Flying with your trusty carry-on bag is practically a right of passage for modern travel. But American Airlines, among others, might be set to shake things up. In 2025 the airline has been rumored to be making plans to implement a revised baggage policy that could redefine what you’re allowed to bring on board. For frequent fliers, this raises an obvious question: what does this mean for you?

The move, if it happens, follows a wave of regulatory changes in European airports, which have created confusion among US-bound passengers. Since Sep. 1, 2024, new EU carry-on standards have tightened what counts as an acceptable bag. American Airlines, alongside other carriers, is reacting with updated guidelines and detailed instructions on its website. But the concern stateside is that it may have more than just an effect in Europe.

What’s happening to carry-on dimensions?

Currently, American Airlines allows a personal item and one carry-on bag per passenger, but the fine print is where things get interesting. Your personal item – think small backpack, purse, or laptop bag – must fit under the seat in front of you and measure no more than 18 x 14 x 8 inches. Carry-ons, on the other hand, have a limit of 22 x 14 x 9 inches, including wheels and handles. Any bigger, and your bag is headed for the cargo hold, often at no extra charge.

The catch? This “generous” policy depends heavily on the size of the plane and the airport you’re flying from. Some airports, including Miami International, have gained a reputation for rigid enforcement, turning away bags that barely exceed the limits. Travelers report that gate-side confrontations over luggage have become almost as common as long TSA lines.

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Will your favorite bag make the cut?

If you’re attached to your current carry-on, it might be time to measure it – again. Starting in 2025, if these rumors are true American Airlines will align its policies more closely with stricter international standards. This could mean shrinking the allowable size for both carry-ons and personal items, a move that could frustrate travelers already struggling to pack light.

Adding fuel to the fire are growing restrictions on what you can pack. Lithium batteries, large drones, and even seemingly innocuous items like pepper spray are banned outright by the TSA. Forget to check your list? You could face fines or legal trouble.

Why is this happening now?

Blame it on regulation creep and logistics. Airlines worldwide are standardizing policies to streamline operations and avoid delays caused by overcrowded overhead bins. European airports have taken the lead, leaving American carriers to follow suit—or risk complications for international fliers.

But there’s also a business side. Tighter restrictions could steer more passengers toward checking bags, a service that conveniently brings in billions of dollars annually for airlines. Whether this is about efficiency or profit is a debate that many travelers won’t take lightly.

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What can you do to stay ahead of the changes?

For now, double-check your bag’s dimensions before your next trip. If it doesn’t fit into a standard airline sizer, be prepared for it to end up in the cargo hold. And while you’re at it, review prohibited items lists from the TSA and FAA. Alcohol over 70% proof? That’s a no. Your trusty Swiss Army knife? Also a no.

The good news is that the expectation is any change by American Airlines would be advised with plenty of notice.

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