I am trying to book ATL-OGG on Delta One which requires a ATL-HNL leg and then a codeshare connection on Hawaiian Air to OGG.

Before this week I had no trouble finding routing on Delta.com. Usually it would be the same price as just ATL-HNL. I found this routing on numerous dates throughout the year. Now it's completely gone and Delta only shows First Class options with routings through LAX or SEA.

I called an agent and she couldn't get it either, and instead had to force it in as two one ways which made it ridiculously expensive.

Is this some kind of bug or is there something going on with their relationship with Hawaiian Air?