Singapore Airlines (abbreviation: SIA) is the flag carrier airline of Singapore with its hub at Singapore Changi Airport. The airline is notable for using the Singapore Girl as its central figure in corporate branding. It has been ranked as the world's best airline by Skytrax four times and topped Travel & Leisure's best airline rankings for more than 20 years.
Singapore Airlines Group has more than 20 subsidiaries, including many airline-related subsidiaries. SIA Engineering Company handles maintenance, repair, and overhaul (MRO) business across nine countries, with a portfolio of 27 joint ventures, including with Boeing and Rolls-Royce. Singapore Airlines Cargo operates SIA's freighter fleet and manages the cargo-hold capacity in SIA's passenger aircraft. Scoot, a wholly owned subsidiary, operates as a low-cost carrier.
Singapore Airlines was the launch customer for the Airbus A380 — the world's largest passenger aircraft — as well as the Boeing 787-10 and the ultra-long-range version of the Airbus A350-900. It ranks amongst the top 15 carriers worldwide in terms of revenue passenger kilometers, and is ranked tenth in the world for international passengers carried. Singapore Airlines was voted as the Skytrax World's Best Airline Cabin Crew 2019. The airline also won the second and fourth positions as the World's Best Airlines and World's Cleanest Airlines respectively for 2019.