Medical

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)

Carry-on
With limits
Checked bag
With limits

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.

⚠️ Airline rules vary and change frequently. This page summarises common guidance — always confirm with your specific airline before flying, especially for international travel.
⚡ Check airline-specific rules