| Cheap Flights: Austin and San Antonio to Dublin $526-$565 r/t [September-March] â Delta / American / KLM / Air Canada / Lufthansa Delta, American, KLM, Air Canada, Lufthansa and various other airlines have round-trip flights from Austin and San Antonio (AUS, SAT) to Dublin (DUB) for $526-$565 with a connection. Flights September to March. Departures on Monday, Tuesday, Wednesday, and Sunday. Click for more details and booking links Cheap Flights: Austin and San Antonio to Dublin $526-$565 r/t [September-March] â Delta / American / KLM / Air Canada / Lufthansa . | 