If you use a Montana driver's license for identification when you fly, be sure to check if it is a REAL-ID compliant license.
Current, unexpired Montana drivers’ licenses or IDs will be accepted by the Transportation Security Administration to board domestic, commercial flights and access federal facilities until October 1, 2020. Beginning October 1, 2020, a REAL ID-compliant driver's license, an enhanced driver's license, or another acceptable form of ID will be required to fly within the United States.
For more information on Montana driver licenses or identification cards, visit the Montana DOJ Motor Vehicle website. For more information on Montana and REAL ID, visit MTREALID.
MT REAL ID Commercial
MT REAL ID Checklist
TSA - REAL ID