"From Geeta to Gurpreet and now to Sonu! EAM @SushmaSwaraj welcomes the young boy Sonu home from Bangladesh," External Affairs Ministry Spokesperson Vikas Swarup tweeted.
Sonu arrived in Delhi earlier on Thursday on a flight from Bangladesh.
Now 12, Sonu, who was traced at Jessore in Bangladesh, was said to have gone missing from Delhi in 2010.
A senior official of the Indian High Commission in Dhaka went to Jessore in May to meet Sonu on the directive of Sushma Swaraj.
The Indian High Commission in Dhaka took custody of the boy on Tuesday.