Baghdad International Airport will be closed on 29 and 30 January as a security measure to help safeguard the country's elections.
Iraq's borders with its six neighbours will be shut from 29 until 31 January, and all traffic will be barred except for Muslim pilgrims returning from the Hajj.
A 7pm to 6am ban on driving cars will be enforced until 31 January.
There is a dusk-to-dawn curfew in most of the country during the election period.
Iraqis will be barred from travelling between governorates.
The interim Iraqi authorities have announced a curfew in the northern city of Kirkuk after 10 polling centres were attacked there in the past few days.
Nearly 650 additional British troops have arrived in Basra to help maintain security for the polls, increasing the number of British troops in the country to in excess of 9000.
Washington will deploy an extra 12,000 troops to bolster security for the election, increasing its troop numbers to 150,000.
More than 100,000 Iraqi police and soldiers have been deployed across the country to enforce election-day security.
Iraqi police will guard polling centres and the national guard will form an outer ring.
US forces and the Iraqi army will make up a second ring of security on the edges of major cities.
Voters will be searched before entering polling stations.
Shops have been ordered to shut in the city centre of Najaf.
Foreign workers have been asked to leave from several areas of the country.