Originally Posted by
DCADavis
So a related question:
I had some Skymiles to burn so I booked a DL award ticket on VS metal (T class) to LHR. I'm wondering if I can (pay) upgrade to Premium economy now, or do I have to wait until I get an offer XX days before departure.
Thanks.
I'd expect you'll only be able to do so at the airport on the day of departure.