The TSA firearm declaration form is a short tag or card you sign at the airline’s full-service check-in counter, certifying that the firearm in your checked bag is unloaded and packed according to federal rules. The airline gives you the form when you tell the agent you are checking a gun; you fill it in, sign it, and place it with the locked hard-sided case before the bag leaves your hands. The whole exchange takes a few minutes when you arrive prepared. Getting a detail wrong, or skipping the declaration entirely, can trigger civil fines that start at $850 and climb to $17,062, plus a possible criminal referral.1
Before You Get to the Counter
The form asks you to certify specific facts about how the firearm is packed. If those facts are not true when you sign, the bag will not clear screening and you will not make your flight. Handle the packing at home, not in the terminal.
The firearm must be completely unloaded and placed inside a hard-sided container that fully prevents access to the weapon. Hard-sided means the case resists prying and impact; if an agent can pop it open with light force, it fails the standard. Lock the case with any padlock, combination lock, or keyed lock you choose. TSA-recognized locks with a master key are allowed, but many travelers prefer a non-TSA lock so no one else can open the case in transit. You keep the key or combination unless a TSA officer specifically asks for it during screening.
Ammunition has its own packaging rule. It must sit in its original manufacturer’s box or in another container designed for small quantities of ammunition, such as a fiber, wood, or metal box. Loose rounds in a suitcase pocket are not allowed. Loaded or empty magazines and clips have to be boxed too. You may put the ammunition inside the same locked case as the firearm as long as it stays in its own secure packaging. Small-arms ammunition up to .75 caliber and shotgun shells of any gauge are permitted; incendiary and explosive rounds are not. Airlines add their own weight limits. American Airlines caps ammunition at 11 pounds (5 kg) per passenger, which is a common ceiling. Check your carrier’s baggage page before you pack.
What Counts as a Firearm
TSA treats any device capable of firing a projectile as a firearm for declaration purposes. That covers handguns, rifles, and shotguns, and also less obvious items like starter pistols and flare guns, which have to be unloaded, locked in a hard-sided case, and declared at check-in just like a conventional handgun. Replica and airsoft guns that cannot fire live ammunition are not technically firearms under TSA’s rules and do not require a hard-sided container, but if a screener thinks a replica is real, it gets handled as a firearm until law enforcement clears it. Locking a realistic replica in a hard case and declaring it voluntarily avoids that delay. Replica and inert explosives are banned from carry-on and checked bags entirely.
Where and How to Declare
Take the locked case directly to the full-service airline counter inside the terminal. You cannot declare a firearm at curbside check-in, at a self-service kiosk, or at a bag drop. Tell the agent you are checking a firearm. The agent hands you the declaration form.
What the Form Asks You to Sign
The declaration is a short document. It asks you to confirm in writing that the firearm is unloaded and properly packed. Typical fields include your name, address, flight number, departure and arrival airports, the date, and your signature. Some carriers also ask you to certify that the ammunition is stored separately from the firearm and that you hold any required permits. The wording varies slightly between airlines, but the core purpose is the same across the industry: a signed, written confirmation that the weapon is unloaded and secured.
Once you sign, the tag goes with the case. For a pistol in a small hard-sided case packed inside a larger checked bag, the airline places the declaration form on top of or next to the pistol case. For a long gun in its own full-size case, the tag goes inside the case with the firearm. The agent then routes the bag to TSA screening.
What Happens After You Sign
TSA screens the bag as part of its standard checked-baggage process after the airline accepts it. An officer may need to open the case for a physical inspection, and if that happens you must be nearby to provide the key or combination. Some airports handle this at a secondary screening station right behind the ticket counter; others page passengers over the intercom. Stay in the check-in area until the airline confirms your bag has cleared screening. Walking away too early is the most common reason people traveling with firearms miss their flights.
If the case, the ammunition packaging, or the declaration is out of order, the officer flags the bag and the airline pulls it. You will need to fix the problem on the spot or surrender the item. A spare lock and an extra manufacturer’s ammo box in your carry-on can rescue the trip if something is off.
At your destination, do not expect the case to appear on the general carousel. Airlines often route firearm bags to an oversized-baggage area or a staffed baggage office where you show identification and your claim check to pick it up. Ask the agent at check-in where to collect the bag when you land. If the case is lost or delayed, airlines generally will not deliver it to an off-airport address; you have to return to the airport in person.
What It Costs if You Skip or Botch the Declaration
TSA’s civil penalties depend on where the violation is discovered and whether the firearm is loaded. In 2024, TSA detected 6,678 firearms at passenger checkpoints nationwide, so bringing one to the checkpoint instead of declaring it at the counter is the scenario screeners are trained to catch.
A loaded firearm, or an unloaded firearm with accessible ammunition, found at a checkpoint draws a civil penalty of $3,000 to $12,210 plus a criminal referral to local law enforcement. Repeat violations run $12,210 to $17,062. An unloaded firearm with no accessible ammunition found at a checkpoint carries $1,500 to $6,130 plus a criminal referral. TSA also suspends PreCheck eligibility; a first offense can cost expedited screening for up to five years, and egregious or repeat violations can bring a permanent ban.
In checked baggage, an undeclared loaded firearm carries $1,700 to $3,410 plus a criminal referral. An undeclared unloaded firearm in checked baggage draws a written warning on a first offense, then $850 to $1,700 for subsequent violations.
Federal criminal law is separate from the TSA civil scheme. Placing a loaded firearm on an aircraft in checked baggage, or carrying a concealed dangerous weapon while boarding, is a federal crime punishable by a fine and up to 10 years in prison. If the conduct shows willful disregard for human life, the maximum doubles to 20 years, and if someone dies, the maximum is life.
Situations the Declaration Form Alone Does Not Cover
International flights need more than the airline declaration. Depending on the firearm and destination, you may need an export license from the Directorate of Defense Trade Controls or the Bureau of Industry and Security, an electronic filing through the Automated Export System, and a CBP Form 4457 registration so U.S. Customs will let the firearm back in duty-free. Form 4457 does not exempt you from the import laws of the country you are visiting; contact each destination’s embassy or consulate before you fly.
Sworn law enforcement officers who need to carry a firearm in the cabin follow a separate authorization process built around the TSA Law Enforcement Officer Flying Armed Training Course, not the checked-baggage declaration form. Officers who do not qualify to fly armed check their firearms using the same declaration process as any other passenger.