Need some JS info help...
I have a trip that ends in SJD Mexico, and DH back to base several hours later. I want to Deviate DH on the back end, and fly direct to my home city. USAir flies the route, and it would save me 7 or 8 hours.

Can I do this, and how? What hoops are involved for customs etc., what paperwork do I need in place? USAir doesn't usually have a "pre-listing", you just walk up and fill out papers at the desk, I kind of think I'd need this listed before?

Junglebus probably does this every day... Anyone? Thx