Originally Posted by
quanh79
PHL – ORD (scheduled to arrive at 12:41pm) – 54 minutes layover
ORD – NRT (scheduled to depart at 1:35pm, and arrive at 4:40pm +1 day) 1hr 20 mins layover
NRT – SGN (scheduled to depart at 6:00pm)
54 minutes is plenty of time for an AA to AA domestic connection at ORD if your incoming flight is on time. 2265 and 153 will probably both be in the H/K wing of T3.
Personally, I would only check my bag if it was heavy enough to slow me down in case I had a delay and needed to run. If there is a delay of any kind you are obviously taking a risk.