A personal item is any type of luggage that fits underneath the plane seat in front of you. Most domestic airlines in the United States require a personal item to be 18” x 14” x 8” or smaller in size. Personal items can include a purse, briefcase, small backpack, laptop bag, weekender or small duffel bag.

A personal item is a small piece of luggage that must be able to fit entirely underneath the seat in front of you on an aircraft. In 2026, standard airline policy generally distinguishes this from a carry-on bag, which goes in the overhead bin. Common examples include a medium-sized backpack, a laptop bag, a large purse, or a briefcase. While exact dimensions vary by carrier, most major airlines like Delta or United stick to a maximum size of approximately 18 x 14 x 8 inches. The "pro" advantage of a personal item is that it typically remains free even on "Basic Economy" tickets where overhead bin access is restricted or charged. Because it stays within your reach throughout the flight, it is the best place to store "mission-critical" items such as medications, passports, charging cables, and headphones. Always ensure your bag isn't overstuffed; if it protrudes into the footwell or aisle, flight attendants may require you to check it, which could result in unexpected fees at the gate.