The minister flew into the Siachen base-camp, located on the snout of the galcier, at 9.22 AM and was received by senior army officers, a defence spokesman said.
Irani laid a wreath at the Siachen War Memorial. She later addressed the jawans and praised them for their dedication to duty.
"We are very proud of the soldiers serving here who have never thought of their own good and of their families. They serve diligently, with passion...So a thanks from a grateful nation," Irani said.
The minister flew back after spending around one-and-a- half-hours at the base camp.
Union Minister for Commerce and Industry Nirmala Sitharaman also tied rakhi to the jawans at Lumla in Arunchal Pradesh's Tawang district.
"I am very grateful to the Prime Minister who designed this programme. He made us women ministers reach various border posts and ensured that we are here to tie rakhi, thereby making sure the message goes across that the government cares for them," she said.