Whether you can fly with a full bottle of alcohol depends entirely on where you store it and the alcohol content by volume (ABV). According to TSA and international aviation standards, you cannot bring a full bottle of alcohol (exceeding 3.4 oz) through the security checkpoint in your carry-on luggage due to liquid restrictions. The only exception for carry-ons is alcohol purchased at a duty-free shop after security, provided it is in a Secure Tamper-Evident Bag (STEB). In checked luggage, you can pack an unlimited amount of alcohol that is less than 24% ABV (like most wines and beers). For spirits between 24% and 70% ABV, you are limited to 5 liters per passenger. Anything over 70% ABV (140 proof) is strictly prohibited on planes because it is considered a hazardous, flammable material. Always ensure the bottle is unopened and retail-packaged. If traveling internationally, you must also consider customs limits to avoid paying high duties or having the bottle confiscated upon arrival in your destination country.