Strollers & Child Restraint Seats Children’s strollers and seat restraints are not counted as part of the standard baggage and therefore can easily be checked for free. For your convenience these items may be checked at curbside, the ticket counter, or at the gate. Child restraint seats may be brought on board the plane in certain circumstances. For instance, if there is an open passenger seat in your row, you may place your child in an FAA-approved child restraint in that seat during take-off and landing. If an empty passenger seat is not available for your child restraint, the item must be checked at the gate by a Delta representative.