FlyerTalk Forums - View Single Post - Same day change: AS operated codeshare to AA prime?
Old Aug 21, 2015, 8:48 am
  #3  
SeattleDavid
 
Join Date: Jul 2003
Location: Gatwick, UK
Programs: UA *G, BA Silver
Posts: 1,669
I've certainly done something similar switching from an AA-coded, US-operated flight to an AA-coded and operated flight (though this was last year, not recently - and I changed from a 2 segment trip to a non-stop).

I changed it at the Check-in desk as soon as I got to the airport and it took quite a while to do, as the agent had to go and find the US desk in order to get the change processed.

If your changes require them to go and find an AS desk to make the change, that might make it more complicated.

But it sounds like you have plenty of time!
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