For all we know Jeffrey Epstein could have used his private island to entertain underage girls less than 1% of the time he was there. I'm just playing devils advocate to show you how even if a list existed, it wouldn't even matter.
First of all, we have no idea what Jeffrey Epstein did on his private island. For all we know he conducted business or participated in standard activities a majority of the time he was there. it would be wrong to assume he was conducting nefarious activities at all time, as we have no way to prove that. Thus, even if flight logs to the island were to exist, there's no way to prove it had anything to do with underage girls. Flight logs are meaningless.
A client list, which really has no logical reason to exist and likely has never existed, would also not be enough to prove anything. There is always skepticism about if the list is real, what the list actually refers to. The list is not going to be titled "Underage girls for Powerful people club". You're going to need to prove that list was a client list, something that's basically impossible. Beyond that, because there was a criminal organization in the white house, aka the democrats, you will always wonder if they fabricated evidence in the files, as that is right in the wheelhouse of illegal activities they've been caught doing over the years.
The only way to know for sure whether or not Trump was there, would be go to back in time and watch the island to see if he was there or find video recording of him being there, which doesn't exist.
The Epstein files are being used by the media as another push to try and destroy Trumps character, something they've been doing for the past 9 years. Russia russia russia, steel dossier etc how many lies will the democrats fall for, it's like tricking toddlers.