坐飞机可以带 电吹风/吹风机 吗？（美国TSA/加拿大CATSA标准）

可以随身：插电式有线电器不含锂电池，允许随身携带登机，不受电池安全规则限制。

允许托运：有线电器无锂电池起火风险，可以放入托运行李中正常托运。

Standard carry-on baggage size allowances apply; TSA publishes no individual numerical cap for personal use.

Yes. Major brands such as Dyson Supersonic, Shark HyperAir, Conair must comply with standard security limits based on physical properties rather than brand labels.

Standard toiletries and liquids conforming to the 3-1-1 rule (containers under 3.4 ounces / 100 ml inside a clear quart bag) require no separate declaration. You simply place the bag in a screening bin. Medically necessary liquids exceeding 3.4 ounces must be verbally declared to checkpoint screeners before inspection.

If liquid containers exceeding 3.4 ounces (100 ml) are detected in carry-on baggage without an infant or medical exemption, screeners will not allow them past security. Travelers must surrender the item for destruction, return outside security to place it in checked luggage, or mail it home.