Don’t know where you are or where you are flying to/from but I do regular short hauls with no problems. TSA is really good about spotting vaping gear, if you do it right. Actually, they are so good that I ‘ve been playing with trying harder and harder to make the stuff look like a pipe bomb, just to test them, with absolutely no luck.
Batteries go in a protective case in your carry on luggage,
NOT checked.
Liquids go in your liquid bag unless the bottle is over 3.4 ounces, then it must be in your checked baggage. I put juice in a baggie and then in the liquids bags, it’s leaked more than once due to pressure changes in the cabin.
Some people take the tank filled, then again, many have had the tank leak--oodles. Easiest is to empty the tank and refill when you get to your destination. If you take it filled, it goes in the liquid bag through TSA and then keep the tank upside down during the flight.
You really shouldn’t have any problems. If you are flying internationally, ask about the specific country. Some are pretty harsh, most are just fine.
Have a great trip!
Liquids -
Liquids Rule
Vaping stuff -
Prohibited Items