Buenos Aires to Calafate by bus

If you use Blue dollars and buy it in Buenos Aires, it will be less expensive.

Thats certainly true, but you also risk not having any seats on the plane if you leave it til you arrive.

Bariloche might not be on the way - its a bit out of the way. But there isn't a great deal between BA and El Calafate in terms of places one could theoretically stop.

But a flight is the best option. To be honest, Ushuaia doesn't offer much - there are some good day hikes. But your not gonna get the same scenery as in Los Glaciares N.P.

Ok. Thanks for the heads up. Also, they talked to me about a boat ride to Uruguay? That takes about 3 hours? Any info on that?

There are two ferries to Uruguay:
1) Colonia del Sacramento.
2) Montevideo.

Colonia can be done as a day trip from BA. Montevideo is a longer ride. Prices for the ferry are fairly expensive. Check out Buqebus for timetables/prices....

Already checked and its not bad at all. A ferry/bus + hotel combo for 2 nights its 306 double occupancy, so divided by two it works out pretty well!