A Singapore Airlines Airbus A350-941 takes off from Barcelona-El Prat Airport in Barcelona, Spain, on April 29, 2026. (Photo by Joan Valls/Urbanandsport/NurPhoto via Getty Images) Nurphoto | Nurphoto | Getty Images Singapore Airlines has seen Air India drag on its earnings for about five quarters, but analysts and the airline say the investment will pay off in the long term. SIA reported on Thursday a record revenue of 20.5 billion Singapore dollars ($16.06 billion) for its financial year ended March 31, as operating profit surged 39% to SG$2.38 billion on higher demand, higher yields and lower full year net fuel cost, SIA said. However, net profit plunged 57.4% year-on-year to SG$1.18 billion— mainly owing to Air India's losses and an accounting gain in the previous year. Singapore Airlines 2025 earnings Earnings per share: 38.4 Singapore cents vs. 35 Singapore cents expected Revenue: SG$20.5 billion vs.…