Mumbai/IBNS, Dec. 8 -- Shares of InterGlobe Aviation Ltd., the parent company of IndiGo, fell nearly 7 percent on Monday as the airline continued to grapple with a week-long operational crisis that has led to massive flight cancellations and delays, according to media reports.

The stock declined after Delhi airport authorities warned that IndiGo flights may continue to face delays, signalling that the disruption is far from over.

While Monday's cancellations remain high, they are lower than the 650 flights cancelled on Sunday and the over 1,000 cancellations reported earlier in the week.

IndiGo admitted that it was unable to adequately prepare for the rollout of the revised Flight Duty Time Limitation (FDTL) norms for pilots, which cam...