17 Items Banned from Checked Bags at Montana Airports

Montana has quickly become one of America’s go-to summer vacation destinations. If you’re in the middle of planning your trip, there are a few important things to keep in mind before you zip up those suitcases.

With temperatures running well above average, travelers are already locking in plans for Spring Break and the warmer months ahead. That means airports are gearing up for another busy season. The Bozeman Yellowstone International Airport is easily the busiest in the state. In 2025 alone, it served nearly 3 million passengers, and even more travelers are expected to pass through in 2026.

If you’re flying out of BZN, airport staff recommend arriving at least two hours before your scheduled departure to allow plenty of time for check-in and security screening.

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In addition to arriving on time for your flight, it's also important to know what items are prohibited in your baggage. Most travelers are already familiar with items allowed in carry-on bags, but what about checked luggage?

Check the "What You Can Bring" page on the TSA website to ensure you won't have any issues. Honestly, you don't want to get excited about taking a trip only to be turned away by airport security.

There are actually a large number of items that are prohibited in checked bags that most people aren't aware of. From cordless curling irons to power banks, some items are absolutely off-limits.

If an item in your bag triggers an alarm during the security screening process, you could receive a fine or even get arrested.

Below, we've compiled a list of 17 items that are prohibited in checked luggage at airports across Montana. For a full list of items, visit the TSA website.