Friends of ours want to come from US to Lithuania then go to Ukraine and back to US (or Ukraine, then Lithuania). They don't need visas to go to either Lithuania or Ukraine and thinking logically they should be able to fly to Ukraine from Lithuania without any visas.
But logic is not your best adviser in questions like this. What's the best way to verify that this is the case?
I can't answer specifically about Ukraine or Lithuania, but in many other similar situations I've never had a problem.
Yes, you will have no problems flying in and out of these two countries so long as you do not stay over 3 months in either. They won't care where you've been previously. I've been in and out of both Ukraine and Lithuania multiple times, though never directly between the two. I go often between Ukraine and Poland and they never care where I was before. They only care that I haven't overstayed my visa in their own country. I'm also a US citizen.
