Iguazú Falls from Buenos Aires: days, both sides and costs

The flight from Buenos Aires to Puerto Iguazú takes about two hours. Seeing the falls still calls for more than a flying visit: Argentina's walkways fill a day, and Brazil's panorama is best given a separate one. Three nights cover an arrival, one day in each park and a departure. Since 1 June 2026, a foreign adult pays ARS 60,000 for Argentina's park; Brazil's park sets its own ticket price. Check GOV.UK's Brazil entry requirements before you travel; the page sets out whether British passport holders need a visa for tourism.

Which side, and how long?

On the Argentine side, the Upper and Lower Circuits bring visitors above and beside individual cascades, while the Devil's Throat walkway leads to the most forceful viewpoint. Across the gorge, the Brazilian trail shows the whole wall of water. With only one park day, Argentina offers the longer encounter with the falls; the two tickets are separate and the views reward a second day if time allows.

The Argentine train, walkways and queues make it a full-day visit. Brazil's trail and park bus take roughly three to four hours, with border time added to that. Floodwater and repairs can close a walkway, so a spare day is particularly useful in wetter periods. Arrival day is travel time rather than a reliable park day.

Arriving and choosing where to stay

Aerolíneas Argentinas, Flybondi and JetSMART operate the Buenos Aires Aeroparque (AEP) to Puerto Iguazú (IGR) route. IGR is distinct from Foz do Iguaçu airport (IGU) in Brazil. The flight is about two hours; an overnight coach takes most of a night and consumes much of a short break. An early flight in and a later return flight leave the two park days intact.

Puerto Iguazú airport is outside town, around 25–40 minutes from accommodation by booked transfer or taxi. Río Uruguay buses and taxis connect town with the Argentine park gate; a taxi can make an early start easier in the heat. Town is the simplest base for the Argentine day, with independent places to eat and transport choices. Hotel Saint George is central, while Loi Suites Iguazú and Mercure Iguazú Iru are more secluded, with pools and longer transfers. Meliá Iguazú is inside the Argentine park, on the site of the former Sheraton, shortening the journey to the trails at a much higher room rate. Foz do Iguaçu suits flights through IGU or a Brazil-focused trip, but puts a border crossing before an Argentine park visit.

Spend the full day in Argentina

The Argentine park's official ticket channel is useful before July and December–February school holidays. From 1 June 2026, the general tariff is ARS 60,000 for foreign adults. The official page exempts children aged 0 to 6 inclusive; check the applicable age category for any older child rather than assuming the adult tariff. Argentine residents pay ARS 25,000, Misiones residents ARS 8,000 and students ARS 15,000, with an Argentine DNI and student documentation; children aged 0 to 6 inclusive and retirees or pensioners with an Argentine DNI are exempt. Discounted categories require the relevant document, such as an Argentine DNI for retirees and students; check the tariff page.

The park's tariff page advertises a discount for a second day of visit; check its conditions. For a one-day visit, the Devil's Throat is a good first major stop: the Tren Ecológico and raised walkway take about 90 minutes to two hours with queues, ending at a loud, wet and exposed platform. The Circuito Superior (Upper Circuit) is about 1.7 km of elevated paths and takes 75–90 minutes. The Circuito Inferior (Lower Circuit) runs about 1.4 km with steps into the gorge, taking roughly 90 minutes; a buggy cannot complete it, so families can use a carrier or split up.

The walkways bring spray and sun in the same day, making water, a hat, high-factor sunscreen, a rain layer and grippy shoes useful. Time for lunch, wildlife stops and the last bus or a pre-booked taxi belongs in the plan. Coatis forage around visitors: zipped-away food and a closed bag protect both lunch and loose belongings, and the animals should never be fed.

Crossing into Brazil for the panorama

Check GOV.UK's Brazil entry requirements for the current rules on tourist stays. Check the border requirements for each traveller before the crossing. Carry any Argentine residence evidence you hold for your return, and keep originals dry in a waterproof pouch. Check the requirements for children who travel without both parents.

Parque das Aves by the Brazilian entrance has a separate ticket and takes roughly another 90 minutes. Reais or a card are the practical ways to pay at the Brazilian park, rather than relying on Argentine pesos.

A cross-border bus or driver needs to allow for immigration checks in both directions. A quiet crossing may take tens of minutes and a holiday queue much longer; for a hired driver, return travel and waiting time belong in the quote. A rental car requires the hire company's permission and insurance for Brazil. This is why a Brazilian morning followed by a tight flight from IGR makes an uncomfortable pairing.

Boats, children and the season

Gran Aventura, run by Iguazú Jungle on the Argentine side, combines a jungle vehicle track with a fast boat close to the falls. It soaks passengers. Macuco Safari is a separate Brazilian operator rather than an alternative for a child too young for Gran Aventura. A dry bag with a full change of clothes is more useful than taking valuables aboard.

April–June and September–October offer a balance of temperatures and crowds. December–February is hot and humid, with school holidays adding demand. High water can make the falls especially dramatic while closing a walkway or boat operation, another reason to keep the Brazilian day movable. Mosquito repellent and UK travel-health guidance for Misiones and the Brazilian places on the itinerary belong alongside the tickets. With a baby, the Upper Circuit and a slower Devil's Throat visit are more manageable; a carrier helps at steps, and the Lower Circuit is easiest to drop for anyone who struggles with them.

What to budget for

Park tickets are the part of this budget you can check in advance, from the Argentine tariff page and the Brazilian park's own site listed below. Flights, hotels and meals vary with dates, so price them for your own travel dates.

The three-night choice is about the second perspective as much as the second park ticket: Argentina puts the falls close enough to feel their spray, while Brazil lets you see their full span.