Argentina is a huge country and one of the difficulties is getting around. Flight schedules and services are comprehensive but most route via Buenos Aires, this can make for a long trip.

An alternative is the bus services, which offer airline style seating and even more comprehensive services, both national and international.

On-line reservations and booking, some operators here:

Omni Lineas

Via Baroloche

Andes Mar

For more on Argentina see the pages for Buenos Aires and Iguazu.