Lisbon airport liquids: 100 ml containers, one 20x20 cm bag and the 150-gram rule for tinned food

Passengers departing from Lisbon Airport can carry liquids in hand luggage only in containers of up to 100 ml (or 100 g) each, packed in a single transparent resealable bag measuring 20 by 20 cm, with one bag per passenger, according to the airport's official guidance. Its rule of thumb is to check in every liquid item over 100 ml.

There are exceptions. Liquid medicines and special dietary products, including baby food such as porridge, fruit jars, yoghurts and milk bottles, may travel outside the bag and in larger quantities; the airport advises carrying a document or medical certificate showing the need, and only the quantity needed for the journey. Tablet or powder medication is not subject to the liquid rules. Tinned food counts as a liquid if its contents are liquid or paste-like, but in Portugal tins with a total net weight of up to 150 grams may go in cabin baggage.

Duty-free liquids bought after security or on board are accepted if they stay sealed in the tamper-evident bag supplied by the shop, together with the receipt, until the final destination. All liquids must be presented separately at screening, and items over the limit can be placed in hold baggage, posted, or discarded.

The airport stresses that rules differ between airports, so an item accepted in Lisbon may be refused at a connection or on the way back. Travellers should check the rules for every airport on their itinerary, as well as with their airline.