Southwest are celebrating 39 years with fares starting at $39 one-way. Offer Information * Purchase by June 24, 2010, 11:59 pm Pacific Time. * Travel September 8 through November 17, 2010. * Travel valid every day except Fridays & Sundays. * Fares do not include federal excise tax of $3.70 per takeoff and landing, airport-assessed […]