Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Denver to Lviv as you normally would.
Looking at all options, your cheapest flight can be booked for $767. While the most popular route (Denver Intl - Lviv Danylo Halytskyi Intl) can be booked for $1,119 on average our data indicates $1,043 when flying from Denver to Lviv.