Originally Posted by
drchrysler
As a data point, Delta does have their code on the KL KUL flights to/from AMS flights (DL8210 and DL8212) and I've seen open Z inventory on them quite a few times when I have looked at flights on this route in the past.
They also have their code on the KL SIN and BKK flights however those ones are usually cost prohibitive (~$6k+ for Y from JFK)
Last time I looked (year ago) they hadn't or had no fares that worked with the DL coded number. Would be happy if they do now. (Or a cheap Z fare)