The luggage or other container in which a handgun is transported must be locked. Other firearms must be encased in a container manufactured for the transportation of firearms and of sufficient strength to withstand normal handling and prevent damage to the weapon during transport. If no suitable container is available, Southwest has heavy cardboard rifle and shotgun transporter boxes for sale. Southwest assumes no liability for the misalignment of sights on firearms. 150 rounds Ammunition must be contained in the manufacturer's original container or an equivalent that is sturdy and durable and provides for sufficient cartridge separation.
Southwest prohibits ammunition from being carried, in any amount, in the aircraft cabin.
Never leave your luggage unattended. If you must leave the area where you have placed it, even for a moment, take your luggage with you. When boarding the aircraft, any carryon item with hard edges or inflexible surfaces should be placed under your seat or on the floor of the overhead bin. Don't place it on top of other items in the overhead bin. Luggage shifts about within the bin, and it could fall out and injure someone when the bin door is opened.