Passengers wait outside the IndiGo airlines ticketing counter at Mumbai's Chhatrapati Shivaji Maharaj International Airport in India after several IndiGo airlines flights were cancelled. Francis Mascarenhas/Reuters Reuters —

Air travel across India was in turmoil for a fourth day on Friday after IndiGo canceled more than 1,000 flights, including all departures from New Delhi, prompting the government to announce special relief measures for the country’s largest airline.

In a bid to improve air travel safety, Indian authorities have introduced new stricter regulations limiting pilot flying times and placing tighter restrictions on their operation of night-time flights.

But IndiGo admitted it failed to plan properly ahead of a November 1 deadline for the measures’ introduction. W

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