Cranky mentions today that Delta has plans to cut capacity, especially across the Atlantic once the summer is over. It looks like some of those cuts will come early, as the airline has announced that it will drop Kiev from its route map beginning June 17th.
The route is still served nonstop by Aerosvit and via Skyteam on KLM, Air France and Aeroflot for those who already has reservations.
Delta began flying to Kiev several years back when it tried adding smaller European cities to its network. Many-to-most of those cities have either disappeared or gone to a seasonal schedule as oil prices have increased. Without year-round premium cabin traffic, thinner European routes are best served via connections (which is one of the major benefits of being in an alliance — not having to fly nonstop to Kiev).