A United Airlines Boeing 767 is at London Heathrow Airport in London, United Kingdom, on June 10, ... [+] 2023. (Photo by MI News/NurPhoto via Getty Images)NurPhoto via Getty ImagesUnited Airlines (NASDAQ: UAL) saw its net income surge by 3.5x y-o-y to $2.6 billion in 2023. This can primarily be attributed to higher revenues, and lower fuel costs. In this note, we discuss United Airlines’ margin profile along with its stock performance lately.Firstly, let us look at United Airlines’ stock performance. UAL s ...