The ministry has constituted a four-member committee to review the circumstances leading to the massive operational disruptions. Its report is expected to be submitted on December 28.

Representatives of Air India, Air India Express, Akasha and SpiceJet also attended the nearly four-hour-long meeting.

A few of the MPs questioned whether the ministry was unprepared for such a situation following the implementation of the revised Flight Duty Time Limitation (FDTL) norms or if it was an "arms-twisting technique" adopted by Indigo to get the exemption for the new routine, the sources said.

The members said the panel has taken serious note of the difficulties faced by thousands of passengers due to disruption in air services.

"Even parliamentarians, who were in the national capital for the Winter Session of Parliament, faced the brunt of flight cancellations by IndiGo and delays by other airlines," a panel member said.

Several MPs also received complaints from people about air fares shooting up due to the scenario.

IndiGo cancelled hundreds of flights for days beginning December 2 across the country. Aviation regulator DGCA has served notices to IndiGo CEO Pieter Elbers and COO Porqueras, seeking their explanation.