Singapore Airlines is the flag carrier of Singapore. Singapore Airlines operates a hub at Changi Airport and has a strong presence in the Southeast Asia, East Asia, South Asia, and "Kangaroo Route" markets. The company also operates trans-Pacific flights, including the world's two longest non-stop commercial flights from Singapore to Newark and Los Angeles on the Airbus A340-500.

Singapore Airlines was the launch customer of the "superjumbo" Airbus A380.

Singapore Airlines flies to 61 destinations in 35 countries on five continents from its primary hub in Singapore. It has a strong presence in the Southeast Asian region, which together with its subsidiary SilkAir, connects Singapore with more international destinations in the region than any other Southeast Asian airline.

Singapore Airlines operates a wide-body aircraft fleet from five aircraft families: Airbus A330, Airbus A340, Airbus A380, Boeing 747 and Boeing 777. In keeping with its policy of maintaining a young fleet, which stands at an average of 6 years 7 months as at 24 January 2010, it renews its fleet frequently.

Singapore Airlines offers World Gourmet Cuisine in all three classes. Regional dishes are often served on their respective flights, such as the Kyo-Kaiseki, Shi Quan Shi Mei, and Shahi Thali meals available for first class passengers on flights to Japan, China and India, respectively.

SIA has also introduced a Popular Local Fare culinary programme offering local favourites to passengers in all classes flying from selected major destinations.

Business and first class passengers may also choose to use the "Book the Cook" service on some flights, where specific dishes may be selected in advance from a more extensive menu.