Airliners This is my favorite it is Excellent but more retro stuff and more oriented to planes rather than airport stuff. (bi-monthly)
http://www.airlinersonline.com/Magazine.html
Airways good magizine but it tends to be the same as Airliner World ... if you had to choose one go with Airliner World. (monthly)
http://www.airwaysmag.com/
Airliner World Excellent magizine. Lots of stories on airports worldwide. ( montly)
http://www.airlinerworld.com/