This report provides a comprehensive analysis of Singapore Airlines, examining its business operations through the lens of various management tools. It begins with an introduction to the airline, including its history, mission, vision, and core values. The core of the report applies analytical frameworks such as PESTLE and SWOT to assess the macro-environmental factors impacting the airline and its internal strengths, weaknesses, opportunities, and threats. Furthermore, the report utilizes Porter's Five Forces to evaluate the competitive landscape of the airline industry. The analysis identifies key challenges such as domestic market share growth and emerging competitors, as well as opportunities stemming from strategic alliances and market expansion. Finally, the report concludes with management recommendations to address identified weaknesses and threats, offering strategic insights for the airline's future development and sustained success in the global market.