how long have airlines been around
kgb answers Â» Business & Money Â» Company Details Â» How long has southwest airlines been in business? It's been around for 45 years now. Southwest Airlines was incorporated in Texas and commenced Customer Service on June 18, 1971, with three Boeing 737 aircraft serving three Texas cities â Houston, Dallas, and San Antonio. Their flight schedule starts with six roundtrips DAL-SAT and 12 roundtrips DAL-IAH with $20 one-way fares.