There were a few payphones at Logan as recently as 2019, I think.

I hope they are still there. I actively miss payphones. It was nice not to have to be more personally responsible for your ability to communicate while moving around in the world than with the requisite amount of pocket change. (My feelings on the subject strongly influenced by the cellphone blackout of the Rally to Restore Sanity and/or Fear in 2010 and the problem of communicating with people nowadays when they are between phones.)