Is business class on domestic flights within Argentina worth it?

No. Domestic flights in Argentina are short (usually 2-3 hours) and operated by Aerolineas Argentinas, where 'Club Economy' offers little benefit over standard economy.

Which airlines offer the best lie-flat seats to Buenos Aires?

American Airlines and Delta offer consistent lie-flat products on their daily flights from Miami and Atlanta/New York respectively.

Booking Business Class Flights to Buenos Aires

Use flight alert services like Point.me or ExpertFlyer to track award seat availability 11 months in advance. If paying cash, book at least 4 months out and prioritize direct flights on LATAM or American Airlines to minimize connection fatigue.

Set up price and availability alerts. Create accounts on Google Flights for cash fares and Point.me for award availability. Set alerts specifically for your departure airport to EZE (Ministro Pistarini International Airport) for your desired travel month.
Leverage airline alliances. If you have airline miles, check partners. If you have American Airlines miles, check availability on LATAM. If you have United miles, look for Star Alliance partners like Avianca or Copa, though be mindful that regional business class seats on these carriers are often just economy seats with a blocked middle.
Check routing through secondary hubs. Flying direct is expensive. If you are open to a stopover, search for flights through Santiago (SCL), Bogota (BOG), or Lima (LIM). You can often save $1,500+ by adding a 3-hour layover.
Audit the aircraft seat map. Before booking, plug your flight number into SeatGuru or AeroLOPA to ensure the 'Business Class' isn't actually a premium economy configuration. Some older narrow-body planes operating flights into South America do not offer lie-flat seats.

Is business class on domestic flights within Argentina worth it?: No. Domestic flights in Argentina are short (usually 2-3 hours) and operated by Aerolineas Argentinas, where 'Club Economy' offers little benefit over standard economy.
Which airlines offer the best lie-flat seats to Buenos Aires?: American Airlines and Delta offer consistent lie-flat products on their daily flights from Miami and Atlanta/New York respectively.