| Nonstop Flights: Austin to/from San Diego $137 r/t [October-February] â Alaska Airlines Alaska Airlines has round-trip flights from Austin (AUS) to San Diego (SAN) for $137, NONSTOP. Flights October to February. Departures on Tuesday, Wednesday, and Saturday. Extended weekends available. Origin/Destination reversible. Change fees are being waived and carry-on bag is allowed for free. You can avoid paying for seat selection by accepting the randomly assigned seat at the gate. 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. Click for more details and booking links Nonstop Flights: Austin to/from San Diego $137 r/t [October-February] â Alaska Airlines . | 