Never try to bring a bottle of wine with you in a carry-on bag! Some travelers will make this mistake, thinking that being able to keep the wine with them will protect it from being handled roughly. Unfortunately, the TSA doesn't allow for liquid containers of more than 3.4 ounces to be packed in a carry-on bag per the TSA 3-1-1 rules. If you attempt this, you could even end up being asked by a TSA agent to discard your wine before boarding. Avoid this misunderstanding and hassle altogether by always packing bottles of wine in your checked baggage.