"Due to the restrictions over the NOTAM issued over Chennai airspace the arrival of flights have been rescheduled from May 8 to May 14 except (May 9 and May 13)," the airline said in a statement.
The passengers who have booked flights were notified on the new schedule through short messaging services (SMS) and other channels, the release said.
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Flight schedules that have been affected due to NOTAM are Pune-Chennai, Chennai-Hyderabad, Hyderbad-Delhi, Delhi-Kolkata, Kolkata-Chennai, Chennai-Delhi-Chennai, Chennai-Madurai-Chennai.
Last week, IndiGo had said operations on multiple sectors were affected due to the NOTAM issued over Bay of Bengal airspace.
NOTAM is a notice filed with an aviation authority to alert aircraft pilots of potential hazards along a flight route or at a location that could affect the safety of the flight.
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