The President of Pakistan, Asif Ali Zardari, is due to travel to India in the first visit there by a Pakistani head of state for seven years.
Zardari will meet Indian Prime Minister Manmohan Singh, before travelling to an important Muslim shrine in Rajasthan.
Officials say the trip is a private visit, but there is hope it could boost economic ties between the two nations.
However correspondents say little progress is expected on other issues.
Relations between the two countries have been gradually improving since peace talks were derailed after the Mumbai attacks in 2008.
But tensions remain over more sensitive issues, such as the disputed region of Kashmir, and Pakistani militant activity against India.