However, isn't that always the case? What about Portland, OR (PDX) and Portland, ME (PWM) or even worse San Jose, CA (SJC) and San Jose, CR (SJO). When I was in college in Maine and my parents lived in Oregon I would just confuse the hell out of them when I would check in in Portland on an e-ticket going to Portland. -----Original Message----- From: Mike Tobin [mailto:mtobin@xxxxxx]=20 Sent: Tuesday, May 20, 2003 10:50 PM To: AIRLINE@xxxxxxxxxxxxxxxxx Subject: DEN-DIA >> And why did they use the code DEN, when DIA was obvious. In addition to the earlier good reasons, as I recall, there was at the time concern DIA Denver International Airport would be confused with IAD Dulles International Airport and bags and pax would be sent to the wrong place Mike