Originally Posted by RobertS975
I have also seen plenty of folks with guitar cases aboard DL flights. Even out of the UK, with its formerly strict size limits, you are now allowed to take musical instruments.
But, from delta.com:
"Carry-on Baggage
Small instruments, such as violins, will be accepted as your free carry-on baggage item if it will fit easily within our SizeWiseŽ unit (approximately 22"x14"x9"). Most standard sized guitars are longer than the 22" maximum and cannot be accepted as carry-on baggage."