You can book in advance for your BUSKI journey between Aigle station and the Portes du Soleil skiing area, either one way (up or down) or a return journey :

 

Up: Aigle station - Portes du Soleil (goes as far as Abondance)
Down: Portes du Soleil - Aigle station
Return: Aigle station - Portes du Soleil - Aigle station