Lucknow, Dec. 4 -- Chaos, long queues and protests were witnessed at the Chaudhary Charan Singh International Airport in Lucknow on Thursday after IndiGo cancelled 12 flights, leaving hundreds of passengers stranded for hours.

The airline cited a sudden crew shortage as the reason for the cancellations. The situation has arisen nationwide with the carrier struggling to adapt to stringent new crew rostering rules.

Airport sources said the affected flights included key domestic routes to Delhi, Mumbai, Hyderabad, Pune and Ahmedabad.

An incoming Dubai flight was also cancelled, inconveniencing families waiting at the arrival gate and disrupting onward travel plans for those on board.

Demanding their money back, angry passengers raised sl...