I'm looking at a $3600 or so fare, ORD-FRA-ORD on AI in first. This is the cheapest by far. LH, Swiss are $13,000+. Even business on UA, LH, AA etc. is around $5,000+. I think these are the new B77W planes with the lie flat first sections.

Why is this so cheap? What am I missing? When something is too good to be true, I usually think it is...

TIA.