Sit on the Right side of the plane for the best views on flights from Madrid to San Juan. While takeoff offers Sierra de Guadarrama views on the left, the landing approach over the Atlantic shelf and Puerto Rico's northern coast from the right provides more dramatic and sustained visual interest—the color-graded ocean waters and tropical coastline are more distinctive than Madrid's departure terrain.

During takeoff from Barajas (MAD), sit on the Left side for the best views. Madrid-Barajas typically departs runways 32L/R (northwest heading). Left seats face toward the Sierra de Guadarrama mountain range and the northern Madrid metropolitan sprawl, offering immediate terrain contrast. Right seats see the flat southern plains with less visual interest during climb-out. Notable sights include: Sierra de Guadarrama (snow-capped in winter, visible 30+ miles north), Madrid city grid and Retiro Park district, Tagus River valley, Toledo hilltop city (visible on clear days, ~40 miles south).

When landing at Luis Munoz Marin International (SJU), sit on the Right side for the best views. SJU approaches from the north over the Atlantic, typically landing runways 10L/R (northeast heading). Right seats face the northern Puerto Rico coastline, the turquoise waters of the Atlantic shelf, and the approach over Bahía de San Juan. Left seats see inland terrain with less dramatic water features. Notable sights include: Atlantic Ocean and continental shelf color gradient (deep blue to turquoise), Bahía de San Juan (San Juan Bay), El Yunque National Forest (visible as dark green forested ridge to the southeast), Puerto Rico's northern coastal plain with San Juan metropolitan area.

The flight from Barajas (MAD) to Luis Munoz Marin International (SJU) takes Approximately 9 hours 15 minutes.

The flight crosses the Iberian Peninsula (central plateau visible during early climb), then the Atlantic Ocean for 7+ hours. Notable midpoint geography includes the Azores archipelago (visible only if passing nearby, typically 800+ miles west of Iberia), and the gradual transition from temperate Atlantic waters to subtropical waters as the aircraft approaches the Caribbean. The Mid-Atlantic Ridge and deep ocean basin dominate the 5,000+ mile oceanic crossing; no significant land features are visible for the majority of the transatlantic segment.