1

With the bus journeys being LOOONGGG. Flights will help you achieve this. Otherwise you'll only get to BA - Iguazu and then onto Rio probably.

2

At least take a flight from Ushuaia to BA. The bus won´t be really cheaper

3

And will make the journey much easier to complete in two weeks. You probably need 4-5 days in BA, and 2 full days in Puerto Iguazu for the falls (both sides). So that gives you probably a week to get to RIo - head to Paraty and Ilha Grande for that. Both close to Rio.

4

You'd have to have a really, really good reason not to fly. Busing won't save you money, and it'll sure subject you to some boring landscapes. As suggested above, fly at least as far as B.A.

On the other hand, if determined it is absolutely physically possible to bus from Ushuaia to Rio in two weeks, even including a stopover at the falls. You merely have to eliminate all extraneous activities and interests from your trip: no beaches, no colonial towns in the mountains, no activities or eating or socializing or sleeping late and eating breakfast in bed. Sound like fun? Ok: you know what to do.

The above includes some mild exaggeration for effect, but not much. Hope that's helpful.

Mark

5

Agree with all of the above. Fly to BA (its a domestic flight, so won't cost the earth) and then take it from there.

You still may find that flights between the other locations are almost the same price as buses - research it carefully :-)

6

Flights from iguazu to rio will almost certainly be cheaper than the bus.

7

Thanks all, and agreed, flight to BA seems sensible