The John F. Kennedy International Airport and Newark Liberty International Airport, both in the US, need to be reconfigured to accommodate future passenger growth in the next three decades, according to a new study.
The Regional Plan Association (RPA) study said that the region's two largest airports must be reconfigured to allow construction of additional runways to support 50 million travellers more per year.
The RPA's study, which has been partially funded by New York's Port Authority, said the overhaul of the airports would need about $15bn.
It noted that all three terminals at Newark would have to be partially razed and rebuilt at an estimated cost of as $5bn.
The study has provided seven possible configurations at Kennedy Airport to make space for one or two runways, which could cost anywhere between $1bn and $3.5bn, according to the New York Times.
The study said the proposed development would require major changes in the region's airspace, a revamping of the air traffic control systems and legislation by the US Congress.