We are million mile Frequent Flyers on American. From our area Washington/Baltimore, all AA flights to JA go through (MIA) Miami. We pass this way 3-4 times annually to JA. MIA has undergone a dramatic reconstruction over the last couple of years. This is mostly complete, and made a HUGE improvement. AA has most of their flights now in the same concorse. Usually, you will only have a few steps to the gate of your next flight. Good place to get a real Mojito!