Sea-Tac Airport’s second-largest carrier, Delta Air Lines, is once again offering new competition for the airport’s largest carrier, Alaska Airlines.
The Atlanta-based Delta says it plans to launch new nonstop services to 10 destinations from Sea-Tac, all of which are now served by Alaska Airlines from Sea-Tac.
Delta said it plans to begin four daily flights connecting Sea-Tac with Orange County, Calif. as well as offering new service to Pasco, Billings and Missoula, Montana, Orlando, Boston, and Edmonton, Alberta.
Since Delta began expanding both its domestic and international network from Sea-Tac more than two years ago, it has nearly duplicated Alaska’s route structure from the airport, competing with the SeaTac-based carrier on most of its most popular routes including those to Juneau and Anchorage in Alaska and to resort destinations such as Puerto Vallarta, Los Cabos and Cancun in Mexico.
Delta now operates about 100 departures on peak days from Sea-Tac, with planned departures increasing to 140 daily by next year.
Delta began its Sea-Tac expansion by offering new departures from Sea-Tac to foreign destinations such as Tokyo, Seoul, Hong Kong, Beijing, Shanghai, London, Paris and Amsterdam. It initially depended on code-share flights with Alaska to provide domestic connections.
The Atlanta airline began building its own web of domestic destinations from Sea-Tac two years ago, challenging Alaska on many routes.
Alaska has responded by enlarging its own route map from Seattle to serve such new destinations as Tampa, New Orleans, Raleigh, Charleston, Nashville, Milwaukee and Oklahoma City.