I do not remember the first time. I was less than one year old. I am told that it was on a DC3 flown by Piedmont.
I was seven for the first flight that I remember. I traveled with my grandmother from Asheville to Idaho Falls. The routing was:
AVL - ATL - ORD - MSP - DEN - SLC - IDA
I remember flying on United and Western. I collected a bunch of "flight wings" from the pilots after my tours of the cockpits.
The return was
IDA - SLC - DEN - ORD - BNA - AVL