Can You Bring a Vape on a Plane?

Vapes in Carry-On Bags

Vapes in carry-on bags are allowed by TSA, and federal rules also let you carry one on your person. The FAA puts vape pens, disposables, mods and e-cigarettes under the same rule: keep them with you in the cabin.

You also have to keep the heating element from switching on by accident. Turn the device off or lock it if it has that setting, and pack it where nothing can press the button.

Why Vapes Can't Go in Checked Bags

Vapes can't go in checked bags because a vape's heating element can switch on in a suitcase and get hot enough to ignite what's around it. In the cabin, the flight crew can step in quickly. That was the Transportation Department's reasoning when it banned vapes from checked baggage in a rule that took effect June 20, 2016.

Fires came first. In August 2014, an e-cigarette in a checked bag burned in a plane's cargo hold at Boston Logan and forced an evacuation, and in January 2015 an overheated e-cigarette set a checked bag on fire at Los Angeles International, as the interim rule of October 2015 describes.

Vape Batteries and Chargers on a Plane

Vape batteries and chargers on a plane have their own rules, and the main one is that spare batteries and power banks can't go in checked bags. The federal rule for vapes says spare batteries ride on your person or in your carry-on, each protected from short circuits: in the original retail package, with tape over the exposed terminals, or in its own plastic bag or pouch.

Every lithium-ion vape battery, installed or spare, is capped at 100 watt-hours. The larger 101 to 160 watt-hour batteries that airlines can approve, up to two spares per person, are for laptops, power banks and other electronics, not vapes.

Power banks are carry-on only under the FAA's battery rules. On international flights, rules ICAO approved on March 27, 2026 also cap them at two per traveler and ban recharging them on board.

E-Liquid on a Plane

E-liquid on a plane falls under TSA's liquids rule, so each bottle in your carry-on can hold no more than 3.4 ounces (100 milliliters). TSA's e-liquids entry sets that limit, the liquids rule puts all your small containers in one quart-sized bag, and bigger bottles can go in a checked bag.

The FAA says vape liquid can fall under separate rules and suggests asking your airline about it based on your destination.

Using a Vape on a Plane

Using a vape on a plane is banned on every scheduled US airline flight and on foreign airline flights to and from the US. A Transportation Department rule in force since April 4, 2016 counts e-cigarettes as smoking whether or not they're tobacco products, along with similar products that make vapor or aerosol. The ban covers every part of the plane, including the lavatory, where tampering with the smoke detector is a separate violation. The FAA calls vaping on a plane a federal offense, and Congress added e-cigarettes to the federal smoking law in 2018.

Inside terminals, airport rules apply. At Denver International Airport, smoking and vaping aren't allowed anywhere inside, and the outdoor smoking areas are all before security.

THC and CBD Vapes on a Plane

THC and CBD vapes on a plane follow the same battery rules as any vape, but their contents raise a separate legal question. TSA says its officers don't search for illegal drugs but refer any illegal substance they find to law enforcement. Its April 27, 2026 update to that page marks medical marijuana "Yes (Special Instructions)," but TSA told AFAR its policy had not changed.

Marijuana is still a controlled substance under federal law. Since April 28, 2026, FDA-approved marijuana drugs and marijuana from state-licensed medical programs are in Schedule III, and other marijuana stays in Schedule I. A DEA hearing on moving the rest began June 29, 2026, with no final decision as of October 3, 2026.

Hemp-derived CBD with no more than 0.3 percent delta-9 THC by dry weight is legal hemp under federal law today. From December 11, 2026, a finished hemp product, vape cartridges included, stops counting as hemp if it holds more than 0.4 milligrams of total THC per container. Anything over that line is treated as marijuana (Congressional Research Service). Products with cannabinoids the plant can't make lose hemp status sooner, on November 12, 2026. Those dates come from Public Law 119-37, as delayed by Public Law 119-103.

Vapes on International Flights

Vapes on international flights follow the same packing rules as domestic flights, according to the FAA. The bigger risk is the law where you land.

In April 2026, Hong Kong's Department of Health said more than 30 jurisdictions ban e-cigarettes. Hong Kong itself has barred travelers from bringing them in since April 30, 2022, and since April 30, 2026 having e-liquid or pods in public carries a HK$3,000 fixed penalty. Singapore fines people for having or using vapes and penalizes travelers who bring them in. Thailand has banned e-cigarettes since 2014, and its tourism authority tells visitors to leave the devices and the liquid at home. Check your destination's rules before you pack.

Vapes on a Plane FAQ

This vapes on a plane FAQ answers the questions travelers ask most.