Checked Luggage There is normally a maximum weight limit of 50 pounds per checked bag as well as a size restriction. The most common maximum size bag allowed is 62 linear (total) inches. A common size bag for checking through is: 27 x 21 x 14.

When checking a cardboard box as luggage in 2026, most major airlines follow the standard "linear inch" rule applied to suitcases. The sum of the box's length, width, and height must typically not exceed 62 linear inches (158 cm). If the box is larger than this, it may be subject to "oversized baggage" fees, which can range from $100 to $200 per flight. The standard weight limit for a checked box is usually 50 lbs (23 kg) for Economy class. It is essential that the box is sturdy, double-walled, and securely taped on all seams; many airlines also require that the box contain no original hazardous material markings (like a bleach or chemical box). Additionally, some carriers might refuse to accept a box if it isn't properly packed or if it contains fragile items that aren't sufficiently protected. Always check with your specific airline, as some budget carriers have smaller "max dimensions" for non-standard luggage items.