Originally Posted by
Tizzette
Is the car seat part of a stroller system? Even if it turns out there is no extra seat for the baby at check in, you will be able to keep the stroller system with you to the gate.
This. If your carseat is part of a system that fits onto a stroller, or you have a frame for the carseat, then i don't see why you can't take it to the gate. We've never flown Porter, but did this frequently without issue when our children were infants.