How do airline pilots know the route they need to follow on a flight?

Question

How do airline pilots know the route they need to follow on a flight?

In: Engineering

Answer 1

There are “roadsigns” in the sky and published maps and routes that pilots follow. When the pilot files his flight plan with air traffic control, he let’s them know the route(s) they want to follow. ATC tries to give it to them, but sometimes things like weather or congestion cause changes to be made.