after May 7, 2025. You can find more information about REAL ID requirements on the official DHS REAL ID website. For a complete guide to domestic travel, refer to our Complete Domestic Flight Guide.

What Items Are Prohibited or Restricted in Carry-On and Checked Bags?

Knowing what you can and cannot bring on a plane is fundamental to a stress-free airport experience. The list of **prohibited items airport** security looks for is extensive, covering everything from dangerous weapons to seemingly innocuous household goods. The key distinction is often whether an item is allowed in a carry-on bag, a checked bag, or neither.

Common Prohibited Items in Carry-On Bags

The TSA’s primary goal is to prevent potential threats from entering the aircraft cabin. Therefore, items that could be used as weapons or pose a safety risk are generally forbidden in carry-on luggage. The most common **carry-on prohibited items list** includes:

• Firearms: Absolutely no firearms are allowed in carry-on bags. They must be unloaded, declared, and properly packed in a locked, hard-sided container in checked luggage. In 2024, the TSA intercepted 6,678 firearms at airport security checkpoints, with approximately 94% of these firearms loaded, highlighting the ongoing challenge.
• Knives: Blades longer than 4 inches are prohibited in carry-on bags. Smaller knives (e.g., butter knives, plastic knives) are generally fine, but it’s often safer to pack any knife in a checked bag.
• Sharp Objects: Box cutters, ice axes, swords, and razor blades (except disposable razors) are not allowed.
• Self-Defense Sprays: Pepper spray, mace, and other self-defense sprays are prohibited in carry-on bags. However, one 4 fl. oz container is permitted in checked bags, provided it has a safety mechanism to prevent accidental discharge.
• Flammable Liquids: Lighter fluid, gasoline, torch lighters, and other highly flammable materials are strictly prohibited in both carry-on and checked bags.
• Explosives and Incendiaries: This includes fireworks, flares, and any items designed to cause an explosion or fire.
• Alcoholic Beverages over 140 Proof (70% alcohol by volume): These are not permitted in either carry-on or checked bags due to fire risk.

Even if an item isn’t explicitly on a list, “The final decision rests with the TSA officer on whether an item is allowed through the checkpoint.” This discretionary power means that if an officer perceives an item as a potential threat, they can prohibit it.

Restricted Items in Checked Bags

While checked bags offer more flexibility, certain items are still restricted or require specific packing:

• Firearms and Ammunition: As mentioned, firearms must be unloaded, declared to the airline, and packed in a locked, hard-sided container. Ammunition must be properly boxed and also declared.
• Certain Batteries: Spare lithium-ion batteries and power banks are generally prohibited in checked bags due to fire risk and must be carried in carry-on luggage. This is a crucial safety rule, as the FAA recorded 89 incidents caused by lithium-ion batteries overheating or catching fire on commercial and cargo flights in 2024.
• Cordless Hair Styling Tools with Gas Cartridges: Cordless curling or flat irons that use butane or other gas cartridges, along with their spare cartridges, are generally not allowed in checked luggage as of August 25, 2025. These should be in carry-on bags with the safety cover securely in place.

Always check the TSA’s “What Can I Bring?” tool on their website for specific items, as rules can change. When in doubt, pack it in a checked bag if possible, or leave it at home.

Traveling with Special Items: Medications, Electronics, Firearms, and More

Beyond the everyday items, many travelers have unique needs or specialized equipment. Understanding how TSA rules apply to these “edge cases” can prevent significant headaches at the security checkpoint. These are some of the more nuanced **TSA Rules Travelers Should Know**.

Medications and Medical Devices

Traveling with medications, especially liquid prescription medications or medical devices, often raises questions. The good news is that the TSA is generally accommodating for medically necessary items.

• Liquid Medications: As mentioned earlier, medically necessary liquids are exempt from the 3-1-1 rule. This includes liquid prescription medications, over-the-counter liquid medications, and medical gels or creams. You do not need to limit them to 3.4 ounces, but you **must declare them** to a TSA officer at the checkpoint for separate screening.
• Pills and Solid Medications: Pills, capsules, and other solid medications are generally allowed in both carry-on and checked bags without quantity limits. It’s often recommended to keep prescription medications in their original labeled containers to avoid questions, especially if traveling internationally.
• Medical Devices: Items like syringes (with accompanying medication), insulin pumps, CPAP machines, and mobility aids are permitted. It’s helpful to have a doctor’s note for syringes or other sharp medical instruments, though not strictly required by TSA. Travelers can also use a TSA Notification Card to communicate a disability or medical condition discreetly.

When in doubt about a specific medical item, contact the TSA directly or check their website’s “What Can I Bring?” tool.

Electronics and Batteries

Electronics are almost a given in modern travel, but their batteries require special attention due to fire safety concerns.

• Laptops, Tablets, and E-readers: At airports with traditional X-ray scanners, you’ll need to remove these from your carry-on bag and place them in a separate bin for screening. However, if your airport has the newer CT scanners, you can often leave them in your bag. TSA PreCheck members can always keep laptops in their carry-on.
• Portable Chargers, Power Banks, and Spare Lithium Batteries: These items **must be transported in carry-on bags only**. They are prohibited in checked luggage due to the risk of overheating and fire. This includes batteries for cameras, drones, and other devices. The FAA recorded 89 incidents caused by lithium-ion batteries overheating or catching fire on commercial and cargo flights in 2024, emphasizing this critical rule.
• E-cigarettes and Vaping Devices: These must also be in your carry-on bag and cannot be charged or used on the aircraft.
• Cordless Hair Styling Tools with Gas Cartridges: As of August 25, 2025, cordless hair styling tools (curling/flat irons) with gas cartridges or butane, and their spare cartridges, are generally **not allowed in checked luggage**. They are permitted in carry-on bags with the safety cover securely in place.

Always ensure your electronics are charged sufficiently to power on if requested by a TSA officer. This is part of the **TSA rules for electronics** that helps verify they are legitimate devices.

Firearms and Ammunition

Traveling with firearms is a highly regulated area, and strict adherence to all rules is mandatory.

• Checked Bags Only: Firearms are strictly prohibited in carry-on bags. They must be transported in a checked bag.
• Unloaded and Declared: The firearm must be unloaded and encased in a locked, hard-sided container. You must declare the firearm and any ammunition to the airline at the check-in counter.
• Ammunition: Ammunition must be securely packed in boxes or other containers designed to carry small arms ammunition and can be placed in the same hard-sided container as the firearm or in a separate checked bag.

“When a firearm is detected at a security checkpoint, a TSO immediately contacts local law enforcement, who will remove the individual and the firearm from the checkpoint area.” This highlights the serious consequences of not following **firearms travel regulations**.

Other Unique Items

Some less common items also have specific rules:

• Musical Instruments: Small instruments that fit in the overhead bin or under the seat can be carried on. Larger instruments may require a separate seat purchase or must be checked as fragile luggage. Always check with your airline for their specific policies.
• Cremated Remains: These can be transported in carry-on or checked bags. If carried on, they must pass through the X-ray machine. The container must be made of a material that allows the X-ray to see through it (e.g., wood, plastic, non-lead-lined ceramic).
• Hemp-Derived Products (e.g., CBD, THCA): While many hemp-derived CBD products are legal under federal law (containing less than 0.3% THC), state laws vary, and TSA officers must comply with federal regulations. The TSA’s stance is that products containing THC greater than 0.3% are illegal under federal law and cannot be carried. It’s a complex area, so always err on the side of caution or leave these products at home.

Remember the golden rule: “The final decision rests with the TSA officer on whether an item is allowed through the checkpoint.” If you’re unsure about any item, especially an unusual one, always check the TSA website or contact them directly before you travel.

What Are Your Rights During a TSA Security Screening?

Understanding **what are your rights during a TSA security screening** is just as important as knowing what to pack. While TSA officers have broad authority to conduct administrative searches to ensure passenger safety, travelers also have specific protections. Knowing these can help you navigate the process confidently.

Refusing Advanced Imaging Technology (AIT) for a Pat-Down

You have the right to refuse screening by the Advanced Imaging Technology (AIT) machine. If you opt out of the AIT scan, you will receive an alternative screening, which will include a pat-down. If you have concerns about the pat-down, you can request that it be conducted in a private screening area. You can also request a pat-down by an officer of the same gender.

Private Screenings and Special Accommodations

If you have a medical condition, disability, or religious consideration that makes a public screening uncomfortable, you can request a private screening. This will be conducted in a separate room, away from public view, and you can bring a companion to observe, provided they also undergo screening. For travelers with disabilities or medical conditions, you can request assistance, alternative screening methods (like remaining seated for a pat-down with mobility devices), or use a TSA Notification Card to communicate your needs. These **traveler rights airport security** provisions are designed to ensure dignity and respect.

Electronic Device Searches: TSA vs. CBP

It’s important to differentiate between the authority of TSA and U.S. Customs and Border Protection (CBP) regarding electronic device searches. The TSA primarily focuses on physical threats and generally does not search the contents of your electronic devices. However, U.S. Customs and Border Protection (CBP), which you encounter when entering