With a 5-hour layover at Singapore’s Changi Airport in 2026, you have just enough time to experience its world-famous "Jewel" complex and at least one terminal attraction. You should start by visiting the HSBC Rain Vortex, the world’s tallest indoor waterfall, located at the heart of the Jewel. Afterward, head to Canopy Park on the top floor to enjoy the hedge mazes and bouncing nets. If you prefer to stay airside (inside security), you can visit the Butterfly Garden in Terminal 3 or catch a free movie at one of the 24-hour cinemas in Terminals 2 and 3. For those looking to freshen up, the rooftop swimming pool and jacuzzi at the Aerotel in Terminal 1 offer a unique way to relax between flights. Five hours is generally considered the "sweet spot" for Changi; it’s enough time to explore without feeling rushed, but not quite long enough to comfortably clear immigration for a city tour, which typically requires a 6-to-8-hour window.