Asthma Inhalers
Metered-dose inhalers are exempt from the 100ml limit but should be declared if metallic.
Asthma inhalers and spacers are allowed in cabin, exempt from the 100ml limit. Keep them accessible, carry a spare canister, and declare larger nebulizer liquids with a prescription.
Key highlights
- Check canister levels; replace if less than 30% remaining.
- Pack a spare inhaler and spacer in a labelled pouch.
- Carry prescription or asthma action plan if using steroid inhalers requiring documentation.
Respiratory attacks need immediate relief, so airlines treat inhalers as essential medical devices. Keep at least one inhaler on your person—seat pocket or jacket—not buried in an overhead bin.
Metered-dose inhalers (MDIs) are pressurised; security may swab them but rarely confiscates. Nebulizers with liquid medicines need a doctor letter because they carry more than 100ml of solution.
Cabin humidity is low and can trigger symptoms. Drink water regularly, avoid heavy perfumes, and notify crew if you anticipate needing a nebulizer plug point (available only on limited aircraft).
When allowed vs. when not
✅ When it's allowed
- •Label inhalers with your name to avoid mix-ups on shared trips.
- •Pack antihistamines if multiple triggers (dust, pet dander) affect you.
- •Warm the inhaler with your hands if the cabin is extremely cold; propellant works better.
🚫 Exceptions / conditions
- •Don’t pack inhalers in checked baggage—bags can be delayed.
- •Don’t share inhalers with other passengers; dosage differs per person.
- •Avoid exposing canisters to direct heat sources like galley ovens.
In-flight routine
- ✔Keep inhaler within arm’s reach for take-off and landing.
- ✔Inform cabin crew before using a nebulizer so they can assist with power needs.
- ✔Hydrate frequently; dry air aggravates airways.
Respiratory gear guide
| Item | Cabin status | Notes |
|---|---|---|
| Metered-dose inhaler | ✅ | Exempt from liquid limit |
| Spacer/chamber | ✅ | Declare if metallic |
| Nebulizer liquid | ✅ With prescription | Allow extra screening |
Frequently asked questions
Can I keep the inhaler in my pocket through the metal detector?+
Do dry-powder inhalers follow the same rules?+
Will cabin crew help if I have an attack?+
Travel tips
- ✈️Use saline nasal spray (under 100ml) to keep airways moist.
- ✈️Choose seats away from galley fumes if strong smells trigger symptoms.
- ✈️Download airline special assistance forms if you need priority boarding to settle asthma gear.
Related guides
Official references
DGCA guidelines — simplified
Verified on: 6 Dec 2025
Disclaimer: Aviation and security rules change frequently. Always confirm with your airline, airport help desk, or CISF officers before you travel.