In what could become a turning point for airport development across India, the Union government has clarified that the long-standing restriction on building greenfield airports within a 150-kilometre aerial radius of an existing airport will no longer apply once the existing facility reaches capacity saturation.

The clarification was made by Union Civil Aviation Minister Ram Mohan Naidu after he landed at Bhogapuram Airport near Visakhapatnam on a validation flight. His statement signals a subtle but potentially powerful shift in how India plans its future airport infrastructure.

“For the 150-kilometre radius policy, once capacity is saturated, the clause no longer applies. There is an opportunity for the State to cater to a second airport,” the minister said. He added that the policy was never meant to block development, but to ensure the operational stability of the first airport until demand genuinely outgrows existing infrastructure.

Why the 150-km rule was introduced?

The 150-km rule was originally designed to protect the commercial and operational viability of newly developed airports. It prevented the creation of competing airports too close to each other, which could split passenger traffic and weaken the economics of private airport projects.

Under concession agreements, such as the one governing Bengaluru’s Kempegowda International Airport, no new airport or major upgrade was permitted within a 150-km radius for 25 years, a clause that runs until 2033. While this provided stability for investors, it also limited States’ ability to respond quickly to surging passenger demand in fast-growing regions.

Bengaluru, Hosur and the capacity question…

The impact of this policy has been most visible in southern India. Tamil Nadu’s proposal for a greenfield airport at Hosur was rejected under the UDAN scheme because it lies just 75 km from Bengaluru airport.

However, Bengaluru airport has now recorded 41 million passengers in FY25, growing at double-digit rates in both domestic and international traffic. Its current capacity is around 55 million passengers per annum, meaning that at the present growth rate, it could hit saturation within the next three years.

While the airport operator has ambitious plans to eventually scale capacity to 100 million passengers per annum, the minister’s remarks raise a critical policy question.

Will “saturation” be assessed based on existing capacity, or on long-term expansion potential? The answer to this will decide whether projects like Hosur can move forward in the near future.

A push for second airports in metros

The government is now actively encouraging States to plan second airports in major urban centres to avoid congestion, delays and capacity crunches, a problem already evident in metros like Delhi, Mumbai and Bengaluru.

Similar debates are emerging around the Hindon civil enclave near Delhi, where concerns have reportedly been raised about traffic diversion and commercial impact on existing airports.

By allowing second airports once saturation is reached, the government appears to be shifting from a “protect the first airport” mindset to a more demand-driven infrastructure planning approach.

India is on an aggressive aviation growth path, with rising air travel from tier-2 and tier-3 cities, island regions and the Northeast. The minister pointed out that China, with a comparable population operates nearly 4,000 aircraft, underlining the scale of infrastructure expansion India will require in the coming decades.

Projects such as Noida International Airport at Jewar are nearing regulatory completion and are expected to be inaugurated soon. Bhogapuram Airport is likely to be inaugurated by mid-2026. Andhra Pradesh is also exploring a greenfield international airport at Amaravati as part of its capital development vision.

So, what are the likely challenges that Indian aviation could face with this infrastructural boom?

-There is still no transparent definition of what “capacity saturation” officially means

- Existing concession agreements may need renegotiation, which could lead to legal and commercial disputes.

- States may face uncertainty in planning timelines without clearer benchmarks.

-Competing airport operators may raise objections over traffic diversion and revenue impact.

In short, the rule may be softening, but the policy framework around it is still evolving.

An important shift?

The government’s statement may not be a formal rule change yet, but it marks a quiet shift in thinking. India is slowly moving from protecting early airport investments to planning for a future where demand, not distance, will define where new airports come up.

If implemented with clarity and transparency, this approach could unlock long-pending airport projects, decongest overcrowded metros, and reshape India’s aviation infrastructure landscape for the next decade.