Question : Do prices fluctuate more for this route than others?
Answer : Ranging anywhere from $205 to $451, prices for KBP to LUX do fluctuate a lot more than most routes from Ukraine. However, the sooner you book, the better price you tend to get.
Question : How long do most people visit Luxembourg?
Answer : Of course you're not most people, but if you were, you'd stay roughly seven days.
Question : Can you cut down on flight costs by changing the day of the week you travel to Luxembourg?
Answer : The cheapest day to fly in June is Thursday. Flexibility is paramount when booking travel plans in order to keep travel costs down.
Question : What day in the next four weeks has the best fares?
Answer : Since low prices are preferred, look at Jun 22nd. As of May 22nd, it's showing the cheapest ticket sales at $212. That is 13% below the average price for this route, so you can spend that extra cash on a fun experience in Luxembourg.