Quick rules for flying with mouthwash in carry-on and checked baggage. Verdicts and conditions across the major aviation regions below.
🇺🇸 United States (TSA)
Carry-on
With limits
Checked bag
Yes
Counts as a liquid. 100 ml in carry-on, full size in checked.
🇪🇺 European Union (EASA)
Carry-on
With limits
Checked bag
Yes
≤ 100 ml in carry-on; any size in checked. No regional restriction.
🇬🇧 United Kingdom (CAA)
Carry-on
With limits
Checked bag
Yes
≤ 100 ml in carry-on; any size in checked.
🌎 Latin America
Carry-on
With limits
Checked bag
Yes
≤ 100 ml in carry-on; any size in checked.
🌏 Asia (ICAO / IATA baseline)
Carry-on
With limits
Checked bag
Yes
Liquid: ≤ 100 ml in carry-on liquids bag; any size in checked. Some Muslim-majority destinations (Saudi Arabia, Iran, Brunei) restrict alcohol-containing mouthwash — switch to alcohol-free formulas.
🇦🇺 Australia & Pacific (CASA)
Carry-on
With limits
Checked bag
Yes
≤ 100 ml in carry-on; any size in checked. No regional restriction.
Also known as: listerine
⚠️ Airline rules vary and change frequently. This page summarises common guidance — always confirm with your specific airline before flying, especially for international travel.