If you are travelling throughout Argentina, and woud like to come in Bariloche on a direct ride, there are some interesting transportation options you can use. Here you are some:

Buenos Aires to Bariloche: Companies: Via Bariloche, Crucero del Norte, Nueva Chevallier, El Valle, Via Tac, El Rapido Argentino, Andesmar. The ride takes: 18 hs aprox. The cost is around: $110us

Mendoza to Bariloche: Companies: Andesmar and TRAMAT. The ride takes: 19 hs aprox. The cost is around: $150us

Cordoba to Bariloche: Companies:  Via Tac, T.U.S, Chevallier. The ride takes: 9 hs aprox. The cost is around: $125us