Originally Posted by
freezingflyboy
I've seen it offered at check-in for an additional fee. Upgraded the wife on a paid ticket once for $79 at check-in. Listing as a non-rev when you hold a paid ticket is a definite no no. IMO, not worth pressing to test for a sandwich, a few drinks and a wider seat.
It’d be for an international leg JFK-ATH that’s the only reason I’d like to try for it. I wouldn’t even bother for a domestic leg.
I don’t think that last minute upgrade applies up international long haul flights, but not sure.
Definitely don’t want to do anything shady here.