Sit on the Left side of the plane for the best views on flights from Singapore to Barcelona. The left side wins overall. While the right side has the better Singapore departure view, the left side delivers more across the long flight: the Bay of Bengal coastline over India, the Arabian Peninsula desert terrain, the Red Sea, the Nile Delta over Egypt, the Mediterranean coast, and the superior Barcelona arrival view over the city and Collserola ridge.

During takeoff from Singapore Changi (SIN), sit on the Right side for the best views. Changi typically departs on runway 02C/02L heading north, so the right (east) side gives you a clear view back over the Changi coastline, the southern tip of the Malay Peninsula, and the Riau Islands of Indonesia scattered across the Strait of Malacca. The left side faces inland over Tampines and the urban core. Notable sights include: Changi Beach and coastline, Riau Islands (Batam, Bintan), Strait of Singapore, Johor Bahru across the causeway.

When landing at Barcelona (BCN), sit on the Left side for the best views. Barcelona typically lands on runway 07R/07L approaching from the southwest over the sea, or on 25L/25R from the northeast. On the common 07 approach from the southwest, the left side faces north and gives you the Montjuic hill, the Gothic Quarter, and the Sagrada Familia visible in the urban grid, plus the Collserola ridge behind the city. The right side faces the Mediterranean. Notable sights include: Montjuic hill, Collserola ridge (Serra de Collserola), Barcelona urban grid with Eixample district, Port of Barcelona.

The flight from Singapore Changi (SIN) to Barcelona (BCN) takes Approximately 13 to 14 hours depending on routing and winds.

The route typically tracks northwest over the Bay of Bengal, crosses the Indian subcontinent over Chennai and Mumbai, transits the Arabian Sea, crosses the Arabian Peninsula over Saudi Arabia or the UAE, overflies the Red Sea, crosses Egypt with the Nile Delta visible, then tracks across the central Mediterranean past Sardinia or Corsica before descending into Barcelona. The Himalayas are too far north to be visible on this routing.