Question : How long do most people visit Kiev?
Answer : Of course you're not most people, but if you were, you'd stay roughly 44 days.
Question : Is price more important than specific travel days for you?
Answer : In May, Monday is your cheapest day to fly. Being flexible with your travel days garners even more savings during booking.
Question : What is the cheapest day to fly in the next four weeks?
Answer : Since low prices are preferred, look at May 8th. As of Apr 24th, it's showing the cheapest ticket sales at $1,003. That is 4% below the average price for this route, so you can spend that extra cash on an adventure rather than the flight.
Question : Are you paying the cheapest or highest price for your ticket to Kiev?
Answer : Flight prices change much less than most routes from the United States for LEX to KBP. They vary from $976 to $1,308. Remember, the sooner you book, the better price you tend to get.