The shortest one-stop I can see is with UT air with an 1 h layover at VKO. But that does put you in Samara at 3 A.M. Personally, I'd take a non-stop on Orenair (or whatever it is that they call themselves now).
Or you could get the SU1235 out of Ufa at 6 AM, connecting to SU1210, and be in KUF at 10:45. The connection at SVO is 1 h 25 min.