In the event, at least one rebel group - this being Hayat Tahrir al-Sham (formerly Jabhat al-Nusra, the Syrian branch of Al-Qaeda) - has made a decision to re-militarize the Al-Hass area and to this end, the last twelve hours has witnessed the jihadist faction flood southwest Aleppo with reinforcements.
Later, they fired rockets at regime positions from farmland in the Al-Tamana area of southern Idlib, an AFP correspondent said.
If it is recaptured, the airport will be "the first military base in the hands of the regime in Idlib province", said Observatory director Rami Abdel Rahman.
The Observatory said Thursday that 96 civilians have been killed since the military campaign on Idlib and Hama countrysides started on Dec.25.
The airport, which straddles the border between the provinces of Idlib and Aleppo, has been under the control of Hayat Tahrir al-Sham since September 2015.
Almost 100,000 people have been displaced since early December by fighting in northwestern Syria, where the regime is waging an offensive against jihadis, the United Nations said on Wednesday.
The U.N. agency said the situation in Idlib was "extremely chaotic" with newly displaced people reportedly scattered across open areas.
"Due to the large numbers of people moving, many are left with no shelter, which could expose them to various risks, especially as the winter temperatures continue to drop", it said in a statement. "The fear affected our brains", said the mother, quoted by the IRC.
At least 11 civilians were killed in heavy Syrian regime air raids on Idlib province on Friday night, where fighting on the ground has raged for over a week.
The violence comes as United Nations humanitarian chief Mark Lowcock wraps up a visit to Syria during which he met with authorities.
The recent surge in the violence - taking place just weeks before Russia's proposed "Sochi" conference - has caused a mass exodus of Syrian civilians, with an estimated 113,000 Syrians fleeing Idlib in recent weeks.