So SEA is Delta's worst performing hub.

Given that Delta is rolling in money these days, being the worst performing hub does not translate to bleeding money.

It could well be that the hub is profitable, but less so than its Delta peers.

As noted, Delta is playing the long game. Gates at Seattle are hard to come by, and unlikely to return if ever given up.

The PNW is on a great growth trajectory, at least as long as a Cascadia earthquake does not occur.

David