Checked Luggage Sizes and Restrictions For most airlines, the largest luggage size for check-in is 62 linear inches. This means the total length + width + depth must equal 62 inches or less. RELATED: Our luggage size guide takes the guesswork out of measuring your bags before you get on the plane.

In the world of travel and aviation, "62" refers to the standard maximum size limit for checked luggage on most major airlines, measured in linear inches. This number is calculated by adding the total length, width, and depth of the suitcase together (L+W+H=62 inches). As of 2026, this limit remains the industry benchmark for carriers like American, Delta, United, and many international airlines. If a bag exceeds 62 linear inches, it is classified as "oversized," which usually triggers a significant additional fee, often ranging from $100 to $200 per flight. A typical "large" checked suitcase (roughly 29-30 inches tall) is specifically designed to sit just under this 62-inch threshold to ensure travelers can maximize their packing space without incurring these penalties. When shopping for luggage, it is vital to measure the wheels and handles as well, as airlines include these projections in their final calculation. Staying within this magic number helps ensure a smoother check-in process and avoids the unexpected costs associated with transporting bulky or irregularly shaped sporting equipment and extra-large trunks.