I’ve never flown Aeroflot and have no elite status with any airlines. I do have lots of points/miles with various programs.

I want to book a one-way flight SVO-LED for cash in Economy FLEX. This class allows an upgrade to Business with miles.

I cant find a chart online that shows how many miles I would need to upgrade to business. Can someone please help me with this information? If I knew how many miles I would need I could transfer points to Aeroflot Bonus account I’ve set up.

Would I have to book this on the phone or can it be done online in English?

Can I book this through Delta Skymiles?

Thanks for any assistance you can give me about this process.