Being in a line is so boring . What about when we know about all the restrictions about fluid items in airports ? All of us have been there. Being in line at the Transportation Safety Administration only to hear agents request a "bag check," often because a passenger had more liquid in their carry-on than was permitted (or some sort of other prohibited item). At that time we want to be prepared about how many ounces can you take on a plane carry-on . The process can surely make things take longer, especially on the biggest travel days. It's vital to keep in mind the TSA's restrictions on liquids and comparable items when you prepare for your vacation and decide what to include in your carry-on or checked luggage.