Local media reports say an Isis advance on the airport near the city of Deir Ezzor has ended in failure.
According to local news platform Deir Ezzor 24, the terror group has mobilised more than 1,000 soliders - formed mostly of militants from rural Aleppo and a number of caucasian fighters - to beseige the city in eastern Syria.
The attack on the airport was launched in the waning hours of Sunday night, targeting locations held by the Syrian Arab Army (SAA) at the Al-Tameen Brigade Base.
Military sources told Al Masdar News the army repelled the assault, killing at least 15 militants in the process.
The sources told the outlet the base remains secure against the threat of militant attack.
With battles ongoing in Raqqa and Mosul, Isis appears to be attempting to take over to form a new capital of their so-called caliphate.
Fighting in the city continues to remain heavy, as scores of Isil fighters attack key positions held by government forces.