It is also considering raising prices in other parts of the country.
"In recent past, there has been a substantial increase in raw material cost of cattle feed and labour costs, and this has led to increase in cost of milk production," Gujarat Cooperative Milk Marketing Federation (GCMMF), which sells milk under brand Amul, said.
"We have increased the milk prices by Rs 2 litre across all variants in Delhi-NCR region," GCMMF Managing Director R S Sodhi told PTI.
Sodhi said the company is also considering increasing milk prices in other markets including in Uttar Pradesh and Kolkata.
Last week, the company had increased milk prices in Gujarat and Mumbai, citing the same reason.
After this recent increase, the Amul Diamond (premium quality) will now cost Rs 50 per litre from Rs 48 per litre earlier, while Amul Gold (full cream milk) price has been raised to Rs 48 per litre. Amul Taaza (toned milk) would now cost Rs 38 a litre.
The price of Amul Slim n Trim milk which is available in 500 ml and lower volume pouches has been increased to Rs 17 per half litre.
Amul assured that benefits from recent price hike will be passed on to the farmers.
"The price hike will flow back to farmers directly and not in the pockets of middlemen," the company said.
The Gujarat based dairy firm underlined that for every rupee taken from customers, almost 80 paise is paid back to the diary farmers who, it said, are the actual owners.
It is the best consumer to producer price ratio in this part of the world, it claimed.
Amul is a major supplier of milk to the national capital region, sells about 26 lakh litres per day.