In previous evacuations, buses leaving Douma have gathered near Wafideen or on the side of the motorway outside Damascus, and waited for hours for others to join them before setting off as a full convoy to northern Syria.
Jaish al-Islam, which has been defending Douma against an offensive by Russian-backed Syrian government forces, has not confirmed the agreement with the government.
Fighters from the Army of Islam would evacuate to Jarablus, a town in the northern Aleppo province that is shared between rebel and Turkish control.
Buses carrying Syrian civilians and rebels began leaving the last opposition holdout in Eastern Ghouta Tuesday on a second day of evacuations, as the regime eyed the total reconquest of the enclave.
Migrant caravan drops plan to travel to US-Mexico border
Most of the migrants joined the caravan in hope of reaching the USA and escaping from violence plaguing their own countries.
The Syrian army launched a massive operation in February against the rebels in Eastern Ghouta and secured the evacuation of 150,000 civilians who will return home once the situation stabilizes.
Jaish al-Islam, or "Army of Islam", had previously refused to leave the area.
Syrian government forces, backed by Russian Federation, have now recaptured almost all of eastern Ghouta, on the outskirts of Damascus, from the rebels in a ferocious assault that began in February, marking a major victory for President Bashar al-Assad.
Elsewhere in Syria, Russian and Syrian military officers told rebels in Eastern Qalamoun, about 25 miles northeast of Damascus, they must accept regime rule or leave.
Central AL Forecast: Cold Thursday Start, Storms Friday/Weekend
The storm threat is expected to end by Saturday with a another cool down expected by Sunday, according to the weather service. There is going to be about a 30-degree temperature difference between Friday afternoon and Saturday morning.
A two-year-old Syrian baby named Kasim Kahveci from Eastern Ghouta, whose face was ruined in an attack by Assad regime forces, arrived in Turkey on Wednesday to receive medical treatment, according to Turkish Red Crescent official.
Out of the almost 400,000 people besieged in eastern Ghouta for years by Syrian government forces, 130,000 had fled in the last three weeks, Egeland said.
Damascus:China has donated $1 million in aid to the World Food Programme (WFP) in Syria to purchase food for the war-stricken Syrians, the Chinese Embassy in Syria has said. They included fighters from the Faylaq al-Rahman and Ahrar al-Sham rebel groups, their families and other residents.
Douma is a stronghold of the powerful Army of Islam rebel group. Since then more than 46,000 people, about a quarter of whom are fighters, have reached Idlib, according to Syrian authorities.
US stocks open lower on escalating US-China trade dispute
He added that the company also has a factory in Vietnam that can replace some of its China production capacity if needed. History says all sides lose in trade wars". "They have a lot more to lose in any escalation in this matter".
The regime assault on Eastern Ghouta since mid-February has killed more than 1,600 civilians and caused tens of thousands to flee into regime-held territory.
- Amazon Key now available across the US
- Isle Of Wight Council's Gender Pay Gap Revealed
- Magnitude 5.3 Earthquake Strikes Off Southern California Coast
- Little snow but heavy winds expected throughout Wednesday
- Insomniac's Spider-Man PS4 game coming September, collector's edition revealed
- Prince Philip in 'good spirits' after hip surgery
- Gordon goes deep as Mariners take first series of season
- Trump pushes Republicans to use 'nuclear option' on border
- Apple is working on new touchless controls for its upcoming iPhones
- John Krasinski Is Very Interested In A Fantastic Four Reboot Role