North-South Battle for Seattle Fliers

The fierce competition between Seattle’s Alaska and Atlanta’s Delta airlines is spilling over to the Port of Seattle, and it may reach your wallet in the form of higher airfares.

The Port commission, which manages Seattle-Tacoma International Airport, must decide whether to build a new international arrivals terminal at the south end of the airport or expand the north satellite to accommodate additional domestic flights. At this point, there isn’t the money to fund both.

The commission puts the international terminal as its top priority, but there’s a problem – the price keeps ratcheting up. I...