Originally Posted by
seaskybound
Among the lounges at IST do any have a 'walk in and pay' option?
I am not sure but I recall that Millenium lounge had that option. Just ask. List of all lounges
http://www.ataturkairport.com/eng/1_f.php?id=1470
Priority pass is not a bad option if you travel in economy and don't have top level card with the airline/alliance you are traveling with. I have the lowest Priority Pass that came along with Amex. It is basically pay per use and several times a year I use it.