| Cheap Flights: Austin or San Antonio to/from Belize $264-$273 r/t [November-December] â Southwest Southwest has round-trip flights from Austin or San Antonio (AUS/SAT) to Belize (BZE) for $264-$273, with a connection. $98-$171 each-way. Mostly weekdays. Flights November to December. Origin/Destination reversible. Click for more details and booking links Cheap Flights: Austin or San Antonio to/from Belize $264-$273 r/t [November-December] â Southwest . | 
