Adhering to airline and aviation authority regulations (like TSA in the US or similar bodies globally) is critical for traveling with electronic cigarettes. Understanding carry-on limitations is essential.
Battery Rules Are Paramount
All electronic cigarette devices and spare batteries must be carried in your carry-on luggage. Lithium-ion batteries pose a fire risk and are strictly prohibited in checked baggage by regulations like the FAA’s.

- Protect Batteries: Place devices in a case or sleeve to prevent accidental activation and short circuits. Remove batteries from devices if possible.
- Carry Spares Safely: Individually protect spare batteries in their original packaging or a dedicated battery case. Cover terminals with electrical tape or use manufacturer-provided caps. Never carry loose batteries.
E-Liquids Follow Standard Liquid Rules
E-liquids fall under the Transportation Security Administration (TSA) liquids rule:
- Container Size: Individual bottles must hold 100ml (3.4 ounces) or less.
- Packaging: All liquids must fit into a single, clear, quart-sized, resealable plastic bag. Each passenger is typically allowed one such bag.
- Accessibility: Place this liquids bag in an easily accessible part of your carry-on for separate screening.
Important: Some jurisdictions may have specific restrictions on e-liquid flavors or nicotine strengths. Know your destination’s laws.
Device Considerations
- Tank Emptying: Air pressure changes during flight can cause tanks to leak. Empty your tank(s) before traveling.
- Separate Components: Disassembling your device (removing batteries, tanks, drip tips) simplifies inspection and protects components. Keep all parts together securely.
- Quantity Limits: Airlines and authorities may impose limits on the total number of battery-powered devices allowed in carry-on bags. Check specific airline policies.
Final Preparation
- Check Airline Policy: Consult your airline’s website for their specific electronic cigarette and lithium battery policies. Rules can vary slightly.
- Know Local Laws: Research the regulations regarding electronic cigarettes and e-liquids in your destination country and any connecting stops. Some locations have severe restrictions or bans.
- Declare if Asked: Be prepared to inform security officers you have an electronic cigarette in your carry-on bag during screening.