it wasn't so much being sent away, but being left in the care of my grandparents in their home country for a month while they went on business trips. Those were some fun times though, spent most of it with my cousins and having fun. I must have been around 5 years old but I do remember missing my mom and dad a lot by the end of the month. Then they'd return and we'd spend another fun month with family or go away to another country for a bit before coming home at the end of summer break.

Not sure if that counts as being sent away. I didn't travel (by plane) on my own until I started going to research conferences during college.