Originally Posted by
tbeard
So, I tried to use my upgrade certificates or miles for her, but they said it was not available. I thought when I called right after booking the tickets that the pnrs were linked....but I found out this cannot be done if the tickets are purchased separately. At least that is what the phone agent told me. I have now declined my upgrade and will ask at the gate if upgrades are available and if so either upgrade us both or neither. Plenty of seats open still.
You cannot combine PNRs, and in your case you could not put both passengers on the same PNR, but you can definitely link them by calling DL. However, as mentioned above, this doesn't do very much.