Originally Posted by
guv1976
If the OP already has his AA boarding pass, couldn't he just go through security at T5, and then take the airside transfer bus from T5 to T3? If it looks like the security lines at T5 are light, that's probably what I would do.
OP could try -- but the security queue at T5 can be daunting owing to a lot of infrequent flyers traveling overseas -- it's where all the low-frequency international carriers dock -- whereas the T3 queue normally zips right along; I've never waited more than a few minutes there. Plus OP would miss the fun train ride