Originally Posted by
dc333
Oh, but they do fly NRT-ICN! NW anyway. I have a feeling it's the current odd DL.com behavior making it not show up. The flight may not be daily, year round, or cheap, but it does operate. Today, for example it operated as NW95, but that number changes seasonally it looks like.
A quick dummy booking on nwa.com for 11/11-11/18 has sea-nrt-icn-nrt-sea all on NW metal at $860 all-in.
Ah ha! So the website hates me! I get it. LOL
I bet that if I had done it through nwa.com, I would have found it as well.

That's what I get for choosing to go the difficult route.