checking baby car seat?

[traveljunkie2]

Make sure to check your particular airline, but carseats and strollers are generally not included in your luggage count and you do not have to pay to check them.

From Delta's website (Special Baggage: Infant cand Children's Items):

Strollers & Child Restraint Seats
Strollers and child restraint seats will be checked for free and are not counted as part of the standard baggage allowance.

Strollers and child restraint seats may be checked at curbside, the ticket counter, or at the gate.

If you want to use a child restraint seat or stroller to transport your child through the airport, that's fine. Strollers need to be checked at the gate by a Delta agent. Child restraint seats may be checked, or in certain cases, they may be brought on board:

Open Seat on Your Row
If there's 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. However, Delta can't guarantee that a seat will remain open. If you want to be sure a seat will be available, you'll have to purchase a ticket. If an empty passenger seat is not available for your child restraint, the child restraint will have to be checked at the gate by a Delta agent.