It said the strikes killed at least two children and wounded 30 people near the town of Atareb, which is in rebel-held territory.
A number of tents were damaged or burned in the strikes, it added. Russia has waged an air campaign against insurgents in support of Syrian President Bashar al-Assad since September.
The British-based Observatory, which tracks the violence using a network of contacts on the ground, said the jets were believed to be Russian because of their colour and the fact there were several planes flying in formation.