I worried about this incessantly after I got my pump 2 years ago, since I travel relatively frequently. It's turned out to be rarely, if ever, an issue. I've found that on most of the trips I've been on, my pump doesn't even set it off, therefore, there's never even a question or delay. I just don't think there's enough metal in it to cause a problem (I have a Disetronic D-tron plus). However, I haven't been anywhere since April now, and I think they were going to increase the sensitivity of the monitoring equipment sometime soon (or so I read somewhere?). The two times I have set it off were in Hawaii and in Orlando, both coming back to Chicago. (Interestingly, I flew into and out of Orlando a couple months later without setting it off...not sure what the difference was). Both times they did what they do with anyone who sets it off: pulled me aside and wanded me. I pulled my pump out to show them. That typically appeased them. I carry a card with me that's been signed by my doctor (Disetronic provided it) and has his phone number and DEA number on it and explains that it's neccessary for me to wear my insulin pump and carry the neccessary supplies. I've never been asked to show it. My grandmother has had several joints replaced and was given a card. When I flew with her and she tried to show it to them, they basically told her that anyone could have one of those and all they were interested in was wanding her, cuz that would prove what she said, while a card would not. I'd have a card or note with you, but odds are, you won't ever be asked to show it. Anyway, bottom line (after all my blathering) is that you aren't likely to even have it set off the alarm. If it does, it's a minimal amount of extra time involved. Just perhaps 5 minutes extra while they wand you. Shouldn't be an issue. And above all, as my doctor said, if they give you problems or don't understand about insulin pumps, insist on seeing a supervisor. You shouldn't have to deal with someone rude an ignorant. If you have any other questions though, please let me know. I've traveled quite a bit with my pump, including two trips to WDW since I got it two years ago.
-Laura