Children's strollers and child safety seats are not counted as part of the standard baggage and therefore can be easily checked for free. For your convenience, these items may be checked at the curbside, the ticket counter or at the gate.

On almost all major airlines in 2026, taking a booster seat or car seat is free of charge. Most carriers, including Delta, United, and American, allow you to check one stroller and one child safety seat (like a booster) for free, and these items do not count toward your standard baggage allowance. You can choose to check the booster seat at the ticket counter or "gate-check" it just before you board the plane. If you have purchased a separate seat for your child and the booster seat is FAA-approved for aircraft use, you may even be able to use it during the flight. However, most backless booster seats are not approved for use during taxi, takeoff, or landing because they require a shoulder belt, which most plane seats lack. Even if you don't plan to use it on the plane, checking it is free, ensuring you have it ready for your rental car or taxi upon arrival. Always verify with your specific airline, as ultra-low-cost carriers occasionally have more specific size restrictions for gate-checked items.