Generally, a disposable vape is roughly the same amount as 20 cigarettes, so if you’re a heavy smoker you may want to take one for each day that you’re away for. Many airlines allow for 15-20 disposable vapes to be taken onboard with you but you must check beforehand with the airline.
Vaping devices, including disposable e-cigarettes, must be kept in your hand luggage at all times at the airport and after boarding. Because they contain lithium-ion batteries, they can be a fire risk and must be kept in your hand luggage. This also means that you can’t put them in your checked baggage (large suitcase). This is strictly forbidden and must be observed.
