What can you bring on a plane?

A real traveler’s guide to TSA rules in 2025

Let’s be honest—packing for a flight can be confusing. Can you bring snacks? A full-size shampoo? What about a curling iron? TSA rules aren’t always crystal clear, and nobody wants to be that person holding up the line at security.

So let’s break it down. The 3-1-1 rule still stands in 2025: liquids must be in containers 3.4 ounces or less, all must fit in one quart-size clear bag, and you’re allowed one bag per person. That includes lotion, sunscreen, toothpaste, and yes—even things like peanut butter (yep, it counts as a liquid).

But here’s where it gets interesting: TSA is also paying more attention to powders and electronics. If you’re not in TSA PreCheck, you may be asked to take tablets, handheld game consoles, and chargers out of your bag for screening. It’s smart to pack those items in easy-to-reach pockets.

What about snacks? Totally fine. Granola bars, crackers, sandwiches—they're all good to go through security. Just avoid anything too creamy or liquid-y (like yogurt or applesauce) unless it's in a tiny travel-size container.

Medications are allowed in larger quantities and don’t need to go in your quart bag—but it helps to label them and keep them in original packaging if possible.

And yes, you can bring your favorite curling iron or flat iron. Just make sure it’s cool before you pack it.

Bonus tip? If you’re traveling with kids, you can bring formula, breast milk, or baby food—even in amounts over 3.4 oz. Just let the agent know, and they’ll screen it separately.

Bottom line: a little knowledge goes a long way. When you know the rules ahead of time, you can pack confidently, breeze through security, and start your trip off on the right foot.