With nearly 47,500 flights, Mumbai-Delhi is world's third busiest air route

Hardly any additional capacity is now available at Mumbai airport to increase flights on this route, to sustain the position

It is the third-busiest air route in the world, with as many as 47,500 departures and landings last year.

Yet despite reaching this position, the Mumbai-Delhi route could face serious challenges in sustaining or improving it this year. The reason? Hardly any additional capacity is now available at Mumbai airport to deploy more flights on this route. 

But with the demand growing by 10-12 per cent annually, and with no possibility of adding more flights, flyers will soon face a hike in air fares this year.

According to OAG, an air travel intelligence firm based in the UK, the Mumbai-Delhi