IT in nit surathkal or mnnit allahabad...

what is average package in IT in above 2

Let me first clear you that both are good NITs. If you are performing well in your stream and have the knowledge about it, you will definetly get the good job from the campus itself. Both the institute has the good record in terms of placement too. May be average package may vary. For actual statistics of the package you can refer to there website.