Heathrow is a smoke-free airport indoors, so smoking and vaping are only allowed in designated outdoor areas before you go through security. Once you're through security and airside, there is nowhere to smoke or vape until you land somewhere else, and connecting passengers have to clear passport control and security again to reach an outdoor area. Checked 2026.
Heathrow's Smoking and Vaping Policy in Plain Terms
Heathrow's official position, confirmed on its own website, is straightforward: "In line with British law on smoking in enclosed public spaces, Heathrow is a smoke-free airport. This includes the smoking of traditional cigarettes and the vaping of E-cigarettes." That rule covers every terminal building, every lounge, and every part of the airport landside once you're indoors.
Smoking and vaping are only permitted in designated areas outside the terminal buildings. Heathrow provides interactive maps at the terminal to help you find your nearest one, since exact locations and signage can shift as terminals are renovated. There's no single fixed spot that applies to all terminals, so it's worth checking the map or asking staff at your specific terminal (T2, T3, T4 or T5) rather than assuming the layout is the same as it was for a previous trip.
Once You're Through Security, That's It
This is the detail that catches people out. Once you've cleared security and entered the departure lounge, you will not be able to smoke or vape anywhere on the premises, even in a quiet corner or near a window. There are no airside smoking rooms at Heathrow. If you need a cigarette or vape after security, your only option is to wait until you land.
Connecting Passengers: Can You Smoke Between Flights?
If you're on a connection through Heathrow, you are not permitted to smoke or vape during the connection process itself. To smoke, you would need to leave the secure zone entirely: go through passport control, out to the designated outdoor smoking area, then back through security control to return to the departure lounge for your next flight. Heathrow explicitly warns that this route exists but requires clearing both passport control and security again, so it eats into your connection time.
Given how long re-clearing security can take at busy periods, this generally isn't worth attempting on a short connection. If your layover is tight, see our guide on whether it's safe to self-connect at Heathrow and check how to transfer between Heathrow's terminals before you plan on stepping outside.
Carrying Vapes and E-Cigarettes Through Heathrow
You can carry e-cigarettes and vape devices in hand luggage, but Heathrow advises checking with your airline first, since individual carriers set their own rules about what's allowed on board (most restrict spare batteries and require vapes to be carried, not packed in hold luggage). It's worth checking your airline's dangerous goods policy before you fly rather than assuming Heathrow's rules are the whole story.
It's also worth knowing that disposable, single-use vapes have been banned from sale and supply in England since 1 June 2025, under government regulations aimed at reducing vape waste. That doesn't stop you bringing a disposable vape you already own into the airport, but you won't be able to buy a replacement one in the shops if it runs out or breaks, since retailers can no longer legally sell them. Reusable and refillable vapes are unaffected and remain widely available airside.
Practical Tips If You Smoke or Vape
- Check the smoking area map for your specific terminal before you queue for security, so you're not searching for one at the last minute.
- If you're an early arrival with time to spare, smoke or vape before security rather than trying to plan a mid-wait exit and return.
- Nicotine gum, lozenges or patches are a practical backup for a long flight or a tight connection where stepping outside isn't realistic.
- Remember the outdoor areas are landside, so once you leave you'll need to go back through security screening, the same as arriving fresh.
Frequently Asked Questions
Can you smoke inside Heathrow Airport?
No. Heathrow is smoke-free indoors by law, and this includes vaping. Smoking and vaping are only allowed in designated outdoor areas before security.
Can you vape after going through security at Heathrow?
No. Once you're airside, past security, there is nowhere to smoke or vape until you land. There are no airside smoking rooms.
Can connecting passengers smoke between flights at Heathrow?
Only by leaving the secure zone entirely, through passport control, then re-clearing security to get back to the departure lounge. This takes time, so check your connection window first.
Are disposable vapes banned at Heathrow?
Disposable, single-use vapes have been banned from sale in England since June 2025, so shops at Heathrow won't sell them, though you can still travel with one you already own.
Where exactly are the smoking areas at each terminal?
Heathrow provides interactive terminal maps showing current smoking area locations, since exact spots can change with terminal works. Check the map or ask staff at your terminal on arrival.
Do I need to check my e-cigarette with my airline before flying?
Yes. Heathrow advises confirming with your airline that vapes and any spare batteries are allowed in your hand luggage, since rules vary between carriers.