Originally Posted by
Adam1222
No.
Though you can consider using an upgrade certificate for your companion.
As noted, if either companion or Medallion is booked on an award on separate reservations, the system is programmed to prohibit companion upgrades.. If both companion and Medallion are on same award reservation, it will process as normal. Here is the relevant text on website. Note the reference to different "paid" ticket reservations for eligibility for companion upgrades --
https://www.delta.com/us/en/skymiles...llion-upgrades
"
If you and your companion are in different paid ticket reservations that have been linked, upgrades to U.S. 50 domestic Delta One, First Class and Delta Comfort+ work a little differently"