Good thinking, Blue.
In the U.S., each state has its own laws re: unlabeled/labeled meds.
My home state just enacted a new law, allowing for up to 11 days worth of unlabeled meds on your person without penalty. In some cases, that could be a lot of meds!
Check state laws unless flying.
When I was using domestic airlines, I had all meds in their labeled bottles and in my carry-on. My meds were not checked even once in two round-trip flights, coast to coast.
I have too many prns to use packaging.
I think pill packs are a great idea for ppl with stable med regimens.

WC