People who have never chartered an aircraft usually assume they are buying speed. They are not. A light jet cruises at around 400 knots; a narrowbody airliner on the same route is often quicker in the air. The aeroplane is not where the time is found.
The four hours nobody counts
A scheduled flight from Delhi to Mumbai is about two hours in the air. The day it consumes is closer to seven. There is the instruction to arrive two hours before departure, the queue at security, the wait at the gate, the taxi to the runway, the wait for a stand at the other end, the baggage belt, and then the city.
None of that appears on the ticket. All of it comes out of the working day, and most of it is spent standing still.
What a charter actually removes
It removes the queue, the connection and the published schedule. You report at the general aviation terminal roughly twenty minutes before departure. Security is on the same side of the building as the aircraft. The aeroplane leaves when you are aboard, because there is nobody else to wait for.
The flight itself takes about as long as it always did. The difference is that the two hours are the whole cost rather than a third of it.
The arithmetic that matters
Delhi to Mumbai is a block time of roughly two hours ten minutes in our CJ II; Bengaluru is about two hours forty-five. With 1,450 nautical miles of range from New Delhi, most of the country is a single sector.
That turns a two-day trip into a one-day trip, and it does so without a hotel, without a night away, and without the meeting being scheduled around the last flight home. For a board that needs to be in two cities and back, this is the entire proposition.
When it is not worth it
One person travelling alone, on a flexible date, between two cities with a dozen daily departures and a decent business class, is usually better served by the airline. A charter is a poor use of money in that situation and we will say so.
It earns its cost when several people are travelling together, when more than one sector has to happen in a day, when the destination is poorly served or unserved, or when the timing is genuinely fixed — a signing, a site visit, a hearing, a transplant. The question is never how far. It is how much of the day you get to keep.