Alaska Airlines will launch daily service between Seattle and Philadelphia on June 11, and between Seattle and Fort Lauderdale on July 16.
With the introduction of Seattle-Fort Lauderdale service, Alaska will discontinue flights to Miami, a city the carrier has served from its Seattle hub since 2002.
"By redirecting our flight to the lower-cost Fort Lauderdale airport, we can serve the same geographic area and continue to offer our customers low fares," said Joe Sprague, Alaska’s vice president of marketing.
Alaska will compete with US Airways on the Seattle-Philadelphia route, and will become the only carrier to fly nonstop to Seattle from Fort Lauderdale.