[phire]

They reported a dual GPS failure.

My guess, they picked an airport they knew well, that they could probably navigate to with nothing more than a compass and landmarks. And if they suspected GPS jamming (personally, a dual GPS failure over Russia would be my first guess) they would be biased towards an airport far away from an active war zone.

I am curious why they didn't divert back to their departure airport at Baku. It's roughly the same distance and surely they knew that airport even better, and could just follow the coastline back. Maybe by the time they had the plane under control they were already much closer to Aktau.