This report provides a comprehensive external environment analysis of Singapore Airlines (SIA). It begins with a background of the company and its business operations, highlighting its history, mission, and fleet. The core of the report focuses on the external environment analysis, utilizing PESTLE and Porter's Five Forces frameworks to assess the political, economic, social, technological, legal, and environmental factors impacting SIA. The PESTLE analysis examines government policies, economic growth, social trends, and technological advancements, while Porter's Five Forces evaluates the competitive landscape, including the threat of new entrants, substitute products, supplier and buyer power, and market rivalry. Finally, the report concludes with strategic recommendations aimed at helping SIA maintain its competitive edge in the dynamic airline industry, emphasizing the importance of adapting to the external environment, leveraging alliances, enhancing customer service, and improving branding and marketing efforts. The report stresses the need for continuous improvement and awareness of external factors to ensure SIA's continued success.