Upvote:3
In the Spanish web page of Aerolineas Argentinas you have this information:
That means that you can have a conventional bicycle with 1 seat, without motor and a container for the transportation. You would need to remove the pedals, fold the handlebars and deflat the tires.
Also for the special equipment an additional fee applies:
The web does not say anything about how to add it to your ticket, so probably when you do the check-in or at the counter in the airport.
Edited:
In this link you have:
Equipaje adicional (Additional luggage) ยฟCรณmo puedo abonar el servicio? (How can I pay?) You can call to the contact center 0810-222-86527
An in this one you can search the office or the airport and you have a contact phone number.
I have seen that the main phone number is this: