New Delhi, Dec. 5 -- India's largest airline operator, IndiGo, is facing major headwinds due to ongoing flight delays and cancellations resulting from the implementation of updated crew rostering Flight Duty Time Limitations (FDTL) norms.

Mint reported earlier that more than 500 IndiGo flights have either been delayed or cancelled, resulting in a travel nightmare for flyers across the country.

The airline also informed the regulators that the operational disruptions were a result of minor technology glitches, schedule changes for winter, adverse weather conditions, congestion in the aviation system and the updated FDTL norms.

From IndiGo's profits and market share to its business model, let's take a closer look at how India's largest a...