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.
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Most bags that fit under 20kg suitcase category are large or XXL suitcases that are suitable for checked in travel on airlines. In general a 20kg suitcase has the following dimensions:Length: 69-81 cm (27-32 inches)
Checked bags that exceed 62 (157.48 cm) in overall dimensions (length + width + height) or exceed 50 pounds (22.68 kg) will incur additional fees. Maximum weight is 50 pounds and maximum size is 62 inches (length + width + height) per checked piece of luggage.
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.
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.
28 - 32 SuitcaseThese are very large suitcases meant for trips exceeding a week. They have a tremendous capacity for anything you would like to travel with. Due to their large size, when fully packed they can be difficult to maneuver and may exceed the 50 lbs. weight restrictions that most U.S. airlines enforce.
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.
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.
How big is a large suitcase? Large suitcases are 70 to 79 cm or 27 to 31 inches in height. They have a capacity of 55 L up to 140 L. Just imagine how many clothes and shoes you could fit in these suitcases!
Size Limits For Checked LuggageGenerally, a luggage piece must not exceed 62 linear inches. Size allowance plays a crucial role in determining whether or not your baggage makes it onto the aircraft.
Small checked suitcases usually are 23-24 inches on the longest size, medium ones 25-27 inches, and large ones in 28-32 inches. Quite often, suitcases above 30 inches will actually be oversized, because they're over 62 linear inches with wheels and handles included.
As a general rule, opt for a carryon no larger than 45” (length + width + height) and a checked bag no larger than 62”, which is standard for most US airlines.
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.
Airlines publish the maximum dimensions allowed for carry-on bags. For example, American Airlines states that a carry-on bag's dimensions cannot exceed 22 by 14 by 9 inches, including handles and wheels. The carry-on must also fit into the sizer at the airport; if it doesn't, you'll be required to check it.
50-75 liters: For a trip that lasts one to two weeks, many people jump up to a bag in this range. 75 liters-100+ liters: For big expeditions, travelers typically need several large bags that can hold 75 liters or more each.
It's always important to check with your airline regarding their size and weight restrictions for carry-on luggage. While a 28-inch hardside luggage may fit in some overhead bins, it may only work in some areas due to varying size restrictions.