In the U.S., TSA regulations permit you to bring your medications (in pill or solid form) through airport security as long as they are screened. It is recommended that buprenorphine/naloxone (Suboxone) and other medications be clearly labeled to facilitate the screening process and that they include your name on the prescription bottle. Check with state laws regarding prescription medication labels. You are responsible for displaying, handling, and repacking the medications when screening is required.
International regulations vary, as each country has its own guidelines about which medicines are legal. The Centers for Disease Control (CDC) warns that medicines that are commonly prescribed or available over the counter in the United States could be considered unlicensed or controlled substances in other countries. Therefore, you should check with the foreign embassy of the country you will be visiting or passing through to make sure your medicines are permitted in that country. See this FDA video for more information.