飛行機にCar Seatを持ち込める？
Yes — you can bring car seat on a plane in your carry-on luggage. On-board use: aircraft-approved label required (FMVSS / CMVSS).
- · On-board use: aircraft-approved label required (FMVSS / CMVSS)
- · Checks free on virtually all airlines
- · Booster seats can’t be used during taxi/takeoff/landing
On this page · 6 sections
航空保安当局別の公式規定
Rules by security authority
United States — TSA
Carry-on
Yes
Yes — child car seats pass screening; using it on board needs an aircraft-approved restraint and a booked seat.
Checked bag
Yes
Yes — checked free on nearly every carrier, gate or counter, alongside strollers.
Flying internationally? Security follows the country you depart from — the authority above applies at your departure airport. Customs at arrival is separate.
航空会社別の追加ルール
Free to check on all US/CA majors in addition to your baggage allowance — lap-infant policies differ for using it in-flight (you must buy the seat).
Car Seatのパッキング注意点
機内持ち込み手荷物: Yes — child car seats pass screening; using it on board needs an aircraft-approved restraint and a booked seat.
受託手荷物（預け荷物）: Yes — checked free on nearly every carrier, gate or counter, alongside strollers.
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 a Car Seat in a carry-on?
Yes — child car seats pass screening; using it on board needs an aircraft-approved restraint and a booked seat.
Can you pack a Car Seat in checked luggage?
Yes — checked free on nearly every carrier, gate or counter, alongside strollers.
Can I bring a car seat on a plane?
Yes — screened free through security, checked free on virtually every airline, and usable in-flight if it carries the aircraft-approval sticker and the child has a seat.
Does a car seat count as checked baggage?
No — car seats and strollers check free on all major US and Canadian carriers, outside your normal allowance.
Can my baby sit in the car seat during the flight?
Only if it’s an aircraft-approved model, fits the seat, and you purchased a seat for the child — ask the airline for the approval criteria.
Do airlines have their own rules for a car seat?
Free to check on all US/CA majors in addition to your baggage allowance — lap-infant policies differ for using it in-flight (you must buy the seat).
Last verified:
Verified against official sources. Rules change — for high-stakes items, confirm with your airline and the screening authority. Our verification method →