Hey there,

I wanted to share this data point, and hope I don't curse myself out of what I think might be a "free" E+ upgrade

As title says, i'm a Silver on US, and recently booked a one-way K fare on UA from DEN-LGA (pmUA 752) on the US site (because of 2x miles for using the US CC).

When I went to select my seats, I got back an error saying "because this flight is operated by another airline, you won't be able to select seats until 3 days from departure." No big deal, I went back to my reservations page to see if I got a UA PNR so I can choose my seat on the UA site. When I go and look at my reservation on the US site, it shows that I'm assigned seat 9C, which is a E+ seat. Thinking this was a glitch, I did a dummy booking for the same flight on the UA site, and it shows 9C as occupied, and that it is indeed an E+ seat.

So, is this a SHARES error in my favor? Or do you think that this could be "taken away" at a later date, maybe at check-in? I'm thinking I should just leave this alone and chalk it up to good luck, although I'm concerned that if I don't do anything, i'll end up in an middle seat in the back of the bus come check-in time.

Thoughts?