COPA has round-trip flights from Austin (AUS) to San Jose, Costa Rica (SJO) for $313 with a connection. Flights July to August. Extended weekends available. Origin/Destination reversible.
A personal item and a carry-on bag with a 22-lbs weight limit is allowed without additional fee. Checked bags have a fee. You can avoid seat selection fee by accepting the randomly assigned seat.
Click for more details and booking links Cheap Flights: Austin to/from San Jose, Costa Rica $313 r/t [July-August] – COPA