The walkways: the classic glacier viewpoint
The Perito Moreno Glacier, inside Los Glaciares National Park (a UNESCO World Heritage Site), can be admired from a system of wood and metal walkways built facing its ice wall, which rises over 60 meters above the water in places. Covering every level of the walkways takes about two to three hours, with viewpoints at different heights and distances. What most visitors hope to witness are the calving events: blocks of ice, sometimes as large as a building, breaking off the seracs and crashing into Lake Argentino with a roar that reaches you several seconds before you actually see the ice fall. There's no fixed schedule for this; it just takes patience and an ear tuned to the sound.
Mini trekking and Big Ice on the glacier
For those who want to walk directly on the glacier, the company Hielo y Aventura runs two crampon excursions. Mini Trekking lasts roughly one hour on the ice itself (a half day overall including the boat approach) and has no demanding physical requirements, though there's usually a minimum age of 10. Big Ice is a more intense experience, three to four hours walking through crevasses and blue ice tunnels, with a typical minimum age of 15 and a reasonable fitness level required. Both tours need to be booked in advance, especially in January and February, and layered warm clothing is a must even in summer.
Boat Safari and the Glaciarium
The Safari Nautico is a roughly 30 to 40 minute catamaran ride that approaches the glacier's southern face from the water, offering a very different perspective from the walkways, and it's included in most tours from El Calafate. To understand how glaciers form and how climate change is affecting Patagonia, the Glaciarium museum on the outskirts of El Calafate is an interactive stop with an ice bar included in some combo tickets, a great option on a rainy day.
El Calafate: your base for exploring the park
El Calafate is the gateway to the region, with its own airport (FTE) receiving direct flights from Buenos Aires in about three hours, plus seasonal connections from El Chalten and Ushuaia. The town has all the tourist infrastructure you'd need: hotels for every budget, tour agencies and restaurants serving Patagonian lamb. The glacier itself is about 80 kilometers away, roughly an hour by car or tourist shuttle.
Tickets, prices and when to go
Entry to Los Glaciares National Park to see Perito Moreno runs around 25 to 30 USD for foreign visitors, not including mini trekking, Big Ice or boat excursions, which are paid separately. The best time to visit is October through April, with longer days and milder temperatures; in the depths of winter (June to August) the glacier is still accessible and crowds thin out, though some ice excursions may be cancelled due to weather. December and January, at the peak of high season, bring the highest prices, so it's worth booking everything several weeks ahead.
Pairing your trip with El Chalten
El Chalten, Argentina's trekking capital and the base for seeing Mount Fitz Roy, is about three hours away by car or bus from El Calafate. Many travelers combine three or four days in El Calafate for the glacier with another three or four days in El Chalten for hikes such as the one to the Laguna de los Tres viewpoint. Buses between the two towns run several times a day in high season, crossing the Patagonian steppe with views of Lake Argentino along the way. Depending on the season, it's worth booking lodging and excursions in both towns well ahead of time, since the region draws more visitors every year; warm layers, sunscreen and sturdy trekking shoes come in handy no matter when you go, since Patagonian weather can shift quickly even in summer.