Electronic cigarettes (e-cigarettes, vapes, vape pens) are subject to specific regulations for air travel, primarily due to their lithium batteries and potential fire risk.
Are They Allowed?
Yes, you can bring e-cigarettes on most commercial flights, but with strict rules:

- Carry-On Luggage Only: E-cigarettes must be packed in your carry-on bag or on your person. They are strictly prohibited in checked baggage due to the fire hazard posed by lithium batteries.
- No Use Onboard: Using e-cigarettes or vaping is prohibited throughout the entire flight (including lavatories).
- Airport Restrictions: Vaping is also generally banned inside airport terminals.
How to Pack Them Right
- Secure the Device: Prevent accidental activation. Disassemble if possible (remove tank/pod from battery/mod).
- Protect from Damage/Short Circuits: Place the device and any spare batteries in a protective case or original packaging. Ensure batteries cannot contact metal objects (like coins or keys) or make electrical connections with each other.
- Lithium Battery Limits: Spare batteries must also be in carry-on baggage. Individual loose batteries must be protected against short circuits (placed in original retail packaging, individual battery cases, or insulated with tape over terminals). Batteries exceeding 100 Wh are generally prohibited; those between 100-160 Wh usually require airline approval. Most standard e-cig batteries fall below 100 Wh.
- E-Liquids (Vape Juice): These are considered liquids/gels. Follow the carry-on liquid rules:
- Containers must be 100ml (3.4 ounces) or less per container.
- All containers must fit comfortably in a single, clear, quart-sized, resealable plastic bag.
- One bag per passenger.
- Power Off: Ensure the device is completely powered off (not just locked) before boarding.
Important Considerations
- Check Airline & Destination Rules: Always verify the specific policies of your airline and the regulations at your destination/country of transit. Some countries have very strict laws regarding e-cigarettes.
- Battery Safety is Paramount: Failure to pack batteries safely (leading to short circuits or thermal runaway) poses a significant fire risk. Compliance is critical.
- Disposal: If you need to dispose of an e-cigarette or battery, do not place it in regular trash. Many airports have battery disposal bins.