How much toothpaste can I fly with?
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If you do bring a full-size tube, it may be confiscated and thrown away. You need to buy some travel size toothpaste which is usually around 1.75 or 1.85 ounces, so you're well within the limit set by the TSA. Keep your tube of toothpaste within the 3.4 ounce size maximum limitation or smaller, and you should be fine.