India, Dec. 3 -- After at least 150 flights were cancelled and several others were delayed at major airports across the country, IndiGo issued a 'sincere apology' on Wednesday evening and said that it has initiated 'calibrated adjustments' to adjust the airline's schedules.

Thousands of passengers expressed frustration over the delays, cancellations and chaos at airports due to the technical glitch in check-in systems and other operational troubles, with many flights getting cancelled due to the disruption.

An IndiGo spokesperson issued a statement on behalf of the airline regarding the disruptions until 6:10 pm and said, "We acknowledge that IndiGo's operations have been significantly disrupted across the network for the past two days,...