Some local media reported that the flight was bringing 205 people back, while others put the number at 104, and that they were mainly from the northern state of Punjab, where Amritsar is located, and the western state of Gujarat.

The Trump administration has increasingly turned to the military to help carry out its immigration agenda, using military aircraft to deport migrants and opening military bases to house them.

Although illegal Indian immigrants have been deported home by previous U.S. administrations, it is the first time Washington has used a military aircraft for the purpose. It is also the farthest destination so far for such flights using a military aircraft.

Reuters reported on Tuesday that the C-17 aircraft with migrants on board had departed for India but would not arrive for at least 24 hours. The flight did not show up on public flight trackers but local news TV channels showed the aircraft taxiing after it landed in Amritsar.

Migration has been among the key issues discussed by India and the U.S. since Trump took charge last month, and is also expected to come up during Trump's meeting with Indian Prime Minister Narendra Modi, likely to take place in Washington next week.

U.S. Secretary of State Marco Rubio also 'emphasised' the Trump administration's desire to work with India to address "concerns related to irregular migration" when he met Indian Foreign Minister Subrahmanyam Jaishankar last month.

New Delhi has since said it will take back such illegal immigrants after verifying their details.

The U.S. is India's largest trading partner and the two countries are forging deeper strategic ties as they look to counter China.

India is also keen to work with the U.S. to make it easier for its citizens to get skilled workers visas.

The Pentagon has said it plans to deport more than 5,000 migrants held by U.S. authorities, and Reuters reported last week that a flight to Guatemala used for the purpose likely cost at least $4,675 per migrant.