Andrei,
It is not in the area you indicated but you might be interested in the former agro field at Nalivaykovka (sp?), now home to the aeroclub of the Aeroprakt factory:
http://www.aeroprakt.kiev.ua/pages/show/aeroclub/
Hoping this helps,
PS someone mentioned euroga.org and while it is true there are a lot of high budget high altitude pilots there, there is also a fine chap flying an ultralight in Northern Romania, he might be able to help.
PPSS another possible source of info is
http://ourairports.com/countries/UA/...Map,country=UA but do not count on it being either complete or up to date.