It is important to know in which terminal you go for the recording of your flight. This information is written on your tickets and will be used to organize your trips within the Paris Charles - de - Gaulle airport.
It is advisable to arrive several hours in advance to check baggage, security checks ...
Allow 3 hours in advance for long-haul flights, and 1:30 for domestic flights. The registration deadline (HLE) depends on your company and is indicated on your flight ticket.