Checked Luggage Most airlines will allow you to check one bag and have one carry-on bag. 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".

For most major international and domestic airlines, the standard maximum size for a checked bag is a total linear dimension of 62 inches (158 cm). This is calculated by adding the length, width, and height of the suitcase together (L + W + H). If your bag exceeds this limit, it is classified as "oversized," and you will typically be hit with a heavy fee that can range from $100 to $200 per flight. In terms of weight, the standard limit for Economy passengers is usually 50 lbs (23 kg), while Business and First Class passengers often enjoy a higher limit of 70 lbs (32 kg). It is important to note that most airlines have an absolute hard limit of 100 lbs (45 kg) for safety reasons; bags heavier than this will generally not be accepted even for a fee. Always check your specific carrier's website, as budget airlines may have slightly smaller size constraints or lower weight caps (like 40 lbs) to encourage you to pay for "extra" weight during the booking process.