Quick rules for flying with insulin in carry-on and checked baggage. Verdicts and conditions across the major aviation regions below.
Insulin, syringes, and lancets allowed in carry-on when accompanied by the medication. Notify TSA agent at screening.
Carry-on only (never check — temperature damage). Bring prescription / doctor's letter, declare at security. Needles + sharps permitted with insulin. Cold packs / gel packs allowed (declare).
Carry-on only. Bring prescription, declare at security. Needles permitted with insulin. Cold packs OK with declaration.
Carry-on only. Prescription required. Needles permitted with insulin. Cold packs OK with declaration.
Allowed in carry-on (do NOT check — temperature damage). Bring prescription / doctor's letter; declare at security. Sharps containers + needles permitted with insulin. Cold-chain bag with gel packs allowed (declare). No regional restriction.
Carry-on only (never check — temperature). Bring prescription, declare at security. Needles + sharps permitted with insulin. Cold packs / gel packs allowed.