Whenever you book a flight, you’re signing up for an adventure — one that begins with navigating airport security. Amid the hustle of avoiding bag searches and making it to your gate on time, the Transportation Security Administration (TSA) continues to update the policies and guidelines that shape how we travel. With several new rules now in effect, it’s more important than ever to know what to expect before you head to the airport. Fortunately, through MidAmerica St. Louis Airport (BLV), the TSA process is simple and convenient, helping you breeze through security and start your journey stress-free.
“Shoes-Off” Rule Lifted
As of July 8, the Department of Homeland Security (DHS) officially ended the long-standing “shoes-off” policy at airport security checkpoints. Now, all travelers — not just TSA PreCheck members — can keep their shoes on during TSA screening. This change is made possible by advanced security technology that enhances safety without sacrificing convenience. The updated policy is designed to streamline the screening process, reduce wait times and make the overall travel experience more efficient and comfortable.
Recently Banned Items in Checked Bags
While TSA’s new multi-layered security approach allows more flexibility in some areas, checked luggage remains strictly regulated. As of August 25, TSA has banned three new items from checked bags: cordless curling and flat irons with gas cartridges, butane-filled curling and flat irons and spare gas cartridges for these tools. According to the Code of Federal Regulations, these items may contain flammable hydrocarbon gases like butane, which pose a fire risk in aircraft cargo holds.
Travelers are still allowed to bring one cordless, butane-powered hairstyling tool in their carry-on bag, as long as it’s for personal use and properly protected in a safety case to prevent accidental activation. Spare butane cartridges, however, are completely banned.
To avoid having your luggage flagged as hazardous materials (HAZMAT), make sure all allowed hairstyling tools are packed securely and follow TSA guidelines.
3-1-1 Rule Exemptions
Not all recent TSA updates are about adding restrictions — some are actually making packing a bit easier. With the help of advanced CT scanners at major U.S. airports, TSA has started allowing exemptions to its long-standing 3-1-1 liquids rule. Frequent flyers know the 3-1-1 rule well: liquids must be in containers no larger than 3.4 ounces, fit into one quart-size bag, and each passenger is allowed just one bag. Originally created to prevent liquid explosives from being smuggled on board, this rule has been a standard part of air travel for years.
Now, TSA has approved 11 specific liquid items that are exempt from the 3-1-1 rule. These items can be carried in any amount in your carry-on bag:
- Prescription medications (in original packaging)
- Over-the-counter medications
- Ice and gel packs
- Breast milk or formula
- Baby food
- Liquid-filled teethers
- Live fish
- Biological samples
- Wet batteries
- Duty-free purchases (within 48 hours)
- Fresh eggs
However, it’s important to note that this update is currently limited to major airports with the right CT scanning equipment, including Atlanta (ATL), New York (JFK) and Los Angeles (LAX). Most other U.S. airports — including BLV— will continue to enforce the 3-1-1 rule until the necessary technology is fully rolled out.
Also, this exemption does not apply to international connecting flights. So, before you pack, be sure to check your departure airport’s current policy and confirm any airline-specific rules.
Other TSA Rule Changes
The TSA has also introduced two major rule changes travelers should be aware of:
- REAL ID Requirement (Effective May 7, 2025)
The TSA will only accept REAL IDs or enhanced driver’s licenses for all domestic flights. You can recognize a REAL ID by the star in the upper right corner of the license, although the design may vary by state. If you don’t have a REAL ID, you’ll need another form of acceptable ID, such as a passport or passport card to board your flight. Otherwise, you will not be allowed through security. The REAL ID rules apply the same at BLV as they do at any other U.S. airport. - Lithium Phone Charger Restrictions (Effective March 1, 2025)
Lithium-powered portable phone chargers (also called power banks) are no longer allowed in checked luggage. However, you can still bring them in your carry-on bag, if they stay within easy reach during your flight, which is similar to the rules for cordless hairstyling tools.
Why These Changes Matter to BLV Travelers
As TSA updates its policies to improve both safety and convenience, it’s important for travelers — especially those flying out of BLV — to stay informed. Knowing what’s allowed in checked bags, understanding any updates to the 3-1-1 rule and making sure your ID meets REAL ID requirements can help you avoid delays at security. Staying prepared means fewer surprises and a smoother, more confident travel experience from the moment you arrive at the airport.