Before taking your e-cigarette on board a flight, check with your airline to see what their regulations are surrounding e-cigarettes, refills and e-liquids. Most airlines will allow you to bring your e-cigarette on board as long as it is carried in your hand luggage, but do make sure to double-check!
If you are travelling abroad, you should also make sure you are up to date with local restrictions, as there can be serious penalties for bringing e-cigarettes into certain countries.
You can find information on airline policies on travelling with e-cigarettes here:
Submit a ticket