Originally Posted by windowontheAside

As far as I'm aware you can ask about an airport upgrade promotion on any kind of ticket.

If you're on the 106 it looks like there's plenty of availability across the board, so your chances seem decent.

Given they're selling at least 9 seats in every class except A & F, it makes you wonder why they haven't released a few UuA seats. Ah well, such are the mysteries of revenue management!