This article explores into the History of Singapore Airlines, the flag carrier of the Republic of Singapore and based at the Singapore Changi Airport. Singapore Airlines, also known by its abbreviations of SIA or SQ, has often been ranked throughout its history as either amongst the best or the best airline in the world. Ranked as a 5-star airline by Skytrax for the last 2 decades, It has also been ranked amongst the top 10 air carriers worldwide in terms of the scale of revenue-passengers-kilometres, and 10th in the world for the volume of international passengers carried.