Since a lot is written about AEROSVIT (to which belongs Windrose, Dneproavia etc.) and how bad it is I want to point that there's also a better Ukrainian choice: Ukraine International.
I'm using this airline quite often, flying to Central Asia & Frankfurt. In contrast to Aerosvit the ground staff of Ukraine International is helpful & friendly, do their best. The aircrafts are 50/50, some older 737/300/400/500, some newer 737NG. But always the onboard staff is friendly and serve you with a smile.
Seats are mixed. Either with good legspace or with very poor one (when you're getting one of their charter versions).
I'm always taking Business Class and so the quality of the Business Class seats very much depends on the aircraft whie the food is okay. But prices of Ukraine International Business Class are half what Lufthansa etc. are charging.
Just wanted to point out that not all Ukrainian airlines are bad, that there's a better choice.