I see I am allowed to carry on as an extra item my walking cane.
Is there any charge for bringing a cane to my seat?
Do I need a doctor statement to carry on a cane?
What length of walking cane can I bring onboard to my seat?
I got my info below, from the Delta site, but not specifics=
"Canes and Crutches
Crutches must be stored lengthwise against the fuselage wall at a window seat except at emergency exits. Walking canes or the cane of a visually impaired person should be stowed in one of the following locations:
An approved stowage compartment
On the floor secured between a non-emergency-exit window seat and the wall of the aircraft
Beneath any two non-emergency-exit window seats if the cane is flat on the floor or under a series of passenger seats in the same row of the aircraft as long as the cane does not protrude into the aisle "