Whether you can carry a flask depends on the contents of the flask and the location where you intend to carry it.
According to available information, carrying a flask containing alcohol is subject to specific regulations:
- Open Container Laws: Many places in the U.S. have "open container" laws that prohibit carrying alcohol in open containers in public. This includes hip flasks, whether they are carried on your person or in the passenger area of a vehicle.
Therefore, while carrying a flask is generally permissible, carrying a flask containing alcohol in public may not be legal in many jurisdictions.