| Nonstop Flights: Austin or San Antonio to/from Phoenix $158-$177 [July-October] r/t â Southwest Due to the covid-19 pandemic, we do not recommend booking travel with departures between May and June. This fare has departures later in the year. Southwest has round-trip flights from San Antonio or Austin (SAT/AUS) to Phoenix (PHX) for $158, NONSTOP. $79-$89 each-way. Flights July to October. Origin/Destination reversible. Weekends available. Before you commit, always compare the prices of the individual Flights and Hotel with other booking sites like Tripadvisor or Expedia. Southwest doesnât charge a change-fee so if you already booked this flight but paid more, you should be able to re-book at the lower price and get the difference paid back to you in the form of a travel-voucher. Want a notification sent straight to your phone when any new deals are found? Join our Telegram channel and never miss another deal. Patreon supporters receive a recap of all the airfare deals currently available from Austin and San Antonio everyday. We donât charge a subscription fee. Our deal notifications are available for FREE via Instagram, Facebook, Twitter, Telegram, our Webpage, and our E-mail list. If you are paying someone a subscription fee for this content, you are being ripped off. Read More Nonstop Flights: Austin or San Antonio to/from Phoenix $158-$177 [July-October] r/t â Southwest . | 