I recently booked a flight on Hawaiian Airlines. Last I remember, DL was somehow affiliated with them. But now thats not the case. Were they ever afiliated with Delta, and if so why did they lose their "link"?
I don't believe they have ever been affiliated but at PDX, DL does have the ground handling contract for them so that is why their ticket counter is meshed with Delta's. I assume they may do the same at some other stations.