And yes, this is a no fly zone

The Director General of Civil Aviation has issued a 'NOTAM' (Notice to Air Men) for diverting all flights flying over Delhi at the time of the parade.

Earlier, planes flying above 32,000 feet did not fall in the category of no-fly zone, but now the height has been raised to 35,000 feet, the sources said.

No plane will be flying within a radius of 400 km of Rajpath as against 300 km on earlier occasions, they said. This means airports adjoining Delhi like Jaipur, Agra and as far as Lucknow or Amritsar will not operate flights when the function will be on in the national capital.