Economy Comfort is not a separate fare class on KL metal and believe Plats should be able to get it for free (it's discounted for lower status levels). However, if you book a KL-coded, DL-operated flight, you will not be eligible for C+ upgrade until day of departure due to it being a separate fare class on DL metal and upgrade processor will not upgrade a DL Medallion on a KL coded, DL flight (there is no DL SU upgrade class equivalent for KL coded flights).
Last edited by xliioper; Dec 28, 2023 at 2:00 pm