| Cheap Flights: Austin to/from Liberia, Costa Rica $297 [November] r/t â Southwest Southwest has round-trip flights from Austin (AUS) to Liberia, Costa Rica (LIR) for $297 with a connection. Flights in November. Origin/Destination reversible. You should take advantage of the 2x points promotion that Southwest is having. Register on Southwestâs home page. 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. Click for more details and booking links Cheap Flights: Austin to/from Liberia, Costa Rica $297 [November] r/t â Southwest . | 