But here's the thing: different airlines have different size restrictions, so it's always a good idea to check with your airline before you start packing. Some airlines are more generous than others, while some are super strict - so don't get caught out! Delta Air Lines, for example, allows bags up to 80 inches in size, while Spirit Airlines is more restrictive, with a maximum size of 40 inches.
And then there's the type of luggage you're using - some bags are designed to be more compact, while others are just plain huge! Hardshell luggage tends to be more restrictive in terms of size, while softshell luggage can be squeezed into smaller spaces. It's all about packing smart, folks!
