Deli meats have varying shelf lives depending on the type of meat, processing methods, and packaging. Unopened packages of vacuum-sealed deli meats typically last for 2-3 weeks in the refrigerator or up to 6 months in the freezer. Once opened, they should be consumed within 3-5 days when refrigerated or 2 months when frozen. Sliced, unpackaged deli meats have a shorter shelf life of 1-2 days in the refrigerator. Vacuum-packed deli meats that have been nitrogen-flushed can extend the shelf life by 1-2 additional weeks in the refrigerator.