The visitor's sections in Rice-Eccles Stadium are typically W6, W7 and W8. It looks like StubHub has tickets available in that section.
If you're looking outside of those areas I personally would recommend avoiding N23, N25 & E40. Anywhere in the north endzone is extremely hard core Utah fans and your reception might not be as friendly as Utahns have a reputation for. E40 is the MUSS or the student section. You can likely figure that one out on your own.
To those who are coming thanks for coming out and supporting your team! It's a long way to go.