Okay, previous to Delta I was a corporate pilot. Actually, chief pilot. They absolutely asked me about my attendance and it was a funny conversation. Somewhere I mentioned the job was 6 days a week unless you flew on Sunday then it was 7. Unless we flew I was at the office 9am-5pm and then work from home after the wife went to bed. It was a big plane, big hangar, lots of vendors, lots of demand and a lot of work. My phone usually rang at 9-10am on Saturday to review the numbers and that was more of a pop quiz than anything. And although I didn't mention this in the interview, a sick call on a charter trip only cost the boss around $50-$80K, so get well fast. I had perfect attendance for all of it, I even missed an earlier interview and had to reschedule because the boss wanted to use the plane for a pointless short trip.

So the interviewer was laughing when he said, "so, who do I asked about your attendance record?" Me. "So, how was your attendance?" GREAT. They laughed.

But note, they asked but did not ask about my previous airline job.

There was was a rumor there were some Comair (might be wrong but definitely DCI pilots) who were interviewing at Delta and had called in sick to make the interview. I don't want to screw up how the story goes but the gist was they weren't hired because Delta figured out that day they'd called in sick to be there. Don't quote me, it might not even be true, just a rumor.

Key is to be very very honest about it. That's all I know.