Southwest’s expansion comes just a week after another low-fare carrier, JetBlue Airways, announced it was temporarily reducing its number of flights out of Pittsburgh and needed customers to fill more seats on flights from here to Boston and New York’s John F. Kennedy International Airport.
Low-fare carriers have had mixed results in the Pittsburgh market. Since 2000, eight have launched service here, but only four remain. The remaining carriers have been able to bring down average fares, though, helping Pittsburgh become the nation’s 13th-cheapest midsize airport.
source: Times online