Flight MAP database

Dear friends,

Does anyone know if there is a way to check what flights flew over a certain territory in February or March? I know flightradar premium account allows to do that for up to one month back. But I need info for end of February-March. Any ideas where this information can be obtained?

I need this to compare the info with current flight patterns and determite which airlines stopped flying over the territory I am interested in. Any advice will be appreciated.

Thanks!