Southwest Airlines: Southwest Corporate Factsheet as Southwest’s fleet is 67% Boeing 737 Southwest Airlines Corporate Fact Sheet over 700 in service today the average passenger airfare costing $154.85 Southwest serves Southwest Airlines Corporate Fact Sheet Southwest serves 100 million customers annually "Southwest/AirTran Top Ten Airports by Departures" Southwest’s utilization numbers Boeing 737s and 717s in its fleet Fact Sheet 40 consecutive years SWA’s Fact Sheet Southwest Airlines Corporate Fact Sheet the average passenger airfare costing $154.85 Southwest Airlines 76.5% of their passenger revenue Southwest 76.5% of their passenger revenue over 700 in service today Southwest serves over 700 in service today "Southwest Airlines Fleet Details and History" the average passenger airfare costing $154.85 budget-friendly image as Southwest’s fleet is 67% 76.5% of their passenger revenue