Question : Is the price you found a good deal?
Answer : Flight prices fluctuate less than the majority of routes from Ukraine for KBP to STR. They range from $192 to $290. Prices tend to be lower the further out you book.
Question : What is the cheapest day to fly in the next four weeks?
Answer : Since low prices are preferred, look at Apr 29th. As of Apr 24th, it's showing the cheapest ticket sales at $287. That is below the average price for this route, so you can spend that extra money on an adventure in Stuttgart.
Question : How many days should you spend in Stuttgart?
Answer : Passengers from KBP to STR stay 11 days on average.