Pope Francis's visit to Iraq in March will be a "historic event", the government in Baghdad said after the Vatican announced Monday the pontiff's first trip since the coronavirus pandemic.

"It symbolises a message of peace to Iraq and the whole region," the foreign ministry said in a statement.

President Barham Saleh officially invited Pope Francis to visit Iraq in July 2019, hoping it would help the country "heal" after years of strife.

A few hundred thousand Christians are left in Iraq following sectarian warfare after the 2003 US-led invasion and the Daesh terror group's sweep through a third of the country in 2014.

Francis has long spoken of his desire to visit the Middle Eastern country, although the Vatican said the programme would "take into consideration the evolution of the worldwide health emergency".

The 83-year-old will be the first head of the Roman Catholic Church to visit Iraq, where the number of Christians has dropped dramatically over the past two decades.

"He will visit Baghdad, the plain of Ur... the city of Erbil, as well as Mosul and Qaraqosh in the plain of Nineveh," spokesman Matteo Bruni said in a statement, during a trip planned from March 5 to 8, 2021.

There were more than one million Christians in Iraq but just a few hundred thousand are left following sectarian warfare after the 2003 US-led invasion and Daesh's sweep through a third of the country in 2014.

Francis was forced to cancel all foreign trips in June after it became clear that coronavirus, which hit Italy in early March, would make travel for the elderly pontiff too dangerous.

He said last year that Iraq was on his list for 2020 trips.

At the time he said he hoped Iraq could "face the future through the peaceful and shared pursuit of the common good on the part of all elements of society, including the religious, and not fall back into hostilities sparked by the simmering conflicts of the regional powers".

"The Pope's visit will come as the realisation of a dream of his predecessor, Pope St John Paul II," the Vatican's news portal said.

"The Polish Pope had planned to travel to Iraq at the end of 1999, but was prevented by Saddam Hussein," it added.