PRNewswire-FirstCall -- Southwest Airlines today introduces priority security lane access for its Business Select and Rapid Reward A-List Customers at Seattle-Tacoma International Airport. The airline has already implemented the lanes branded "Fly By" at a number of its 64 airports, including: Baltimore/Washington International, Dallas Love Field, Phoenix Sky Harbor International, Orange County John Wayne, Denver International, San Francisco International, and Los Angeles International. Southwest plans to expand the priority security lane program to additional airports nationwide as needed.