1)I found cheap Ryanair ticket to Milano. Got it for 38.60 Eur
2)I found Eurolines from Milano to Lyon. Got it for 46.50 Eur
3)I found train ticket from Lyon to Clermont-Ferrand. Got it for 30.20 Eur
Total cost in one direction - 115.30 Eur
This is cheaper and much more fun than flying from Riga to Paris by airBaltic and paying ~180 Euros, and more 75 euros for train from Paris to Clermont-Ferrand...
But now i`ve dillemma about how to come back... have to think about it heavily, and get one important view.
wasn`t so easy with last one...