DALLAS, June 18, 2024 /PRNewswire/ -- Southwest Airlines Co. (NYSE: LUV) continues its birthday celebration with a sale on flights starting as low as $53 one-way in honor of the carrier turning 53. Starting today through June 20, 2024, Customers can book these fares for their next getaway for continental U.S. travel between August 6 and December 18, 2024, and Hawaii, international, and San Juan, Puerto Rico travel between August 20 and November 20, 2024. Restrictions, exclusions, and blackout dates apply. S ...