The attacks were launched since last night in Shawal valley, a mountainous and thickly forested region near Afghan border which is considered as bastion of militants.
A security official said that troops were steadily advancing towards the border and militants were on the run.
The jet pounded rebel hideouts, killing 12 of them including a Taliban commander known as Hezbollah, the official said.
Pakistan has already announced that the last phase of operation had started in the border region of North Waziristan.