I'm glad you "refreshed" this subject, it reminded me to add our Uber experience.
We took a Uber from POR to AK one morning, I guess around 8:30ish. It was our very first time using the service, in January, 2017. Was super quick & easy. picked us up by luggage drop off at POR & dropped us off at the taxi area at AK, right up front, which I suppose was due to no taxi's being around! I believe it was about !$16, but I can't swear to it. Anyway, it was a good experience. Will be doing it again.