New Delhi, March 19 -- Passenger growth at GMR Group-managed Delhi International Airport (DIAL) is expected to slow down over the coming years, due to capacity constraints and emerging competition.

Delhi International Airport expects the slowdown to stem from two factors: the airport nearing its peak capacity and the impending launch of Noida International Airport (NIA) in Jewar, Uttar Pradesh, which is expected to divert some traffic.

"As capacity constraints limit Delhi Airport's ability to accommodate demand, certain traffic is expected to be spilled over to NIA. The NIA is expected to compete for IGIA's market share, and it is expected to have more passengers from eastern Uttar Pradesh and parts of Haryana with lesser travel time to...