When making the APTL, do you have to know, like 100 ICAO-Codes for different airports?

Question

I mean, do you have to learn, while you are making the ATPL, all these codes, or do you learn them just after making the ATPL and actually flying at an airline?

Answer 1

No.

Answer 2

A simple answer to your question is, No

Answer 3

After  forty years I know hundreds. Not necessary but it is nice to not have to look it up for a quick plan.

Answer 4

Not really..it would be nice but it not required unless your a Check-in agent or something.

Even when I file a flight plan, they ask me for the code....

That is the 'Flight Plan' control center  ....strange...is it?