India, Dec. 3 -- IndiGo cancelled at least 70 flights from Bengaluru and Mumbai on Wednesday, citing technology issues, airport congestion, and operational requirements, even as officials attributed the cancellations to crew shortage following the new Flight Duty Time Limitations (FDTL) implementation from November 1. FDTL limits the maximum time pilots and flight crews can work to prevent fatigue and ensure safety.

The civil aviation ministry's data showed IndiGo's On Time Performance (OTP) dropped to 35% at metro airports on Tuesday.

IndiGo said its teams were working diligently to ensure that operations normalise as soon as possible. "We have had several unavoidable flight delays and some cancellations in the past few days due to var...