If you are picturing a lounge at Cochrane Airport (LGR), drop that expectation now: this is a small strip serving one of Chilean Patagonia's more remote towns, not a stop built around business travel. Cochrane sits along the Carretera Austral, Chile's famous scenic route through Patagonia, and its airfield is sized for the light regional traffic that route and its surrounding wilderness actually generate, not for a premium waiting experience.
The Carretera Austral's own rhythm explains the airport's traffic pattern better than anything else. Travel through this stretch of Patagonia swells during the southern hemisphere summer, roughly November through March, when road conditions along the Carretera Austral are at their best and trekkers, overlanders, and other visitors move through Cochrane in far greater numbers than during the quieter, harsher winter months. Even at its busiest, though, the traffic here is built around a small airfield rather than anything resembling a lounge-scale operation with amenities to match.
For genuine lounge access connected to a trip through this region, the practical chain runs through Balmaceda and then Santiago. Balmaceda Airport (BBA), serving the Aysen region near Coyhaique, is the closer regional hub, though its own facilities stay modest and focused on connecting traffic rather than a lounge experience. Santiago's Arturo Merino Benitez International Airport (SCL), Chile's main hub, is where real lounge infrastructure exists, including LATAM's own lounges for premium-cabin passengers and elite members, arrangements worth confirming directly since terms can be updated.
Treat Cochrane's airfield as a genuine link for a remote stretch of Patagonia rather than a stop with any lounge to offer. If your Carretera Austral trip connects onward through Balmaceda and Santiago, plan any lounge time around the Santiago end of the journey, and build a little buffer into your Cochrane travel plans during the busy summer trekking season when the whole region fills up.