The airline is offering attractive fares for this flight, which will operate four days a week, both ways.
AI was the first airline to start operation from Durgapur in May 2015 but it withdrew the flight on June 17, 2016 citing 'operational reasons', the sources said.
At that time, the flight used to operate between Kolkata and Delhi via Durgapur.
The flight both ways are full tomorrow, the AI sources added.
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