Leaving Montana? These Items Are Banned at State Airports

We’re in the peak of tourist season in Montana, and it's the busiest time of the year for airports across the state. Before you pack your bags, you need to know about these banned items.

During the summer, airports in Montana deal with thousands of travelers daily, and it's not uncommon for people to be stopped for a bag search by TSA agents. To save you some trouble, we've put together a list of items that you should leave at home.

The Bozeman Yellowstone International Airport is the busiest in the state by far. In 2025, BZN welcomed over 2.8 million passengers, setting an all-time record. With even more traffic expected in 2026, long security lines mean you’ll want to avoid any extra delays.

Get our free mobile app

Here are the Most Common Prohibited Items at Montana Airports

• Bear Spray: Banned in carry-ons and checked luggage on commercial flights due to discharge risks. Donate or recycle your can before heading to the terminal.

• Pocket Knives & Multi-Tools: A staple in local pockets, but any blade must be securely packed in checked baggage.
• Camping Fuel & Used Stoves: White gas, propane canisters, and lighter fluid are strictly banned. Stoves must be completely scrubbed clean of fuel residue and odor.

• Local Souvenir Liquids: That jar of local huckleberry jam or craft spirits over 3.4 ounces has to go in a checked bag.

Below, you can find a quick guide to items that are banned at airports in Big Sky Country. For more information, please visit the TSA website.