Cusco eSIM — plans from ₹299.00

Almost everyone reaches Cusco on a domestic flight into Alejandro Velasco Astete International Airport (CUZ), a short ride from the historic centre and, at around 3,400 metres, an arrival that hits some people hard within the first hour. Others come overland by night bus from Puno or Arequipa. The airport is small, prepaid SIM options there are thin, and standing in a queue while acclimatising is nobody's idea of a good start.

What you need immediately is the hotel address, because Cusco's streets are steep, cobbled, similarly named and mostly closed to vehicles above the Plaza de Armas, so drivers routinely stop several blocks away. Ride-hailing has limited presence here and most transport is arranged by street taxi or through your accommodation, which makes a live map and a working messaging app more useful than an app-based booking.

An eSIM installed before you left home connects the moment your phone registers on a Peruvian network, including on the flight's arrival at Lima. Plans sit on the Peru page.

Claro, Movistar, Entel and Bitel all reach Cusco, and the city itself has good 4G through the centre, San Blas and the surrounding barrios; treat 5G as an occasional extra rather than something to count on at this altitude.

Terrain governs everything here. The Sacred Valley towns of Pisac, Urubamba and Ollantaytambo have workable coverage, but it disappears on the switchback roads between them and on the ruins terraces above. The train down the canyon to Aguas Calientes loses signal for long stretches, and the Machu Picchu site itself is patchy at best. Rainbow Mountain, the Humantay lake trail and the Salkantay and Inca Trail routes should be treated as entirely offline.

Download offline maps for Cusco, the whole Sacred Valley and any trek route before you arrive, and save your entry ticket, train booking and hotel confirmation as offline files. Timed entry to Machu Picchu is enforced, and you cannot rely on pulling up an email at the gate.

Café and hostel Wi-Fi around the Plaza de Armas is common but slow, and it drops when the whole street is uploading photographs in the evening. Hotspot for a laptop works on most plans. A power bank is genuinely important here: cold nights, long trek days and constant camera use flatten batteries fast, and charging points at valley guesthouses are scarce. Lima arrival details are covered on the Lima page.