So https://travel.stackexchange.com/a/43694/4188 is marked for deletion for being too short. However a) it's not a comment, it's a complete, standalone, little known answer b) there's nothing more to say, am I to explain the UI of skypicker? Especially since it changed since the answer was written, it's quite futile.
there's nothing more to say
Truth is: there's always something more to say. In my opinion the current answer provides no added value, although it has the potential to do so. As it stands it's more of an RTFM statement than a teach-a-man-to-fish answer. Even worse is the fact that it inevitably looks like a link-only answer. Therefore I personally agree with the delete vote - it should in fact be converted in a comment. Although I did not vote on it, I have however previously voted on many other similar answers.
To improve the quality of the answer you could either explain how the tool works, or why it works, or what's the advantage over the suggested solution. You could even cover all of the above. Be scientific about it. It's worthy to note that the other answers to the question all offer more than (just) a link.
All in all the goal here on SE is to create quality answers to interesting, and valid, problems. RTFM (or link-only) answers don't quite cut it.