Routes: Look at Aer Lingus, American to China, Southwest at SJC, Frontier, Spirit, more

In airline route news, Aer Lingus gets a new look; American puts its code onto a number of China Southern routes, including two from San Francisco; AA also plans some extra flights for spring events, and schedules the first route assignments for a new aircraft type; Southwest adds a San Jose route; Frontier will give United some competition on a route out of San Francisco; Spirit adds several markets out of Raleigh-Durham; Norwegian rolls out in-flight Wi-Fi; TAP expands a U.S. route and TAME ends one.