Originally Posted by McFlyPHL
Next week I'm flying UA (AA doesn't go into MOD, and I'm not such a fan of driving) and will have a 2 hour layover on the outbound and a 5 hour layover on the return in SFO.
Is it possible to access the AC without going outside of security?
No, although they are both in T-3, I'm afraid AA and UA have separate security entrances and there is no connection that I know of between the gate areas.