Even before 9/11, any pro film was tough to come by except in major cities in the West, so you needed to pack plenty. When I last went (with film) back in the late 1990s, any film other than 35mm consumer color negative of doubtful storage was a problem once away from home in Northern California. I needed 35mm transparency film on the way via Cheyenne, and all I could find is a few odd rolls on Kodachrome and that was at a K-Mart, forget about anything larger!
I'm not sure if your right for a hand-search of film has been abridged as has keeping your "junk" grope-free by Big Sis, but check on TSA's website to see if the right to have your film hand-inspected is still a right. If that right is there, print it out, especially the rule numbers and web url, take it with you and give your self an extra 30-45 minutes before your flight and with a smile as you get into line, ask them to kindly hand-inspect your film. Courtesy will get you far and if there are any hassles, kindly ask to speak with a supervisor and present them with your TSA print-out. It can't hurt.
Even flying before 9/11 domestically, I didn't have a problem with a single-pass of 100-400 speed film each direction and I'll bet that the machines are even lower emission today. Anything beyond 400 iso, I'd get hand-fondled ;-).
Otherwise, if you are staying at a lodging when you get there, ship the film there. Another thing to try is to check for the chamber of commerce at your destination and see if they will accept your package for pick-up and when you arrive and if you are there during their open hours, pick it up.
You'll need to do this yourself since I don't even think that B&H will trans-ship to a hotel/motel any more, though if you have them ship it to you, it may be worth a call.