Most airlines require that your bag be 62 linear inches or less. Therefore, your bag's length, width and height cannot exceed 62 inches. This measurement includes the wheels and the handle of your luggage.
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Conclusion: What's the Largest Luggage Size for Check-In? All checked suitcases need to be below 62 linear inches in size (height + width + depth). If you're looking for a checked suitcase that isn't oversized, look for 24, 25, 26, or 27-inch checked luggage.
Conclusion. So while 29-inch suitcases will be permitted by most airlines depending on their size and weight limits, other carriers may not permit them at all — so always check with your airline before flying to avoid any unnecessary delays or fees at the airport gate.
Most domestic airlines anyway have a linear size limit for checked baggage of 62 inches overall, meaning length+width+height. So one length of 32 inches won't put you over the limit if the width and depth keep you under 62 inches total.
Checked LuggageThe most common maximum size bag allowed is 62 linear (total) inches. A common size bag for checking through is: 27 x 21 x 14. Airline carriers will allow overweight, oversize or additional baggage for additional fees.
Conclusion. So while 29-inch suitcases will be permitted by most airlines depending on their size and weight limits, other carriers may not permit them at all — so always check with your airline before flying to avoid any unnecessary delays or fees at the airport gate.
30-inch luggage is one of the largest options, so it's going to weigh more than a 26-inch one or your carry-on. Most airlines have a maximum weight limit of 50 pounds per checked bag. This limit does not take into account size, so 30-inch luggage needs to meet the same requirements as 26-inch luggage.
A medium checked suitcase (25-27 inches) is more than enough for most people. Usually, medium checked suitcases are 58-61 linear inches in size, which is just below the 62 linear inch size limit, so when you're looking for a checked suitcase, get one in this size.
For example, if your bag measures 24 inches long, 18 inches wide, and 20 inches high, its linear inches would be 62 (24+18+20=62). So, when airlines refer to a 62 linear inch limit, they are saying that the combined length, width, and height of your checked luggage cannot exceed 62 inches.
Southwest Checked Baggage AllowanceAll checked bags must adhere to a max weight of 50 pounds (23 kg) and must adhere to max linear dimensions of 62 inches (158 cm). Southwest is the only airline that provides 2 FREE CHECKED BAGS for all fares.
Large lightweight suitcases (28 -30 inches) usually weigh between 8.5 – 13 pounds (3.9 – 5.9 kg). You can find lightweight suitcases that weigh even less than shown in the above table. You can for example find 30-inch suitcase that weighs only 7.9 pounds (3.6 kilos).
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 example, if your bag is 24 inches tall, 20 inches long and 18 inches wide, its total linear length is 62 inches. Note that using modern spinner bags, which include four wheels on the bottom of your suitcase, means you'll have less space within your actual bag.