If you are travelling to Paris from another part of France or from Brussels your round-trip journey will be made by train:
Departure: You will arrive by train at the Paris airport, Roissy Charles de Gaulle (CDG), and from from there you will take a plane from one of the Paris airports (please note your flight may be from this same airport, CDG, or a different airport in the Paris area).
Return-trip: You will arrive by plane at one of the Paris airports and from there transfer to Paris Charles de Gaulle to catch your train.
How to obtain your train ticket? :
You will have to go in person to the TGV AIR or Thalys check-in counter for Brussels from between 24 hours to 30 minutes before the departure of your train. You must present your plane ticket and ID card to obtain your train ticket.
When should I check-in my luggage?
You keep your luggage with you on the train and check your luggage at the airline check-in counter before boarding.
For your return trip, you will collect your luggage upon disembarking the plane so that you can take it with you on the train. For more information, please click here to access the Air France page