In 2014 Doug Stankey posted details of a website showing the locations of many Luftwaffe airfields in a variety of countries. See -
"Airfields of the Luftwaffe" on the Michael Holms website:
www.ww2.dk
Unfortunately, airfields in Russia are not currently included. There are contact details on the website - perhaps he has information not yet posted which may be of use to you.
Good luck
Peter