We are arriving on a domestic flight from STL at 2:10 pm and departing for an international flight to Berlin at 7:10 pm, both on Delta (the Berlin flight is codeshared w/Air France but we have been instructed to check-in with Delta). Is there an international connecting-passenger check-in location within T3, or should we exit completely, check-in with everyone else, and re-enter security? Unfortunately we booked our flights on separate occasions and thus can't check in all at once in STL.
international connecting passengers check-in