Navigating the airline industry can be daunting whether you’re a frequent flyer or not. Check the TSA website, linked here, for an up-to-date list of what is allowed and not allowed on flights:
http://www.tsa.gov/travelers/airtravel/prohibited/permitted-prohibited-items.shtm
http://www.tsa.gov/travelers/airtravel/prohibited/permitted-prohibited-items.shtm