EI · Ireland · updated 2026-06-01
Aer Lingus medication liquid rules
Essential liquid medicines are exempt from the 100 ml rule on Aer Lingus flights. You can carry more than 100 ml in hand luggage if you have supporting documentation — usually a prescription or a doctor's letter — and declare it at the security checkpoint.
Send these rules to whoever you're travelling with.
What to know before you pack
- Keep medicines in their original labelled packaging so the name matches your documentation.
- Insulin, inhalers, liquid painkillers, eye drops and gel cold packs used medically all count as essential medicines.
- Split your supply between hand luggage and hold luggage where possible in case of delays or lost bags.
- Baby food, formula and medical liquids are exempt for infants and passengers with medical needs.
Aer Lingus cabin bag at a glance
Personal item: 25 × 33 × 20 cm
Overhead bag: 55 × 40 × 24 cm · 10 kg · paid on some fares
Frequently asked
Do I need a prescription for liquid medicine on Aer Lingus?
For quantities over 100 ml, bring a prescription or doctor's letter. Under 100 ml, medicine can simply go in your clear liquid bag with no paperwork.
Where should medication go on a Aer Lingus flight?
In your cabin bag, within easy reach. Medicines you may need during the flight should never be checked into the hold.
More Aer Lingus liquid topics
Sources
- Aer Lingus cabin baggage — checked 2026-06-01