Flying with Vapes and E-Cigs (TSA Regulations)
Carry vapes and e-cigarettes in the cabin or on your person, never in checked baggage. Protect devices from accidental activation and keep spare batteries in carry-on baggage with their terminals protected. Follow the 100 Wh or 2 g battery limit, pack vape liquid within carry-on liquid limits, and do not use or charge devices onboard. Airline rules may be stricter.
Imagine reaching your gate knowing where your vape, batteries, and liquid are packed, and what to do if your bag must be checked. The rules are easier to follow when you separate three things: battery safety, liquid limits, and airline instructions.
TSA screens items at U.S. checkpoints. The FAA sets key rules for carrying hazardous materials on aircraft, and airlines may add limits. I use that distinction to plan: passing screening does not by itself mean an item meets every carriage rule.
Plan Battery, Liquid, and Airline Requirements
Before packing, check the battery rating, the amount of e-liquid, and your airline’s current policy. The main federal rule is 49 CFR § 175.10(a)(18), supported by FAA PackSafe guidance. It requires electronic smoking devices to travel in the cabin or on your person, not in checked baggage.
Start by checking the device or battery label. For a lithium-ion battery, capacity is measured in watt-hours (Wh). If only volts and milliamp-hours (mAh) are shown, you can estimate capacity with this formula: volts × mAh ÷ 1,000. For example, a 3.7-volt, 2,000-mAh battery is 7.4 Wh.
Under the passenger exception in § 175.10(a)(18), a vape device’s battery must not exceed 100 Wh or 2 grams of lithium content, as applicable. If the rating is missing or unclear, check the manufacturer’s information or ask the airline before you travel. Do not guess based on the device’s size.
For spare lithium batteries, the usual passenger limits are up to 100 Wh without airline approval. A spare battery over 100 Wh and up to 160 Wh requires airline approval; no more than two such spares are allowed per person. Protect every spare battery from short circuits. A battery’s terminals must not touch metal objects or other battery terminals.
Vape liquid has a separate rule. In carry-on baggage, each container must hold no more than 100 mL (3.4 fluid ounces), and the containers must fit in your single quart-size clear liquids bag under TSA’s liquids rule. The container’s size matters, not how much liquid remains inside it.
Check airline rules as well, especially if you use a large device or have a connecting flight. Some airlines or destinations may impose tighter restrictions. The FAA and TSA rules do not replace airline policies or the laws of countries you visit.
Check Carry-On Limits and Protect Batteries
The safest setup keeps the device and spare batteries accessible in your cabin bag or on your person. “Spare battery” means a battery not installed in the device. Carry-on placement matters because lithium batteries can pose a fire risk if damaged or short-circuited, and crew need access to a problem in the cabin.
| Item | Where it belongs | Key limit or step |
|---|---|---|
| Vape or e-cigarette device | Carry-on or on your person | Never in checked baggage; protect from accidental activation |
| Spare vape battery | Carry-on only | Protect terminals from contact or short circuit |
| Spare battery over 100 Wh, up to 160 Wh | Carry-on only | Get airline approval; maximum two per person |
| E-liquid in carry-on | Carry-on liquids bag | Each container 100 mL (3.4 oz) or less |
| Device or battery in flight | Stowed in the cabin | Do not use, charge, or recharge |
Before leaving home, switch the device off and use its lock or other manufacturer-approved feature if it has one. Follow the maker’s instructions for preventing accidental activation. A loose device in a pocket or bag can be pressed on by other items, so keep it secured rather than free to move around.
Keep spare batteries in their original packaging when possible. If you do not have it, use a battery case or cover each terminal with a non-conductive material, such as electrical tape. Do not put loose batteries in the same pocket as keys, coins, or other metal objects.
E-liquid can leak. A tightly closed container, kept upright inside a sealed bag, can help contain spills, but it does not change the liquid limit. Follow the device maker’s advice for preparing a tank or pod for travel. Do not assume an empty device can go in checked baggage; the device still contains a battery.
Pack and Present Items for Screening
TSA screening checks carry-on items and may require you to remove or show an item. Keep your vape where you can reach it, and answer screening staff’s questions. Follow instructions at the checkpoint; screening procedures can vary by airport and may change.
Before travel, place your e-liquid containers in the required clear liquids bag if you are carrying them on. The TSA limit is 100 mL per container, with all containers fitting in one quart-size bag. A container larger than the limit does not qualify just because it is partly empty.
At the checkpoint, present your device or batteries if an officer asks. Do not place a vape in checked baggage to make screening easier. If staff need to inspect an item, follow their directions and keep the battery-protection steps in place afterward.
Travel scenario: a full-size e-liquid bottle. A 120 mL bottle does not meet the carry-on container limit, even if it contains only 50 mL. Transfer liquid to a container that holds 100 mL or less, or check the airline and destination rules for other permitted options. TSA’s carry-on liquid rule is separate from battery rules.
Travel scenario: a spare battery without a clear rating. Do not rely on appearance or compare it with a different battery. Look up the manufacturer’s rating before departure. If you cannot confirm it meets the applicable limit, ask your airline how to proceed rather than packing it and hoping it passes.
Verify Gate-Check and In-Flight Compliance
A bag that fits the carry-on rules can still be taken at the gate and placed in the aircraft’s hold. Once checked, it is checked baggage. FAA rules do not allow vape devices or spare lithium batteries in checked baggage, so remove them before handing over the bag.
Keep the vape and all spare batteries with you in the cabin, or on your person, if a gate agent asks to check your bag. If there is no room to keep those items in the cabin, tell the agent before the bag is accepted and ask how to proceed. Do not leave them inside and assume the gate-check exception covers them.
During the flight, do not use or charge a vape, its battery, or the device. FAA rules prohibit using or charging electronic smoking devices onboard. Keep the device stowed and follow crew instructions. Do not connect it to a seat power outlet or charge a spare battery.
Travel scenario: an unexpected gate check. Just before boarding, an agent asks to take your carry-on. Remove the vape and spare batteries first, then keep them in your personal item or another approved cabin space. Check that the personal item stays with you and is not also placed in the hold.
Before each trip, I recommend a final check: the device is off, spare battery terminals are covered, liquids meet the carry-on limit, and the airline permits your battery setup. Recheck this list if your itinerary, airline, or bag assignment changes.
Key takeaway: Keep every vape device and spare battery in the cabin, protect batteries against short circuits, and never use or charge the device onboard.
Frequently Asked Questions
Can I bring a vape on a plane?
Yes. Under FAA rules, carry it on your person or in carry-on baggage. Do not put it in checked baggage.
Can a vape go in checked luggage if it is switched off?
No. Switching it off does not make checked baggage acceptable. Vape devices must stay in the cabin or on your person.
Can I pack spare vape batteries in checked baggage?
No. Spare lithium batteries must be carried in the cabin, with terminals protected against short circuits.
What is the battery limit for a vape?
The passenger exception allows a vape device with a battery of no more than 100 Wh or 2 grams of lithium content, as applicable. Check the battery label or manufacturer’s specifications.
Can I bring a 150 Wh spare battery?
Only if your airline approves it. A spare battery over 100 Wh and up to 160 Wh requires airline approval, and no more than two such spares are allowed per person.
Can I bring vape juice in my carry-on?
Yes. Each container must be 100 mL (3.4 oz) or smaller and fit in your single quart-size clear liquids bag.
Can I bring a larger bottle if it is partly empty?
No. The container must hold 100 mL or less. The amount of liquid left in a larger container does not change its size.
Can I use or charge my vape during the flight?
No. Do not use or charge the device or its batteries onboard. Keep it stowed and follow crew instructions.
What if my carry-on is gate-checked?
Remove the vape and every spare battery before handing the bag over. Keep those items with you in the cabin.
Do airline rules differ from TSA rules?
Yes. TSA handles security screening, while FAA rules govern carriage of hazardous materials. Airlines may set stricter limits, so check your carrier’s policy before traveling.
For current details, consult 49 CFR § 175.10(a)(18), FAA PackSafe guidance on electronic smoking devices and lithium batteries, TSA’s liquids guidance, and your airline’s baggage rules.
(This article was written by one of our staff writers, Steven Langford. Visit our Meet the Team page.)
