🔧 Glue

Super glue and solvent-based adhesives are classified as flammable liquids, so a bottle over 100ml will be confiscated at the checkpoint. Even a bottle at or under 100ml may draw scrutiny because of the flammability concern, and some screeners may still remove it. Water-based glues like PVA school glue are treated as standard liquids and pass through freely at 100ml or less.

The flammability classification for solvent-based and cyanoacrylate (super) glues is consistent across the US, UK, EU, and most other major aviation authorities, making them unsuitable for carry-on in quantities over 100ml. Some authorities may permit very small amounts of cyanoacrylate in carry-on given the tiny volumes typically sold, but checking it is the safest approach everywhere.

Screeners may not be able to distinguish the two by image alone, so any glue in a container larger than 100ml is likely to be pulled for inspection regardless of type. If you're carrying PVA or another water-based glue, being able to show the label quickly can help the screener confirm it's not a flammable product and clear you faster.

Pack any solvent-based or super glue in checked baggage to avoid the flammability concern entirely. If you need water-based craft glue in carry-on, use a travel-size container of 100ml or less and place it in your quart-sized liquids bag alongside your other toiletries.