AS -> BA @ SFO: Do I have to exit & re-clear security?
Title pretty much says it all -- I'm scheduled to arrive at the AS domestic gates and connect to BA on to LHR. UA has a shuttle from their terminal to international that allows you to not have to exit and re-clear security... Is there anything like that at the AS terminal? And if not, can I walk from AS to UA and take UA's bus -- or is it just easier to exit and re-clear?
Thanks in advance for any info