Originally Posted by
flyerCO
Be careful when buying at GoGo before flight. They sell passes that are good only either one airline or multiple. Purchase one for the wrong airline and you're SOL.
Good point. Assuming you already have flights booked, though, it's just a matter of reading the page and choosing the correct pass.
IIRC, the airline restrictions are pretty clear (and the multi-airline passes are noticeably more expensive).