Yes, you can check a car seat (Child Restraint System) on Southwest Airlines free of charge, and it does not count toward your standard checked baggage limit. This policy applies to all ticketed customers traveling with a child. You have three main options for checking the seat: you can do it at the curbside (where available), at the ticket counter, or directly at the boarding gate. Gate-checking is often preferred by parents because it allows you to use the car seat to transport the child through the airport, though you will have to claim the item at the baggage claim area upon arrival rather than at the jet bridge (unless you specifically request otherwise for connecting flights). If you have purchased a separate seat for your infant and want to use the car seat during the flight, it must be FAA-approved and have a visible label stating its certification for aircraft use. Southwest also allows you to check one stroller for free in addition to the car seat, ensuring that parents can bring the essential gear they need without incurring the usual "extra bag" fees.