Originally Posted by georgetg

The PWA defines SEA as not ever being a hub. In contrast LAX was specifically defined as a hub.

Alaska code on more than 25% of flights to hubs.

DELTA, departures (2010 average)
LAX DOM 53, INTL 3.5
SLC DOM 81, INTL 2.7
SEA DOM 25, INTL 3


ALASKA, departures (2010 average)
LAX DOM 16, INTL 11
SEA DOM 118, INTL 2

Among the Alaska LAX international flying is the Delta Mexico flying that used to be covered by the 73N and is now covered by Alaska.

Alaska also is replacing 7ER flying to the Hawaiian islands from select cities.

Cheers
George