The EU baseline
The 100ml container rule, plus a single 1-litre clear bag per passenger. Bag must come out of hand luggage for screening.
Where the rules are easing
Amsterdam Schiphol (some lanes), Rome Fiumicino (some lanes), Milan Linate, Frankfurt (rolling), Zurich (in progress).
Where the rules are strict
Paris CDG, Madrid, Barcelona, Athens, most regional Spanish/Greek/Italian airports.