飛行機にPeanut Butter / Spreadsを持ち込める？
条件付きで可能 — Peanut Butterは航空保安基準の制限内で機内持ち込みが可能です。 Security counts it as a liquid: ≤ 3.4 oz (100 ml) in carry-on.
- · Security counts it as a liquid: ≤ 3.4 oz (100 ml) in carry-on
- · Full-size jars: checked only
- · Sandwiches already made with it: fine — food, not a liquid container
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💧 3-1-1 liquids rule checker
One quart-size (≈1 L) bag per passenger; every container must be 3.4 oz (100 ml) or less.
Fit is approximate — container shape decides real-world packing. Medically necessary liquids and infant food are exempt: declare them.
航空保安当局別の公式規定
Rules by security authority
United States — TSA
機内持込:
条件付き
Yes, but only up to 3.4 oz (100 ml) — TSA classifies peanut butter as a liquid. Full jars get confiscated at the checkpoint.
受託手荷物:
可能
Yes, any size jar is allowed in checked bags.
Flying internationally? Security follows the country you depart from — the authority above applies at your departure airport. Customs at arrival is separate.
Peanut Butter / Spreadsのパッキング注意点
機内持ち込み手荷物: Yes, but only up to 3.4 oz (100 ml) — TSA classifies peanut butter as a liquid. Full jars get confiscated at the checkpoint.
受託手荷物（預け荷物）: Yes, any size jar is allowed in checked bags.
保安検査場での最終的な持ち込み可否判断は、現場の保安検査員に委ねられます。
よくある質問 (FAQ)
Frequently asked questions
Can you bring Peanut Butter in a carry-on?
Yes, but only up to 3.4 oz (100 ml) — TSA classifies peanut butter as a liquid. Full jars get confiscated at the checkpoint.
Can you pack Peanut Butter in checked luggage?
Yes, any size jar is allowed in checked bags.
Does TSA really count peanut butter as a liquid?
Yes — spreadable foods like peanut butter, Nutella, and cream cheese count as liquids, so anything over 3.4 oz must be checked.
Last verified:
Verified against official sources. Rules change — for high-stakes items, confirm with your airline and the screening authority. Our verification method →