EI · Ireland · updated 2026-06-01
Aer Lingus baby milk & formula rules
Baby milk, formula, expressed breast milk, sterilised water and baby food are exempt from the 100 ml rule on Aer Lingus flights. You can carry a reasonable amount for the journey — security may ask you to open or taste-test containers, and they do not have to fit in the clear bag.
Send these rules to whoever you're travelling with.
What to know before you pack
- Bring the milk in individual bottles or cartons rather than one large container so screening is faster.
- Frozen breast milk is often refused in the cabin — it must be liquid enough to be screened. Check it into the hold if it is solid.
- Ice packs and cool bags are usually allowed when carrying baby milk, but may be tested separately.
- 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
How much baby milk can I take on Aer Lingus?
Enough for the flight plus delays. There is no fixed millilitre limit for baby milk, but security officers can question quantities well beyond the journey length.
Does the baby need to be travelling with me on Aer Lingus?
For baby milk exemptions in the UK and most of the EU, yes — the infant should be travelling. Expressed breast milk is the usual exception and can be carried without the baby.
More Aer Lingus liquid topics
Sources
- Aer Lingus cabin baggage — checked 2026-06-01