Can I Fly With This?
Can I bring thermometer on a plane?
Quick rules for flying with thermometer in carry-on and checked baggage. Verdicts and conditions across the major aviation regions below.
🇺🇸 United States (TSA)
Digital and electronic thermometers: allowed in both. MERCURY thermometers: one small one (in protective case) allowed for personal medical use only — never in checked baggage with most airlines.
🇪🇺 European Union (EASA)
Digital + ear / forehead: allowed in both. Mercury thermometers banned in carry-on; one allowed in checked in protective case (Minamata Convention restricts EU-wide; most airlines refuse outright).
🇬🇧 United Kingdom (CAA)
Digital / ear / forehead: both bags. Mercury thermometers heavily restricted; most UK airlines refuse outright.
🌎 Latin America
Digital / ear / forehead: both bags. Mercury thermometers banned in carry-on; most LATAM airlines refuse in checked too.
🌏 Asia (ICAO / IATA baseline)
Digital + ear / forehead thermometers: allowed in both. Mercury thermometers: BANNED in carry-on; one allowed in checked if in protective case (most Asian airlines now refuse outright — mercury banned by Minamata Convention which all Asian countries have signed).
🇦🇺 Australia & Pacific (CASA)
Digital / ear / forehead: allowed in both. Mercury thermometers: banned in carry-on; one in protective case in checked (most Australian airlines refuse outright).