The Brief Southwest Airlines officially launched non-stop service from Long Beach Airport (LGB) to Seattle (SEA) and Portland (PDX) on Tuesday. Flights on both new Pacific Northwest routes will operate six days a week. The additions are part of Southwest's broader Southern California expansion, which includes expanded services in Burbank and San Diego. Southwest Airlines launched two new non-stop routes connecting Southern California to the Pacific Northwest. What we know:Beginning Tuesday, travelers can now fly non-stop from Long Beach to both Seattle-Tacoma International Airport (SEA) and Portland International Airport (PDX) six days a week.