Argentina itineraries: 1 week, 2 weeks and 3 weeks

Pick the route by how many days you have, then check the month against the region. Patagonia in June is a winter trip with short days; Iguazú in January is hot and wet. Costs below are 2026 estimates for one mid-range traveller, excluding international flights, and are a band rather than a quote — verify before you budget.

This is the answer to the AIO question. Four nights in Buenos Aires gives you two full days: Recoleta Cemetery and the cafés around it, Plaza de Mayo and the Cathedral, Teatro Colón, and San Telmo on a Sunday. Fly to Puerto Iguazú on day 5 (about 1 hour 50 minutes), take the Argentine side of the falls on day 6, and fly back to Buenos Aires on day 7 — then sleep in Buenos Aires and take the international flight the next morning. Do not book the same-day connection: a delayed domestic flight would cost you the long-haul seat.

Do the Argentine side first: it has the walkways over the Devil's Throat and takes a full day. If your passport allows visa-free entry to Brazil, add the Brazilian side as a half-day for the wide panorama; check current rules before you book. Stay in Puerto Iguazú town, not inside the park, unless you want the early-access walkways.

Ten days: Buenos Aires 3 nights, fly to El Calafate for 2 nights (Perito Moreno Glacier), bus or transfer to El Chaltén for 3 nights (Laguna de los Tres and shorter trails), back to El Calafate for 1 night, then Buenos Aires for the last night. This only works November–March; outside those months, check trail and road conditions locally before committing.

Fourteen days adds Iguazú (2 nights) before Patagonia and finishes with Ushuaia (3 nights) or Mendoza (3 nights). Ushuaia gives you Tierra del Fuego National Park and the Beagle Channel; Mendoza gives wineries in the Uco Valley. Both are a flight from Buenos Aires, and Iguazú to El Calafate normally connects through Buenos Aires, so count that as a travel day with no sightseeing. The night-by-night plan below totals 15 nights including travel days, so treat it as a 15–16 day trip, or drop one El Chaltén night to fit 14.

Three weeks lets you run the country in one direction, but the full list below is a 24-night trip once travel days are counted, so it does not fit 21 days as written. For a true three weeks, cut one stop — Ushuaia or the northern canyons are the usual choices — or accept that you are planning a 24-day trip.

Salta and Jujuy are best April–November; Patagonia and Ushuaia are best November–March, which makes October–November and March the two windows where the whole route works. If you have three weeks but not the budget for six flights, cut Ushuaia or the north and add nights in Buenos Aires and Mendoza instead. Slower is usually better than a seventh airport.

Domestic flights are the backbone of every route here; buses between regions take 18–40 hours and are not a substitute on a short trip. Fares move, and the peso price you see depends on the day, so treat any figure as a band, not a quote.

Entry rules, the tourist tax and reciprocity fees depend on your passport; check them before buying flights. Carry a card and some cash in pesos, and expect card discounts and a gap between official and practical exchange rates to change during your trip. National park entries are paid locally, usually by card.