Originally Posted by
SkyMilesTeam
Hi everyone, wanted to clear up any confusion surrounding Delta One suite upgrades. Diamond Medallion Members can use one Global Upgrade Certificate to upgrade directly to a Delta One suite from any cabin of service offered on the flight – including Main Cabin (excluding Basic Economy).
How could DL go any other way at this? I would still rather fly 744 UD than the new 350 D1 suites.