There have been numerous Seahawks sightings on Alaska flights during the off season, and even during the season. That tells me that when the Seahawks spend their own money they generally prefer Alaska. For a variety of reasons, not solely financial, Delta makes a pretty hard to beat offer to the teams. They also transported the New England Patriots, as they do many of the football teams. The flew the Colts back to Indy last week and the Packers flew Delta back to Green Bay as well. Delta seems to have a side business transporting sports teams - something they seemed to continue from Northwest.