For a stress-free airport experience, it pays to learn how Delta Carry On Size Liquids are handled at security. Passengers may bring small, travel-size containers that fit together in one clear, resealable bag. The limit is based on container size, not the amount inside, so a half-empty large bottle is still refused. Those who need medications or baby formula may bring larger quantities, provided they declare them to the officer. Everything else that exceeds the limit belongs in checked baggage.
