"Both the bases will have two squadrons of the Sukhois.
They already have one squadron each. The next squadrons would be coming within a few years'' time," Eastern Air Command Air Officer Commanding-in-Chief Air Marshal KK Nohwar said.
The first complement of the MKI variant of Su30 fighter jets arrived at Tezpur last June and the squadron is operational.
The second squadron in the Northeast was deployed at Chabua in Upper Assam last month.
IAF sources said the necessary infrastructure in these air bases were being upgraded to house the warplanes which will subsequently replace the age old MIGs.
Already the ''vintage'' MIG 23 and MIG 25 planes have been phased out.
"Once adequate number of Sukhois and other modern aircrafts come in, the MIG21s would also be eventually phased out," they said.
The IAF has been expressing concern over the maintainability of the older generation aircrafts like MIG 21s in the force which are operating since early sixties. There have been a number of incidents of MIG 21 crashes in the last couple of years.
Another Su30 squadron is likely to be deployed at the Bagdogra air base in the region, they said.
Having aerial refueling capability, the Su30 MKI multi-role combat jets have a combat radius of 1,500 kilometer. The MKI variant of the warplane which was inducted into the Indian Air Force in 2002 are said to have an impeccable safety record.