These awards have been given by the Airports Council International (ACI) for 2015.
Indira Gandhi International Airport (IGIA) is managed by Delhi International Airport Ltd (DIAL) -- is a three-way joint venture led by GMR group.
Delhi airport has "retained the world's number 1 position for the second consecutive year in 25-40 Million Passengers Per Annum (MPPA) category," DIAL said in a release today.
The two other awards are for best airport by size & region -- Asia Pacific (25-40 MPPA) and second best airport by region (Asia Pacific).